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Well, when I started this build I said it was just going to be a quick, easy build.....but I can't stop getting more ideas and adding on. Lights, now exhaust smoke! Could not resist taking time last night to try my hand at a homemade smoker. I was pleasantly surprised at how easy it was to build one and it works great. Then today I decided rather then put it inside the hull I would put it topside for easy access and to keep an eye on it....fires don't do well on boats. Mounted as shown, still in progress but I made an enclosure to cover it. Will fashion a new stack out of the white tube in the last photo. Now what else can I add...... Joe
What do you mean when you say you will inspect it for real this weekend. Where are you going to find a REAL RAF Crash Tender. I didn't think there were ANY left in existence. I have seen MTB 102 several times and spoken to the crew of that day and when I asked could I come on board to have a look around, they always decline saying sorry insurance will not cover us for that.
I used glassfibre cloth and epoxy resin successfully when building my 46” RAF Crash Tender and I chose to do the same with the Police Boat. See: https://model-boats.com/builds/view/23951 for the Crash Tender blog. The application of the cloth and resin serves to strengthen the hull enormously and produces a completely watertight hull, and after additional coats of resin are applied and sanded between coats resulting in a surface that is absolutely smooth and the perfect substrate for the subsequent paint process. With the benefit of my previous experience and greater confidence working with these materials I used a ‘fast’ hardener with the resin which gives a working time of 30 minutes and a much shorter curing time where previously I had used a 90 minute ‘slow’ hardener. The basic process is to cut the cloth roughly to shape with a good margin of overlap and then use masking tape along one edge so that after the resin has been brushed onto the hull the cloth can just be lifted over onto the resin. I then lightly brush the cloth into the resin and push the cloth into any tight angles, without any further resin on the brush, until the weave of the cloth is filled and there are no air pockets and the cloth is completely flat. At this point DO NO MORE as the resin will start to harden and any more fiddling with it will cause the cloth to lift and bubble, less is definitely more in this instance. The resin should cure completely overnight and can be trimmed with a sharp blade. I tend to cover a hull in five stages, as there are five ‘faces’ to the hull and thus it’s a five day process for me, this may be time consuming but I think the results are worth the effort. I will brush on two further coats of resin when the rubbing strakes and gunwales have been added, this will completely fill the weave of the cloth to create a nice flat surface but it’s essential to rub down each coat after curing. All the materials were bought from ‘Easy Composites’ https://www.easycomposites.co.uk
Last night I had done a quick railing mockup as seen in the first three photos. Decided to go with styrene and use a rectangular stanchions (verticals) and top handrail along with horizontal round intermediates. Drilled holes through the verticals and inserted the round rods, then glued. Worked pretty well. Next few shots show how I typically sketch up to scale and determine proper spacers, dividers come in handy for this. Then drew some guide lines for assembly, taped it to my tack surface, covered in wax paper and pinned the assemble in place. Pins do not penetrate anything,just uses pressure to secure. Some drops of styrene cement and the parts are welded together. Then on to all the railings needed. Will let dry overnight and trim ends in place. FYI -- Tack surface is just a piece of acoutical ceiling tile, I cut down the 2'x4' size to make smaller ones for my tiny workbench use. I learned this pinning method from building balsa airplanes, comes in handy a lot...... Joe
Reilly, Good Tip....I also use brass rod 3/16" dis. Easy to slot and solder a brass plate to, have never had a problem with bending, etc. I generally use them as a core and cover with plastic, wood or just leave as is. Joe
You can still get greases that are applied in liquid form but they now tend to be in spray form. I personally do not use silicon oil or grease, it is fine until you need to repaint your boat, it forms a film that is almost impossible to remove, even cellulose thinners has no effect and any paint applied fish eyes and separates, there are dedicated removers but we tried one on a contaminated bike frame which had been blasted, with poor results we had to treat it several times and had to reblast it, we discovered silicone grease had been used in the bottom bracket. Keep silicone away from any surface you may need to paint.
I am building a 1/24 th scale Perkasa,but this recommendation applies to any warship. Autotek etch primer covers anything with even one coat,and, as an etch primer is good for any substrate including galvanised , ally, plastic / resin.It has an authentic Matt finish,and one squirt repairs any building marks.When finished, I will laquer with Autotek MATT laquer. Find it on ebay at about £10.50 for two 500ml cans! Use in well ventilated room,it is acidic!
Last night I started on the large hatch that will cover the entire deck opening rather than several hatches, this is to keep with simple approach. The pilot house and whatever else I decide to add will be attached to this for easy removal and access for battery charging and maintenance. It's not as easy as a flat deck hatch as I curved the deck and wanted to curve the hatch as well. See photos, I cut curved sides, then I clamped it to blocks on the bench to bend , glued and let dry for 24 hours. While that's setting up I started on building some tow bitts. These I am making from styrene that I had from my railroad scratch building. See two small for aft and 1 larger at the bow that is in progress. In addition, I showed some shots of my Brooklyn Tug Bitts. These are heavy duty and were made of brass! Still enjoying this simple build..... Joe
Captain's Log: Supplemental Well, today was a good day to fix. The leak in Brooklyn's aft end! I scraped off the paint around the skeg area and boss! I then took a piece of 10mm x 110mm plastic. And glued it to the seam. Making sure to cover the area. That was cracked and leaking! I am then going to let the glue set over night. If all goes well, the leak should stop..... I will reassemble her aft end. And do a Domestic Test Tank Test! If the Test Succeeds. I will then repaint the aft end of the tug! And put all of her Ballast back and her batteries! Hope my repair works!!!
Hi Dodgy, believe I did mention that about 8 days ago. I discovered the same thing with my Turnigy ESCs. You have to change the operating mode to For/Rev instead of For/Brake/Rev, as described in the instruction leaflet I posted above. Cheers, Doug 😎
".. Worked through the instructions and it made beeping and squawking noises in what seemed the right places but still no reverse. The increase in revs does now cover the whole of the stick travel above the mid point so I has changed something. Lost the will to live after 2 hours so went and worked on something else. Steve..." Just a thought - may not be applicable, but we often share our reversible ESCs with the car fraternity. And some of them have an odd reverse. For some cars, you may be happy with straight forward and reverse, but for racing this is not ideal. Dropping into reverse if you move the stick/trigger back past neutral would make the car uncontrollable on a corner. Instead, the racing car boys have a system whereby the forward stick increases speed, while 'reverse' performs dynamic braking by shorting the motor terminals (or perhaps even regenerative braking!). To a boaty, this would seem as if the forward stick worked, while reverse did nothing. These racing car ESC programs DO allow a proper reverse. The way you usually get to it is to bring the stick back to reverse, then forward to neutral, then back to reverse again. It's a two-stage process - call for reverse twice. If you go into reverse, then forward, then back again you won't get reverse - it has to be reverse, neutral, reverse. Which is fine if you are manoeuvring a car into a parking space, but rather clumsy for a boat....
I checked, and it looks to me like they changed the design. The current oen shown is plank on frame. If you seal the inside with epoxy you can cover most of the interior to seal it up. I honestly don't think you would have a problem
Captain's Log: I have discovered where the leak is coming from! As the Hull is two halves glued together. The aft end of the hull. Is the weakest part of the hull! It has cracked under stress!😲😡😭 So, what I plan to do. It strip the paint in that area. And glue a piece shaped like the seam and Boss!😁😁😁 But, for this I have to take everything out of the hull. The hull will be light and easy to work with then! Note: It's good to do a Domesticated Test Tank Test! As often as possible. If a leak is going to develop. Better for it to develop in the DTTT! Than for it to happen 125 meters into the pond!
Merry Christmas to All! Yesterday I made a brass strap to secure the motor, then aligned the drive shaft and stuffing tube. Tacked tube in place with a gel superglue, will be covered with epoxy later. Used a short piece of aluminum tube to help align the motor and shaft. A coupler will be placed here. Cut some plywood pieces to create keel at the shaft tube. White stuff is marine epoxy by locktite, just enough to set everything. I will then coat and finish this assembly. Finished the day's work by constructing a rudder, no photo yet. Enjoy Christmas! Joe