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August 2017: 9 people July 2017: 16 people June 2017: 8 people May 2017: 8 people April 2017: 23 people March 2017: 9 people February 2017: 12 people January 2017: 15 people |
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46" RAF Crash Tender
Type: Fire Boat |
Fleet Admiral!
Top Ranking Member!
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2563 Total Points
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Good Conduct Medal
This member donated! United Kingdom
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Hi Dave. The iA10B RX does support S-BUS👍.
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Hi Doug. Yes that's correct, the trainer socket on the back of the TX is used for the firmware update. I found the info for the TX mod on another site and happened to need a few bits and bobs from Hobbyking so I added them to my order, so for £18 I can unlock the 10 channels that the system will support 👍😁 As I said I've not done the mod yet but when I start the new build I'll probably do the update and then use the old 6 channel RX in the new boat and store a new model preset in the TX just for 6 channels. Robbob.
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Hi All The Turnigy/Flysky iA6 are amazingly good value systems but did you know that they can be upgraded to full 10 channel operation! You will need to buy a new 10 channel RX for about £15: https://hobbyking.com/en_us/turnigy-ia10b-receiver-10ch-2-4g... And a cable to go from your computer USB port to the connector on the back of the TX for less than £3: https://hobbyking.com/en_us/hobby-king-2-4ghz-6ch-tx-usb-cab... And then the firmware update from this site: https://github.com/benb0jangles/FlySky-i6-Mod- There are also some YouTube videos to guide you through the upgrade process. This is one of a number of them on YouTube. https://www.youtube.com/watch?v=-iMQMh_kgRY&t=187s I have bought the bits but not got round to doing the upgrade yet but apparently it is a very popular mod that allows you to assign a separate auxiliary channel to each of the switches and knobs. Robbob.
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I had just turned 5 in September 1960 and probably had my first bicycle, falling off was likely to have been the only thing on my mind 😭. My granddaughter has just turned 4 😁. How time flies 😱
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While doing a bit of research on model boat fittings I came across this Keil Kraft catalogue on the RClibrary website. http://rclibrary.co.uk/title_details.asp?ID=1025 It makes for very interesting reading and has a foreword by Eddie Keil and an article by the legendary Vic Smeed. There's lot's more great vintage magazines on the site too 😁 EDIT. Check this one out as well: http://rclibrary.co.uk/title_details.asp?ID=1184 It has a boatbuilding article by L J Rowell Robbob.
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Hi Colin. Yes, the very same 👍 Rob.
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Hi Colin. Welcome to the forum and congratulations on your good choice of model 👍. I bought all of the brass pins I used from a UK based eBay seller http://www.ebay.co.uk/itm/SOLID-BRASS-PANEL-PINS-15mm-20mm-2... I can't imagine that something similar would not be available in Oz, try a good joinery or cabinet makers supply outlet. I mostly used the 15mm size and used, quite surprisingly, a total of around 500 😱. These pins have a tapered head rather than a flat one so that they can be punched flush, or just below the surface of the wood very easily. This is important when pinning the side and bottom skins so that the pin hole can be filled and sanded to give a very smooth surface for finishing. Also, when pinning the thin wood strips always pre-drill the wood to stop the wood from splitting. I'm not sure if CMB supply this type but Javro, who replied earlier, may be able to confirm this. Good luck with the build and please do think about posting a build blog on this site and ask as many questions as you need to. As I discovered, the help and advice you will get will be invaluable. Rob.
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Hi Paul. I will certainly video the maiden voyage, I'm just waiting for the lake conditions to improve. Thanks for the good advice as always. BTW. I like your 'noisy fireboat', sounds really good, those transducers are very effective 👍 Best. Rob.
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Hello Inkoust. Děkuji 👍
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Friday 18th, Saturday 19th, Sunday 20th. A hugely popular exhibition, well worth a visit. Do visit the South West Meccano Club stand and look at the 'USS Missouri' model 😜 http://www.bristolmodelengineers.co.uk/Exhibition/exhib.htm
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No flies on me mate 😁
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http://www.stalbansmes.com/Exhibition.htm Saturday 23rd & Sunday 24th September. A great exhibition with lots to see and something for everyone ! I will be showing my 46" RAF Crash Tender for anyone who wants to see it 😁
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Hi lezz57. Good choice 👍 I hope you have as much fun as I have building your crash tender. Please do consider doing your own build blog, they are very helpful and generate a lot of interest and encouragement from the readers. All the best. Robbob😁
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Hi Boatshed. Sorry, not until everything is agreed 🤐 Robbob.
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Hi Dave. Glad to hear that you enjoyed my blog. I may be doing another one quite soon, all a bit 'hush hush' at the moment and too early to say much about it 😉. Meanwhile I need to get this one in the water, just as soon as the lake fills up and the weed dies down 😡 Robbob.
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Having spent so much time adding fittings and detail to the removable cabin roofs and hatches the last thing I want is for them to be dislodged and see them sink without trace 😱! Having used some amazingly strong neodymium magnets to hold the foam tanks securely in the rear well I was confident that they would be more than powerful enough to hold the various roofs and hatches in place so I scoured eBay for some suitable sizes and shapes. I settled on two sizes, 25x6x3mm and 12x6x3mm and ordered 10 of each, more than I need but so useful to have in the bits box. A word of caution with these magnets, always slide them apart and avoid letting them crash together as the impact can easily break them into pieces, as I discovered. Thankfully I have some spares ! For the engine roof magnets I made a couple of small plywood brackets into which the larger magnets are fixed with epoxy and these were in turn epoxied onto the inside faces of the engine room walls. The mating magnets were let into the underside of the roof frame and firmly glued in place after double checking the mating polarity and orientation. An identical method was used for the forward cabin roof but using the smaller magnets. For the removable panel in the centre section over the motor I used a single pair of small magnets on the rear edge only as the front of this panel is held under the cabin door in a rebated part of the floor that forms the threshold of the door. I had to fit a small brass handle in the rear of this panel so that I could pull the panel up and away as there is no other means of doing so without, I made a ‘hook tool’ from some brass wire for this purpose. The floor panel in the rear cockpit is secured on it’s rear edge by a pair of the larger magnets, the forward edge being held down by the towing hook bracing stays. The removable hatch in the rear cockpit floor was also fitted with two pairs of the smaller magnets let into the underside of the hatch and the hatch framing of the floor. One of the brass handles that I that had previously set into the hatch was bent up slightly so that I could use my brass ‘hook tool’ to release it from the magnets hold. So now all the roofs and hatches are firmly secured by the concealed magnets and are easily removable without any fiddly catches or fixings and now there’s now very little chance of them coming adrift and disappearing! The final finishing detail are the two RAF ensigns, one on the mast and one on the stern flagstaff. The ensigns were made by Mike Allsop Scale Flags & Ensigns who was very helpful and advised me on the most suitable sizes for the 1:12 scale of my boat. His flags are extremely well made, excellent value for money and look very realistic when flying and fluttering !! Mike can be contacted at: scaleflags@outlook.com or by telephone on 01476 573331 They are hand made from a fine and flexible silk cloth that behaves like a real flag even in a slight breeze and are easy to fix with diluted PVA glue. The smaller flag was fitted to the lanyard on the mast as described in the supplied instruction sheet. The ensign on the stern flagstaff was very carefully formed and glued so that the flag was not fixed in one place and could rotate around the shaft of the flagstaff as this piece screws into a brass fitting on the rear deck and this will ensure that it will always find it’s own position. A small brass ring was formed and glued to the flagstaff below the ensign so it would always stay at the top and not slip down. So, all hatches battened down, flags raised and ready for action. That’s just about everything finished now barring any trimming and ballasting required and is ready for it’s maiden voyage. I hope that all of you that have been following my blog have had as much enjoyment reading about my build as I have had in the building and finishing process 😁 And a big thank you to all that have contributed so much with encouraging comments, suggestions and advice 👏 😍
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Hi Canabus. The prop is a 50mm 2 blade X type, I have yet to run the boat but I'll be happy with a scale speed rather than speed performance.😁
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Hi canabus. I like your thinking and that's precisely what I have used, although not from Hobbyking. A much better choice of sizes and shapes can be found on eBay. Rob
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What a truly international bunch we are 😁 🇬🇧 🇮🇹 🇩🇪
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Salve Saintsalvio. Grazie per i tuoi rimedi gratuiti sul mio lavoro di costruzione della barca. È molto soddisfacente sapere che il mio sforzo è riconosciuto. Spero che "Google Translate" abbia reso leggibile la mia risposta. 😁 Saluti. Robbob.
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Hi robhenry Thank you for your complimentary remarks. I didn't really consider building the boat with twin motors and rudders as I wanted to build the kit 'out of the box' to a great extent and also because I was rediscovering the hobby and all of the new technology and techniques that it now benefits from. With the experience I and knowledge that I have now gained I would be not so hesitant to consider such things. I'm grateful for your contribution to Mike's data on the RAF boats as it will have no doubt filtered down to the benefit of my boat build. As I have discovered, surprisingly little information on these boats exists or has been made public despite their popularity with model builders and it would be a great thing if everyone were to pool their knowledge and resources to try and redress this situation. I will certainly try to photograph the boat in action if I can manage the controls and a camera at the same time 😁 Rob.
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3 sets 😲, that's 150 clips if my geography serves me well. Still, they're cheaper than chips so why not 😜
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This item is available from Keith at Modellingtimbers. http://www.modellingtimbers.co.uk/21.html Would something like this be suitable ? You could possibly adjust the supply voltage and current to drop the revs. Robbob.
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Hi Doug and AllenA. Yes, it is indeed good old Hammerite 👍 I sealed all the interior surfaces with a couple of coats of sanding sealer and then two coats of the silver Hammerite on the hull bottom, sides and bulkheads and it gives a quite an attractive finish which is very durable. It was recommended by VMW in the build instructions and I'm very pleased with the result 😁
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Hi Wayne. Thank you for your compliments. The hose spring clips came from eBay. Ten each of 5/6/7/8/9 mm, only £1.55 including shipping from China. About a ten day delivery but still a real bargain. Here's a link if you're interested. http://www.ebay.co.uk/itm/50Pcs-Spring-Clip-Fuel-Line-Hose-W...
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Hi Rookysailor I have indeed included all of the filling points on the deck, there are various for oil, fuel & fuel sounding (dipstick?), foam and fresh water. Fortunately I have a drawing, courtesy of Mike at Vintage Model Works, that details them all. Rob.
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The switch panel and wiring loom was made, tested and dry fitted a while ago and so it only needs securing to the bulkhead with four fixing screws, the two NiMh batteries were strapped down to the bearers with cable ties as close to the chines as possible and the XT60 connectors mated. I have read that placing the heavy batteries as far away from the keel as possible improves the handling, all other heavy items are centered along the keel for symmetry and should help the boat to sit evenly in the water. I’m not sure if I will need to do any ballasting, hopefully the maiden voyages should give me an indication. The prop shaft was greased and fitted, and with the prop, thrust washers and lock nuts in place, the clearance was adjusted and locked with some Loctite so the motor could then be installed. The initial motor alignment was made with a solid coupler which was then replaced with the universal joint, I took the precaution to grind a flat on the motor shaft so that the locking grub screw has better grip on the shaft. The grease tube was then fitted to the shaft clamp and secured to the side of the switch panel. The ESC was fixed to the back of the bulkhead with another couple of cable ties and the input cables, again XT60 types, and the three pole XT60 motor connectors mated. I have also fitted a Turnigy in-line volt, amp and watt meter in the circuit before the ESC so that I can log readings in case of spurious fuse blowing issues or unexpected battery life problems. The water cooling tubes were then run from the water pickup, through the ESC and then back to the transom ‘exhaust’ outlet, all water connections are fitted with spring clips to ensure water tight connections. I have used quite a large bore silicone tubing to ensure maximum water flow and made sure that all bends are kink and compression free. The R/C receiver is fixed to the rear cabin wall with some Velcro pads for easy removal, the two aerials were fitted in some plastic tubing at 90 degrees to each other as recommended for 2.4 gig systems and as high above the waterline as possible. The receiver is connected to a separate 4.8 volt NiMh battery via a changeover switch that also has a charging connection and LED power indicator, and I have also fitted a battery voltage indicator, just because they are cheap and convenient although the R/C system that I have has telemetry that reports RX voltage as standard. The battery charger I have chosen can handle the 16 cell series configuration of the drive batteries and so they can be charged in-situ when the main power switch is toggled over to the charge position. The RX and lighting batteries are charged separately. All of the servo and lighting switch cables are routed through the hull to the receiver through pre drilled holes in the bulkheads at high level for neatness and to retain the integrity of each compartment just in case 😲!!. The servo and cables and the water cooling tubes are strapped to a supporting bar between the bulkheads for neatness and security. With the TX switched on first, the RX is then powered up and the main power switch toggled to the ‘operate’ position, the ESC then gives a reassuring series of bleeps that confirm that all is well. The ESC was set up using a Turnigy programming card specifically for that model of controller and if required I can tweak the settings once the boat has had a few sailings. The last things to do now are to fit some strong magnets to hold the hatches and roofs down securely and then finally raise the RAF ensigns 😁
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Thanks you for your generous words kind sir. Model making is indeed a good therapy and I'm so grateful that the staff here allow me to use sharp implements unsupervised but I still have to wear the special jacket which is rather limiting 😜 Must go now...have to take my meds..... PS. who is bro?
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After test fitting the hose ends to establish the correct lengths the hoses were trimmed to size and the fittings were then glued into the hose ends with some epoxy. On the real boat the hoses are arranged to lay on the tops of the foam tanks and they are supported on the stern coaming by a bronze hook. I formed this hook from some brass sheet so that it holds the hoses firmly one above the other, this was primed and finished in gunmetal grey and fixed to the coaming with a couple of brass rivets and a spot of epoxy. For a bit of extra security I cut some large diameter heat shrink to form some bands around the hoses to hold them together. So now the hoses are all finished and I think they look really good, I’ll probably re-polish the brass fittings and apply a light coat of lacquer to keep them nice and shiny at a later stage 😎
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The remaining hose fittings are the male & female connectors and fortunately require nothing more than drilling to take the four short brass ‘turning handles’ which were soft soldered in place and then filed to length. The suction hoses themselves proved far more difficult to make to a satisfactory standard and after several experiments with different gauges of copper, steel and stainless steel wire I found a 1.25mm galvanised ‘garden wire’ that proved malleable enough to be formed into a long coil spring that when covered with some black heat shrink tube looked OK. I used a length of 8mm diameter aluminium tube as a former and hand wound the galvanised wire tightly around the tube to form a spring. This was a painful process, quite literally, and caused blisters on my thumb and forefingers despite wearing protective gloves 😭 The springs were then stretched out on the rod to space the coils evenly and then drawn through the heat shrink tube, and then a heat gun used to shrink down the tube onto the springs. While the newly formed hoses were still warm and pliable I put them on a former with the correct curvature and applied a little more heat and then left them to cool and set. The hoses were made over length so that, when finished, I could trim them to the correct lengths to fit into the rear well of the boat with the fittings attached. See part 4 for the final assembly...coming soon.
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