14 Posts
11 Followers
121 Likes
Aeronaut Kalle
Hi yβall. I was lucky enough to sell a few kits I decided not to build, I got them over the past couple of years doing trades with my local club members. This allowed me to buy a few things for myself for Christmas without touching the family budget, and we could splurge a bit more on family and friends. Of course, thereβs no surprise, but then again its easier on my wifeβ¦she jumped thru hoops one year to get me a PAW diesel when I was still flying. She said it was an βadventureβ..
Anyway, once everything was said and done I had an Aeronaut Kalle under the tree. I resisted the temptation to look at the kit before Christmas morning, and told myself Iβd start on it later in the new year. Yep, 3 days after Christmas I had her on the bench. Iβm an addictβ¦
The Kalle is a nice kit. Thereβs some decent fittings, the wood is good, the hull, deck, part of the superstructure and deck are molded well from abs. It really and truly looks like a beginners kit, but thereβs more to meet the eye with the Kalle.
First thing I did was to cut the superstructure and bulwarks away from the molding. They are molded as one u it, and Aeronaut has very specific instructions on this procedure so the builder doesnβt cut off what looks like scrap. I rough trimmed the plastic parts for the time being.
The next step was to laminate and glue up the keelβ¦and this is where I start to deviate from the instructions. You see, this kit is an original Kalle, which has been superseded by the Kalle II. The plans on my kit show a captured rudder, where the KalleII has a removable shoe. I decided to mod my keel to the later variant. I made that decision AFTER gluing the keel to the hull. It would have been easier to effect this change if the keel want glued on, but I have a Dremelβ¦..I turned out better than I had hoped. With the shoe cut out I built up the rudder and did a kind of hybrid install between my kit and the new variant. I also countersunk the screw holes I drilled for the shoe attach screws. Once I had everything jigged up I went ahead and installed the rudder tube. The rudder is wood, I think Iβm going to glass it for a better, sturdier finish.
I then turned my attention to the tube and motor mount. This is where it get interesting, the plans show a box frame installed in the hull, and a geared brushed motor bolted down to a lower plate. The newer kit includes a bulkhead mount for mounting either a brushed motor or brushless outrunner. The wood parts in my kit included that mount. Thereβs no mention of this part in either th instructions or plans, and in the call out illustration that part is not shown in the frame sheetβ¦but itβs there. So..I went that route.
The motor Iβm using is the same one I used in my Taucher, a Zippkits 650KV 36 mm outrunner. This is a good motor, pleanty of power without the usual higher RPM one usually sees in motors this size.I built up the frame with the bulkhead mount, and used the motor to jig up the stuffing box. Once I was satisfied with the alignment I epoxied everything down, then built a servo mount on the side of the frame for the rudder servo. The receiver and esc will be Velcro mounted to opposite sides. I then uninstalled the electronics so I could give the wood parts a coat of waterproof finish.
Thatβs where Iβm at now, next go-around Iβll reinstall my electrics then start the deck install, then I have to plank the deck.
Cash
Cashrc
23 days ago
10 Posts
12 Followers
61 Likes
Graupner Taucher Wulfβ¦.again!!!
Hi yβall. A few years ago I built a Graupner Taucher Wulf from their βEasy Build Upβ kit. If any of yβall followed the build youβll note that A: I was in over my head at that time and B: I was not happy with the results. It ran well, but I did not have the experience to finish it right, and the horrid instructions didnβt help. That was my 2nd attempt at scale boat modeling, the first was a Krick Felix, which turned out nicely. Now, several years laterβ¦I traded for another, NIB Graupner Wulf. I want another shot at it!
Knowing now the pitfalls of this kit, and the experience Iβve had building over the past 4 years, have led me to take the instructions as loose guidelines. The cabin gave me the most trouble, so I started with that.
I took my time building the main structure. Itβs supposed to fold together then glued, in reality the fold lines are very fragile. I took my time, sanded to fit and it came out better. Iβm using my Tamiya paints and primer, and Iβm pleased so far with the results. Iβve added a working radar, but instead of using a mini servo to drive the antenna, I decided to go with an old Robbe geared motor that was designed to be used for special functions, and an Apex rc switch. This allows me to turn the radar on and off from the transmitter, and the geared motor drives it at a nice scale speed. Now, the Tauchers radar is mounted on a tube. To make this work I had to cut the antenna off the resin fitting, drill it down the centerline, and install a brass tube. The motor is mounted low in the center of the cabin, and a brass rod goes up thru the tube to which the antenna is fitted. I used a piece of Sullivan pushrod as a coupler from the rod to the motor. Works like a champ!! I also set the cabin up with working nav lights.
The pictures I have now show the radar with a slightly too long radar antenna, I shortened the side aerial to clear it, but I trimmed the radar today to clear and fitted a longer aerial as per the plans. Iβll have pics of that when Iβm done making up and fitting the railings.
Cash
https://youtu.be/OqyfUg08T1U
Cashrc
4 months ago
11 Posts
10 Followers
40 Likes
Deans Marine Kristina
Hi yβall. I decided to get to work on a kit I received last Christmas, a Deans Marine herring drifter. This will be the second Deans kit Iβve built, the first being the PBR from a much older kit.
First things first. Many people tend to badmouth the Deans line, but this kit is markedly improved from the PBR I built a couple of years ago. The hull is gel coated fiberglass, the plans are readable and in color. The instructions while not great, are much improved from what Iβve seen before. Most of the plastic sheet parts are machine or laser cut. The fittings are..okay. Andβ¦.it comes with a picture dvd that show a lot of details not in the written instructions. What I donβt like, I wonβt use. The prop supplied is a rough casting, Iβm using a Graupner prop and Iβll set the kit prop to practice on later. Itβs designed for a five pole brushed 385 and 5 nimh cellsβ¦.who uses 5 cell packs these days? I. Using a 1000 kv 28 mm outrunner and a 2 cell lipo for power. From my calculations Iβll be a little overpowered, but not much. Some of the fittings Iβll use, some I wonβt.
Anyway, itβs a pretty straightforward kit. Iβll just go over a few things for now. After the hull gets cleaned up and the edges sanded, the next step is to sand the inside, as itβs a little rough. I sanded the upper side where the bulwarks rise above the deck. Once the rudder tube and stuffing box is in place, you glue the deck onβ¦.and build a stand. I had some thickish basswood I wanted to use up, so I built the stand from that, and glued hardwood strip across the grain for strength. The deck is another place I veered away from the instructions. The kit uses layered 2mm thick plastic strip for the deck supports, I used 1/4 triangle balsa stock for all but the aft end, there I used 2mm plastic rod. The rod bends around the stern curve easily, and once glued in place and blended with the triangle stock the deck set down nicely. The mas supports were made up on the bottom of the deck then the assembly was epoxied in place. The aft edge of the deck is just a bit shy of the hull, the instructions call for filler, I used filled epoxy. After that itβs time for the bulwark rail and supports.
Thatβs where Iβm at as of now. I have to have a cornea transplant in my left eye (Fuchβs Dystrophy) but the consultation isnβt till late September, so my goal is to have her ready by then, before the surgery. Iβll do more this week and post the progress.
Cash
Cashrc
6 months ago
10 Posts
6 Followers
50 Likes
Graupner Elke/Kriegsfischkutter
Hi yβall. After my last couple of builds I was looking for something interesting and different to add to my fleet. My buddy Fred (BLKFT1) and I both like unusual subjects. We discussed the Russian monitor Popov, a Siebel Ferrry, and several odd working boats. I looked up the Siebel Ferry, and in my research came across a boat class, the Kriegsfischkutter. This was a class of fishing boats that were converted and built from the keel up as patrol boats for the Kreigsmarin in WWII. This hull had good seakeeping qualities, and many of the boats that survived were sold back to be used as fishing boats. I think some survive to this day. Apparently this was a fairly common practice, the Royal Navy used a trawler hull known as the Admiralty Trawler which was used for minesweeping and ASW duties. The US tended to use specially built warships, but early in WWII we used tuna boats as picket, patrol and errand boats, the venerable Tuna Fleet.
I was about to convert a Graupner Krabbe Ton kit, but the Elke came up for sale on RCGroups, and since itβs the same hull the Germans used for the Fischkutter, I bought it and prepared to get started.
Before I go on, let me add that this is an OLD kit, looking at the radio install plans dates it from the late 60s to the early 70s. I know Iβm modifying a bona file unbuilt kit, but in my defense the kit wasnβt perfect, so my conscience is somewhat clear
Anyway, the first thing I had to do was trim the hull, and then I had to cut a slot at the stern where the stuffing box and aft support keels slid into.I tacked everything in place, then I made up my motor mount/bulkhead and once everything lined up to my expectations I epoxied everything down solid. I then turned my attention to the rudder. I was going to use a Robbe non scale rudder for ease of building, but the Robbe unit has some of the leading edge of the rudder ahead of the rudder shaft, while the stock rudder rotates right at the leading edge. Since the prop is captured between the keel pieces top and bottom, I would have had to really carve up the Robbe unit to make it work. I decided to use the kit rudder.
The rudder is assembled from 2 abs halves, trimmed, sanded and glued together. The rudder shaft and tiller arm were missing from the kit, so I had to do it my way. I filled the insides of both rudder halves with sheet balsa. Once sanded to a good fit I made up a 3 mm shaft with a 45ish degree bend at one end. I then cut a slot to fit the shaft into the rudder halves. The bend will guarantee that, if for some reason my glue joints fail, the rudder will not just rotate about the shaft. Once done I jigged up and bonded the rudder tube in place, and added the tiller.
The motor Iβm using is an old AYK 480 mated to a planetary 3/1 gearbox, which on 2 lipos or a 6 cell nimh should give adequate power and a good run time.
Iβm building the deck now, it sits nicely in a molded in slot in the hull which alleviates the need for a separate bulwarks. However, I need to cut the bulwark down just aft of the cabin down flush with the deck so I can have a place to mount the depth charges. I am also trying to decide whether to purchase the guns or make my own.
Thatβs where Iβm at now. Some of the kit superstructure will be used, but I have to scratch build the gun decks, depth charges and such. This is going to be fun!!
Cash
Cashrc
9 months ago
1 Post
4 Followers
8 Likes
Italeri Vosper RC conversion.
Hi yβall. Iβve been off the board for a few weeks. My daughter, Grace, came down with Covid, sheβs fine, just felt rough for a few days. However, itβs company policy that if a family member comes down with Covid, the employee has to be away from work for 5 days, then take a test. If negative, back to work. So, I tested negative, back to work on Monday..Tuesday, my coworker had it, we lost him for a week. Iβve been a bit busyβ¦
Anyway, I couldnβt leave the house for a few days as it was possible that I had Covid, which means I couldnβt go out and get the ballast and tubes I need for the Grimmershorn. So I decided to build something else for the time beingβ¦an Italeri Vosper!!
Now, I have been wanting to do an RC conversion on an Italeri 1/35 scale kit for some time, but they arenβt cheap, and I donβt have a lot of experience with plastic models. Built a few as a kid, then found balsa and tissue and that was that. Butβ¦Amazon had the Vosper on sale for less than 100 dollars, and then a coupon for 20 percent off THAT!! Plus, I had the stock in my parts bin to fit it out, so I ordered it as part of my Christmas gifts and told my wife. She was quite pleased that I got something I liked and it was on sale! Yay!
I wonβt bore yβall with too many details, the Italeri kit is nice and builds well. If I do another static conversion I have to learn to cut Styrene cleaner. I had a time cutting a hatch, used a frame, with a thin, fine cutoff wheel but I still melted the edges, which meant I had to clean up the edges and also use filer strips to get the hatch to look and fit properly. Thereβs a build log from about 6 years ago where a member built one up, I folles his log, but I put my hatch further aft, omitted the water calling and used a higher kv motor and a 2 cell lipo vs a 3 cell. Itβs single shaft, I had a 3mm shaft and tube from a kit where I had used a 4mm in its place, a small, older Graupner rudder, and a metal motor mount bonded to the hull. The hull is one piece save the transom, I used 1/8th reinforcements and plenty of epoxy at the joints..donβt wanna lose that
I made one glaring error, I cut the stuffing tube slot too far aft, so I applied a scab patch of plasticard inside, heated up a scrap plastic spruce with a heat gun, stuffed that in the slot, sandis it down and filled it.
I think itβs going to be a nice boat, I did a test run with the portholes taped up and the deck screwed down but not bonded. At high speed she can be a bit squirrelly, and I got a bit of water in the hull. Second run I used full throttle only in a straight line, limited maneuvers to 3/4 throttle, she handles well and much less water inside.
Iβm almost done, I have about 2-3 hours of painting and installation of a few more details, sheβll maiden this Sunday. After that, itβs time to ballast the Grimmershorn.
Cash
https://youtu.be/IHCb0Op30dw
Cashrc
1 year ago
6 Posts
6 Followers
29 Likes
Graupner SAR Hertha Jeep
This is the second time Iβve built a Graupner Hertha Jeep. I built one a few years ago, and after a few runs converted it to brushless. She was my βgo-toβ boat for almost 2 years until an altercation between her and JPs Kitty II caused the loss of her superstructure. Well, JP had a brand new SAR kit in the box, untouched. We made a trade that involved, among other things, my Acapulco plus my old SAR boat for his kit and a couple of other items..it also involved me building a new, scratch built simplified superstructure for the old SAR. Iβve got that done, and am now in the process of building my new Hertha Jeep.
Now, Iβm not going to do a step by step on this boat, as I covered a lot of that in the last build. I will, however, detail what Iβm doing different because of what I learned from the last build. My old boat was built pretty box stock, with the exception of a hotter wind 400 sized long can motor. Unfortunately, if you drove the boat at full chat for a bit that motor would get pretty warm, and the stock motor was worse, so I swapped in a 1450 kv 28 mm outrunner. That motor on 6 cells gave the boat a good turn of speed, and never got much over ambient temperatureβ¦the boat was a reliable as anything Iβd built after that. However, the radio tray/motor mount was designed for a can motor and strap down mount, and with all that in the way made it very difficult to install an outrunner..,.sooooβ¦..
The first thing I did was to check the bottom keel for straightness. In my first boat the keel was tweaked near the aft edge, I had to cut out the offending piece and reglue it in place, with subsequent filling and sanding. The new keel was tweaked, not as dramatically as the first but more subtly, but the bend was longer. I had to cut, break, tweak and fill this one too. This, except for the instructions, was the only real flaw I found in the kit.
I decided to forgo most of the radio tray except for a couple of bottom former halves, I used those to make a base for my rudder servo mount. I also made up a bulkhead mount for the outrunner. Once everything was epoxied in, I did a test run. I got my alignment about spot on as this setup is much quieter than my old boat.
I did the cabin a little different too. The cabin pieces have βfoldβ lines molded in so you can crease the part and make it fit properly, like the front cabin windscreen. Now, the first time I built this boat I had a heck of a time getting the front screen assembled properly, and had to use a lot of filler. This time around I just changed up the assembly sequence and things went much better.
Thatβs where Iβm at now, the cabin is mostly assembled and the rudder tube and propulsion parts are in place.I need to build the aft well deck and start getting ready for primer and paint.
Cash
Cashrc
1 year ago
5 Posts
5 Followers
26 Likes
Robbe/Krick Paula IV
Hi yβall. If you remember I built a Robbe Paula III from an original Robbe kit last year as my βfurloughβ project. I ran it one time, was quite happy with the way she looked and handled. Then, as luck would have it my buddy Larry came over with an armload of kits and accessories and made me an offer I couldnβt refuse. Anyway, my buddy Fred had an unbuilt Paula IV in his stash, so I traded him my Billings Samson II for the Paula, some older brushed motors and a set of plans for a βkneelerβ hydro. I was having issues with the windows in my Grimmershorn, so I put her aside to finish later and started on the Paula.
Now, the new Paula is a Krick/Robbe kit. There are several changes to the kit. Firstly the crane, if used and winch are setup different than the system in the Paula III, which I incorporated into my III with some success. The cabin of the IV is built up of machine cut plastic sheet, the windows are precut and framed. The original Paula used a tinted molded upper and lower cabin, the upper was then masked with the included masking and painted, leaving the windows clear once unmasked. The accessories and fittings are of good quality, but maybe just a little off compared to the original Robbe parts. Donβt think the hull is plura, standard, ( but well made and molded) abs.
I decided early on that I was NOT fitting the crane, nor would I use the standard 600 brushed motor. Instead, I opted for a 1700 kv brushless outrunner. I am adding lights, a working radar and another surprise that I will discuss later. I did the radar same as I did my first Paula, using a continuous rotation servo in an enlarged radar housing. This works a treat!!
Itβs a fairly simple boat, I basically did the shaft, rudder and motor mount work in the hull, added the deck then started on the cabin. Iβm doing paint now, once thatβs complete itβs on to details and electronics.
Cash
Cashrc
2 years ago
20 Posts
16 Followers
136 Likes
Krick Grimmershorn
Hi yβall. I thought it about time that I started on my 60th birthday present, a Krick Grimmershorn. This will be the largest boat, both in size and displacement Iβve built to date. I plan to add a MrRcSound sound board, lights, and radar...maybe another function too.
I started on her last week, so far I have the keel, stuffing box and rudder made up. The keel is built up from several pieces of ply, and it sandwiches the stuffing tube. I had to trim it and almost took too much off, but in the end it came out okay, although I had a gap on either side of the tube. I filled that with epoxy and balsa. The rudder is also made up of a ply sandwich then carved and sanded to shape.
Iβm using an old 3.8 to 1 planetary gearbox for the drive. I should be okay for power, and itβs a real smooth box, very quiet. I tacked the motor mount in and then adjusted the alignment using a 4mm Iβd brass tube. I added braces to the mount, and built a little seat for the motor to support weight being that the motor mount is ply. The seat just contacts the bottom of the motor. I then installed the radio plate and assembled and epoxied the deck in place. Thatβs where Iβm at now, hopefully Iβll have the bulwarks installed, and everything from the bulwarks down sanded smoothed and painted by this weekend.
Cashrc
1 year ago
17 Posts
15 Followers
111 Likes
Dumas Higgins PT boat
Hi yβall. Iβve decided to go ahead and start on my Christmas present, a Dumas Higgins PT boat. This kit has an abs hull, a plastic deck, vac formed cabin, and numerous wood and metal fittings. Like most Dumas kits it does NOT come with running gear, nor shaft tube or rudder. However, I have those things in my βstockβ, plus Iβve decided on a 1700 kv 36mm o.d outrunner. Iβve used this particular size and power motor on several other boats of roughly the same size, so it should serve me well here.
The hull needs to be trimmed, then the deck is assembled and installed. The deck is in 2 halves, split right down the middle. I glued it together, then added the reinforcements. The hull βdroopsβ a few degrees from level around 1/3 baxk from, and to the bow, and the deck follows that. The reinforcements have that designed in, and when they are glued to the deck it builds that curve right in, and once trimmed, it fits almost perfectly. The deck was bonded to the hull with medium ca, and what little gaps I had were filled with ca and then top filled with putty.
I used a rudder assembly and stuffing box from Cornwall models. The rudder is from Radioactive, the stuffing tube a Caldercraft Fineline unit. I used the kits pine rudder support block and drilled it for the rudder tube, once I had it all sorted out I installed the rudder tube and block, run the nut down on the tube till just snug, and once I had it all lined up I snugged the nut another quarter turn and epoxied it all in place.
I cut the slot for the tube just a wee bit oversized, but no problem there. I used the kits skew to get the angle right, tacked it in place, checked alignment then caβd it all in place. I then made a scab plate to help cover the slot inside, and epoxied the plate and tube.
I made a bulkhead motor mount from scrap plastic sheet. I put the coupling on the shaft, and βpaintedβ the motor end with a red marker, and used that to mark my center on the bulkhead. I then drilled that out, and used that to line up my motor mount holes. I went ahead and installed the motor, added a reinforcement to the bulkhead, and tacked it in place to check my alignment with the shaft. Once I was satisfied I caβd it in place then coated the joints with filled epoxy. It lined up true, and when I test ran the motor it was very quiet, no vibrations nor binding. I also built up the hatch, and added the chine strakes.
Next up is a final sanding of the hull, then Iβll start building the above deck details and cabin.
Cash
Cashrc
2 years ago
13 Posts
12 Followers
85 Likes
Wedico Christina...or not
Hi yβall. I like to keep my bench busy, and Iβm pretty well done with the Mini Jupiter, so I felt like doing one more somewhat simple boat before I start on a βwinter projectβ. I have a couple of kits that I have bought or traded for that fit the bill, but I kept coming back to a fairly rare kit by Wedico-the Christina. The Christina is a..well letβs be frank, sheβs ugly..at least to me. Her lines are all wrong, sheβs powered by a stock 280 type motor, has a 2mm unthreaded shaft with a push on or glue on prop. I think the reason sheβs rare is that the kit wasnβt a big seller. Now, the hull has decent lines, and the bottom of the hull looks a lot like the contours of the Robbe Paula III I built, and the deck fits pretty good already, before trimming. Thats most of what Iβm going to use from the box. The manual states for more performance the builder can use a 540 class motor and a suitable shaft and tube. Well..I got those. The rudder is too small, the hardware is..meh, so thereβs that. Anyway, a few week ago I was looking at the hull, and thought that this might make a good pilot/RAF rescue/USCG/whatever boat...so thatβs what Iβve been doing the past 2 days. At first I was building up the cabin and superstructure to look somewhat like a USCG utility boat, but then I moved the bridge forward, and she looks like a rescue boat, maybe a caricature of an older RAF rescue boat or police boat, so thatβs where the bridge is now. I had to make filler pieces to allow the bridge to set on the upper deck properly because of the angle I had originally built in, but it works. Itβs built of 3/32 and 1/16 sheet balsa. I think I made the windows too big, and I have to figure out some sort of control panel, but Iβm on my way. Weβll see where she goes..
Cashrc
2 years ago
9 Posts
13 Followers
58 Likes
KNK Mini Jupiter M401
Well, my bench has been clear for a couple of weeks. I did some tidying up, then thought about what my next project should be. I did a trade with my buddy Larry, came out with a few kits and some fittings and such. One of the kits is a little all wood boat named the Mini Jupiter from KNK models out of Japan. From the looks of the box, and the young lady modelling the boats on the back of the box, Iβd say this kit is from the early eighties. A quick web search shows the kit being listed from a website in Japan, Iβm worndering if theyβre re-kitting it. No other mention of the kit except for the odd older build log, one guy says his kit dated from the late seventies.
KNK mad 3 or 4 different sizes of this boat, this one, at around 17 inches long, is the smallest. It sits right between my Graupner SAR and my little Deans Pibber in length. I intend to run a 28mm outrunner of around 1300-1500 kv and a 2 cell lipo for power.
So far, Iβm building it pretty stock, with a few exceptions. The stuffing box and shaft will be replaced, as the shaft is simply a piece of what looks to be 2.3 or 2.5 mm wire, and the prop is glued on. Iβm using a Fineline 4mm shaft and tube, which is coming in my semi monthly care packet from Cornwall.
The kit is pretty straightforward, you builds up a keel, add bulkheads, stringers, and supports then sheet it.the bottom sheeting gets a little tough near the bow, due to the pinched(?) bow then as you go further aft the bottom flattens out to a shallow v. On mistake Iβve made so far is I glued the front chine support in upside down, had to cut the glue joints and fix it, but I got it handled. The bottom of the hull is planked with 3 narrow thin plywood sheets that overlap each other, giving the hull bottom strakes all the way aft. The side sheeting is one piece of the same thin plywood.
Iβm almost ready for the decking, before I do that I need to trim the excess sheeting at the gunwale, then Iβm going to paint the inside with some epoxy finishing resin befor I sheet the deck. What you see in the pics is about 7 hours of work.
Cash
Cashrc
2 years ago
10 Posts
11 Followers
59 Likes
Graupner Tina Rowboat build log
Hi yβall. I thought I would start an actual build log on the Graupner Tina. I did the gunwales, added some supports for the floor and assembled the floor today. The gunwales are made up of extruded plastic channel that is cut to size, then a pieces of balsa stock is glued in place. This assembly slips over the edge of the hull with the thicker part of the gunwale inboard. This is not as easy as it sounds, as the hull is made of a plastic that seems to be part abs, part styrene. Itβs pretty tough, but the hull is flimsy in tortion until bracing is installed, and the gunwales help it keep its shape. Slow and easy is the word. Once I had the gunwales made up I tacked them in place, and when I made sure the hull wasnβt twisted I ran thin ca on the mating surfaces. The transom gunwale was a bit of a pain, but I got her in. Needed a spot of filler on the diagonal joints at stem and stern, but it looks the part.
I then added the floor supports and built up the floor, which is made up of 4 parts of die cut ply, doubled up for strength. I sanded a bevel to almost kind of match the hull sides angle, and did a test fit. Needs a touch of the sanding block in a couple of spots but sheβll fit.
Thatβs all I did this morning, will try to get some more done this week and Iβll post it here.
Cashrc
3 years ago
7 Posts
12 Followers
62 Likes
Deans Marine PBR
Hi yβall. Donβt know how many of you kept up with the βNight Watchβ thread last year, but those of you who did know that the Texas Navy had its hands full...shoot, we lost our admittedly woefully obsolete flagship, the San Jacinto, and the heroic actions of my second in command, LT J.G. Errol T Cat (feline division). You may also know that we gained a new flagship in the form of a Robbe PT15, which is still undergoing sea trials before her final acceptance inspection. What you did not know is that Errol has been chomping at the bit for his own command. He wanted the PT, but I said no, youβre a cat!!! A few weeks later, someone made a purchase on my EBay account and the Deans Marine kit ended up on my doorstep several days later. Think I need to change my password...
All kidding aside, I had been wanting another fast warship in my fleet, and since the PBR is a smallish boat, it will fit in my car and on the shelf nicely. Also, since I have a partially started Deans Wacht am Rhein kit in my stash, I figured this smaller and supposedly less complicated kit would help me get used to the way the Deans kits go together....I mean, how hard can it be?
I wonβt bore you with step by step details, Iβll just go over a few things I changed and some interesting building points. Now, this is an older PBR kit, apparently theyβve updated the instruction manual and possibly a few other things. This kit has a decently molded abs hull, cast fittings, full size plan and printed sheet plastic parts. Some people donβt like anything thatβs not pre cut, but the printed parts donβt bother me at all, as Iβve built model planes from print wood kits. Only 2 things made me a little uncomfortable. The manual is..well, a little hard to read. Thereβs pictures, but they are a little grainy, and some of the building sequences seem to jump around, or in one case was duplicated on 2 pages several pages apart. The other thing was the white metal rudder. Not a fan. Weβll get to that in a bit.
The sequence of assembly is pretty straightforward once you figure it out. Cut trim the hull, add reinforcement strips to the upper inside, then add the stuffing box, rudder, well deck, battery hatch and radio hatch. Due to the way the decks are stepped, you end up with 3 different hatches-one to access battery, and two to access the radio and motor. Only problem I ran into that wasnβt of my own making was that the starboard aft of the hull, just before the stern, had a very thin spot, which started to crack. I just added a scab patch inside and continued on. Also, I changed up the motor mount as I am using a brushless outrunner for power. That also necessitated shortening the shaft and stuffing box.
The rudder I used came from an Aquacraft Reef Racer that I had scrounged some parts from. The shaft was a bit too big, and the rudder is molded around it. I bend the original shaft so I could get the leverage I needed to work it free of the rudder without damage, I then installed a brass shaft that I nicked and inserted, then finished off with thin ca. It worked a treat!! I made some mods to accept the thicker tubing and shaft, and installed it.
So far so good. Although itβs not the easiest kit to figure out, once you get the aft well deck installed things seem to fall in place, and the construction goes fairly quickly from there, Iβm at the point where my next steps are the hatches and superstructure.
Cash
Cashrc
3 years ago
5 Posts
5 Followers
31 Likes
Robbe Paula III with an upgrade or two...
Hi yβall. Well..shoot. Still stuck in the house. PT15 is ready for re-maiden, Iβve done some motor changes to the SAR and the Dolly..whatβs left to do. Oh, letβs build another boat!!!
I like to trade. Love it, itβs fun, and Iβll trade what Iβm not using or going to build either up or down for something I really want. Thatβs how I got the PT15. In with that trade came a just started Robbe Paula III. I decided to build her. Now, the newest version of this boat is the Paula IV, which has a much simpler system for the boom and winch. The original uses a small geared motor for the winch, actuated by a relay or reversing switch, and uses a micro switch to cut power when the boom reaches a predetermined position. The boom uses a spring loaded βhydraulic ramβ to extend the boom, and on the other side a servo actuated 3 position locking arm. To bring the boom back to stowed position you unlock the boom and reel it in with the winch. The Paula IV uses an under deck servo driving a large double ended lever which is connected to the boom, and a sail winch servo for the winch. Guess which system Iβm using?
Only problem is I didnβt have the parts for the lever and I donβt have a sail winch servo..so I made them. I defeated the stops in a standard servo gear train and glued the pot in neutral, and used 3 servo discs to make a pulley. The boom lever was another matter. Robbe uses what looks like a rudder tiller like the ones in their kits, or the Caldercraft units. On arm is cut off and it uses the brass insert as a bearing. I made one out of stacks of scrap Plura, used an 1/8th i.d wheel collar for the bearing. The hole for the bearing was drilled slightly undersized, the the collar was drove home in a vise and caβd into place for good measure. I made a mounting plate out of plura and a piece of 1/8th piano wire and I had my lever!!! Woo-hoo!
I installed an 8.4 volt Speed 600, mounted the rudder and tube, made a support for the tube out of hard balsa,got all my under deck work done and bonded the deck and hull together with Stabilit. Hull paint is done. The Paula comes with a radar unit, I decided to do the same thing with and old micro servo that I did for the winch, made the radar housing a little taller and now I have a working radar that runs direct from a receiver channel. Itβs mast mounted, and the mast is aluminum, so I made a slot whereby I could run the wires down. Itβs painted now. Next thing on my list is the cabin.
Cash
Cashrc
3 years ago
14 Posts
8 Followers
73 Likes
Robbe PT15 cabin and bridge..from scratch...
Hi everybody. Yβall remember the βfunβ I had about 2 months ago, with the SAR motor issue and the loss of the PT15βs cabin and bridge? Well, Iβve got the SAR fixed, retrofitted a 3530 1700 kv outrunner and a much better coupling, and she runs smooth and cool. So...I decided to go ahead and do some updates and maintenance to my other boats in the fleet, which led me to the PT..I decided to start building the superstructure and get her back in the water. I worked too hard on her to let her sit around and gather dust.
I bought a pack of styrene sheet in various thicknesses, and ordered some sundry items that will be needed from Cornwall Model Boats. While Iβm waiting for those I decided to start cutting plastic.
Now, the original structure was comprised of 2 main moldings, some detail moldings, and of course built up detail parts and fittings. All that is at the bottom of the lake, and this boat is way the heck out of production, so I had no choice but to build it up from sheet. Luckily I kept my plans. I traces what I needed to get started from the plans and cut templates. Then I cut my sides and tops.i built the main cabin first. Iβm using balsa stock at the joints to allow me to sand a decent radius in the finished cabin(s) as the original had a slight radius at most corners. I also had to build up the entry βbucketsβ as they were molded parts too.
I got the main cabin built last night, and the sub/aft cabin tonight. I think it looks okay for now, need to finish some sanding and then join the two halves together with a bulkhead and ramps as the original. Still have to do the bridge, the original bridge was molded with the lower main cabin as a unit, and that entire section was molded from tinted clear plastic, you masked off the windows and shot it with paint. Iβm going to have to build the bridge as a separate part and glue it on. If I decide to do clear windows, Iβll have to cut the openings, paint the cabin and then glaze the windows before gluing it on, then mask the openings when I paint the final assembly, as Iβll have no access to the inside of the bridge once itβs glued in place. Alternatively, I can just paint the whole thing and paint the windows as they were pretty dark to begin with. Iβll make that decision in a few days, but Iβm leaning towards glazed windows as I think itβll be worth the effort.
Take a look tell me what yβall think, this is my first time scratch building anything in plastic.
Cashrc
3 years ago
7 Posts
5 Followers
15 Likes
Midwest Steam Engine and Elliott Bay launch
Hi all. Maybe itβs the fact that Iβm 1 year away from 60, or that I like different types of motive power, but for a while now Iβve wanted to dabble in steam.Different is good, when I flew RC I just loved my PAW diesels. Most of the guys in my club thought I was a little..eccentric, but I loved βem. Anyway, steam power has the same appeal to me. Now, about 15 years ago or so Midwest Models here in the States had a little oscillating single cylinder engine and boiler combo they called the Heritage Steam engine, and there were a couple of kits to go with it, the Fantail Launch and her big sister the Elliott Bay. Well...it wa my Birthday in January, and my buddy Larry just happened to have an almost new Heritageengine combo and Ellliot Bay...so some fellowship time and a little bit of cash found it riding in the back of my Abarth and heading for the shop.
I started on her a couple of weeks ago. The floor had been built, but that was it. I did the mahogany cockpit surrounds, installed the rudder and servo, and got the upper deck fitted. Now, the servo in this boat is permanently mounted, as once the deck is glued on thereβs no access. Also, the deck and hull has no flange to speak of, the joint is and edge on butt joint thatβs eventually covered by a mahogany rub rail.I added balsa strip to the inside perimeter of the hull, thinking I would have a better gluing surface, but didnβt take into account the rise of the deck that curves upward and away from the hull. Well, at least it stiffened up the hull and made it easier to assemble.
I got the waterline painted, then I did the hull and upper deck, but my first coat was too heavy and I had runs on the hull side. Iβm letting the paint cure a few days and Iβll sand it and try again. Hopefully Iβll have a better time of it the second go around.
Cash
Cashrc
12 months ago
6 Posts
7 Followers
34 Likes
Robbe (Krick) Dolly fireboat build
Hi yβall. I decided a few weeks ago to start working on my Christmas present, an ROmarine Dolly. My lovely bride, Teresa, ordered it along with the fittings kit and fire monitor kit. The Dolly is a beginners model, but there is some interesting things to watch out for during the build. The way the deck unit builds up is a little convoluted, everything seems to line up well until you add the cabin, then it seems to get out of whack. I spent considerable time adjusting, tweaking, sanding, etc to get it to fit..itβs not perfect, but it looks okay from a few feet away. The hull and deck are fairly straightforward, but the deck is a little flimsy so I added stiffeners for and aft to shore it up.
The boat calls for a Speed 400 on direct drive...couldnβt do it. Canβt help myself, especially since this boat may be put in harms way, putting out fires, rescuing errant ducks and the like. Sooo...I went thru my stash of motors, settled on an old AYK Magnum 480Z mild, very mild, modified. I have hot stock motors that run harder than this, but itβs smooth, has a pretty machined case, and is almost new. The stock 2mm shaft was used, I almost cut down a 4mm shaft, but the shaft and motor are lined up well. I may still add a brace between the tube and hull.i also stiffened up the bulkhead mounting plate.
I found some 10th scale diamond plate, so thatβs what the fire monitor area is covered with. I also found a cheap and cheerful light bar that will be added and wired in. I took it apart to paint and reassembled it.
The fire monitor is neat, if somewhat fiddly to build and set up. It has a return spring to pull it in the up position, thereβs a very fine (.5mm or less) nylon thread that runs from the monitor down a 1mm i.d tube that is parallel to the main tube, the thread runs thru that and is connected to a servo. The servo pulls down, when pivoting up the spring adds positive mechanical pull as the servo feeds the thread. Pretty neat and simple really, but a little bit of a pain to build.
Thatβs about all for now, need to add the monitor servo and then see where Iβm at.
Cash
Cashrc
3 years ago
5 Posts
5 Followers
26 Likes
1/40th Billings USCG motor lifeboat
Hi yβall. I had mentioned in the Night Watch thread how we, as in the whole family with the exception of the Cats had come down with a bacterial infection...plus, my Christmas present, a Ro-Marin Dolly with fittings kit and fire monitor kit had been back ordered from Germany, and wasnβt due in till around New Years. Itβs here now, waiting to hit my bench. Anyhow, I was off work for the holidays, getting over the crud, kinda feeling sorry for myself. I had cleaned off my bench and done a some reorganization, and I was sitting there, bored to tears. I looked at my kit stash, and I saw the little Billings kit that I had acquired in a trade. Now, this is a small boat, 14 inches long. Smaller than I like. However, the more I looked at it the more I started thinking. I pulled it from itβs resting place and started going thru it. It had 2 props, shafts, and 2 300 sizes brushed motors. I decided that, if I were to build the little beast I would have to simplify the running gear....then, I remembered I had a little 20mm outrunner and esc. So, I started from there.
Inside the kit was an addendum from the importers of the kit at the time, I think it was Hobby Expo. Anyway, the sheet recommended to have the entire deck made removable so one could access the radio gear and drive batteries. They recommended Velcro. Nope. Thatβs asking for a leak. Since itβs 20 years or more since this particular kit was made, radio gear and batteries have changed profusely, and for the most part, for the better. So I decided to use the outrunner with a single shaft for simplicity and to keep room for batteries and the steering servo.
I installed the shaft first, then made up a bulkhead from scrap abs and installed it into the hull, giving me just enough room for the motor and a decent solid coupler. I then decided the stock rudders were too small, so I made some slightly larger out of thin plywood. I used the kit components for the rudder linkage, I then decided where to cut my hatch, cut it out, and basically started building. Everything will be easily accessed save the rudder linkage. All the linkage is attached by z bends, I have adjustment at the servo by use of a barrel connector.
As of now the boat is basically built, Iβm doing the deck details, and I had to repaint the trim line as it was pointed out to me on another board that the trim is supposed to be black, not dark blue..the person who caught my error used to work at the Coast Guard paint shop, and worked these boats, so....I fixed it.
Anyway, hoping by the end of the week, maybe middle of next sheβll be done, then weβll see how she goes. Iβve already done a leak test and amp draw, and sheβs pulling about 2.5 amps at full throttle, so at least I know Iβm not going to burn her up.
Cash
Cashrc
3 years ago
17 Posts
8 Followers
94 Likes
Robbe PT15
Hi yβall. Did a little trading with my buddy Larry Buchwalter a few months back, came home with a just started Robbe Paula III and a NIB Robbe PT15. I donβt have a military boat in my fleet, and, since Iβve wanted one of these kits for quite a while now I decided to start building on her last week.
Iβve made a few changes, laid the rudder servo on its side instead of standing up. To me itβs more secure that way. I had to make up a servo mount from scrap balsa and ply. However, where it mounted made it difficult to install or remove the servo arm as the hatch edge of the deck would be in the way. I mounted the servo with Allen head servo screws, and an Allen head screw retains the arm. I also enlarged the aft hatch, which gives me room to service the servo if needed. I also cut downs the stock battery tray to save room, and mounted it off just off center. Iβll either be using a 6 cell pack or 2 cell LIPO for power.
Speaking of power, this kit came with both the fittings kit and a Robbe navy geared drive. Iβve decided to use the gearbox, shaft and prop, but Iβm ditching the EF76 motor for a silver can Mabuchi 540, my resining being that the stock motor has a lot of torque, but might fall on its face on 6 cells (the plans originally called for an 8 cell 9.6 volt pack). I think the 540 will do fine, but I might try to dig up a Graupner Speed 600 and use that. Iβm still open on power.
Anyway, the hull is built, gearbox and rudder servo installed, rudder linkage and rudders mounted. This boat will challenge my skills, as itβs not quite as easy to build as some of the other Robbe kits Iβve built. Thereβs lots of details, but fitting the deck to the hull in this boat was...well, it was a job. It looks okay, everything is straight, but I do need to do some filling and sanding to make it really right.
I have pics of what Iβve done so far, any questions or comments fire away!
Cash
Cashrc
3 years ago
11 Posts
5 Followers
49 Likes
Graupner Hertha Jeep
Okay, so Iβve just finished the Graupner Taucher Wulf, and Iβm one of those modelers that likes to have the workbench..ahh..working. Now, the Wulf was a bit of a pain in the rump to build, mainly because the instructions were almost non existent. There were pictures, mind you, lots of pictures, some even contradicted each other..but precious little info, measurements, that sort of thing. Anyway, I swore up and down that I would never build another modern Graupner boat again. I have a small stash of kits and a couple of boats to restore..nope, not doing it.
Then, that little voice in my head returned..same voice that tells me itβs okay to drop the hammer at a red light because that voice didnβt see the police cruiser in the parking lot..same voice that says βyouβre not THAT full, one more slice of pizza wont kill youβ. That voice. The one that said..βLook! The little Hertha Jeep is on sale! Youβve already seen the worst with the Taucher, go ahead and buy it. You KNOW what your getting into this time...ahhhhahahahahaha!β
So theres a Hertha Jeep on my bench. And, again, lots of pics, a little more info this time, some things that make me scratch my head and some that make sense. The hull is blow molded..I think itβs ABS but it just looks different from any plastic Iβve ever seen. Nicely made though. The kit parts and fittings looked good, so I dove in.
I decided that this time, I was going to build everything as sub assemblies and make sure everything fits to my satisfaction before I build myself into a corner like I did with the Wulf. The first thing I started was the cabin. Itβs built from some very thin laser or machine cut abs. Much thinner than the Wulfs pilothouse. The cabin roof is molded in either resin or plastic and primered, and I used that and the hull to jig up the cabin. Everything fit okay until I got to the forward windscreen. The oblique angles and the way the darn thing fit had me stumped. Then I trimmed it, which was a mistake. However, it started to look decent when I realized that some of the ca had dribbled down and glued the bottom edge of the windscreen to the hull. !!@&&%!!!!
I had to break the bottom edge of the windscreen to get it loose from the hull. However, I was able to fix the damage with some scrap plastic and a little βmodelers bondoβ (Tamiya plastic filler). This was a rookie mistake, I was thinking of protecting the hull with wax paper, but I didnβt heed THAT voice, and got burned in the process. Lesson learned.
Once the cabin was done, I built the insert that goes into the aft part of the hull. I donβt have pics of that yet but Iβll post them soon.
Cashrc
4 years ago