hi I have been off the air for a while so time for an update. i have sealed and strengthend the hull by using very light glass cloth and Ezy-cote resin. this was very easy to use and i think gave very good results praticularly as i have not done glassing before. the the boat has been painted now and i am just starting to plank the deck. to plank the deck i am using the permenant marker on the edge to give the impresstion of caulking. i am verying the time the marker is in contact with the wood so the mark very's a little on thickness i think this looks more realistic than an even line, on a test piece it looked good. i will add some photo's soon, i keep forgetting to take them🤔
Ref Dave M's airboat pics, did they come with the hull and the deck, or did you make the deck yourself? Mobile Marine only seem to sell the hull, and the two boats in your photos appear to have the same decks. Chris
Hi Sonar My airboat was a plastic hull and top from Mobile Marine. I added my own top details and use a 2228 brushless with a cut down 10" prop. Cheap 30amp Chinese ESC and 11.1v Lipo. This is the larger version there is a smaller version also. I am attaching some pics of mine and a fellow club members model Hope this helps. Drones are a whole new ball game but usually come as a complete ready to fly set. If you are thinking of pics of your boats on the water you will need to spend about £300 to get a good basic but reliable drone. Dave
I am thinking about some sort of airboat. Like a swamp boat near on flat bottomed raised seat ect. Model airplanes do not do much for me few and far between are the areas to fly. But Am looking at some camera drones..Ready to fly.
Mighty meaty! 👍 Good luck with the 'Messcave' 😉 I have the same problem 🤔 Pics show (amongst accumulated junk from various repair jobs!) - electrics bench and boxes of 'stuff' acquired over the last few years of my working life still waiting to be sorted out 😉 - various ships waiting to be refurbished or fitted out; HMS Hotspur 1:72 H class destroyer 1936, HMS Belfast 1:128 6" light cruiser U25 (or 26?) 1:72 Type IIA U-boat 1936 Billings Gina Danish fish cutter Graupner Southampton Various Plastic Magic projects (stash!) - the bigger ones; HMS Hood, Ark Royal, Illustrious, Type 45, USS Enterprise (The Big E), Bismarck all 1:350; USS Fletcher destroyer 1:144, are down in the cellar, the bench down there is just as bad 😡! and finally - my poor old Sea Scout being sanded on the kitchen worktop for lack of space on the bench! 😭 "Stuff accumulates to fill the space available for it" 😉 cheers Doug 😎 Oh! Nearly forgot 😲! and there's a 1:128 Graf Spee pocket battleship on a shelf in the living room, waiting for propshaft repairs.
"and it all seems so basic compared to what we have now." Absolutely, but full of improvisation and ingenuity! And damn heavy!! I also built servos and ESCs in the past, but as you say it's not worth it now, especially for the micro versions I need for Plastic Magic. But I still build the odd control / switch / relay board for special functions. That's also fun, in a masochistic sort of way! I still keep my MC10 40Meg set going for the U26, even though I haven't managed to get it underwater yet 🤔 and an even older Sanwa / MacGregor 35Meg set for the odd plane / airship / flying boat still kicking around. variety is the spice of life 😉 Cheers Doug 😎
A brief history After the second world war and as part of the occupational forces the Second tactical air force the RAF took over Sylt airport in 1945 and later in 1946 the RAF decided to use the airport and the airspace west of Sylt and Amrum as a firing range, and was known as RAF Sylt Armament Practice Station. From February 1948 to February 1949 the airfield was closed and prepared for the operation of jet aircraft. For target practice a target towing Squadron was stationed continuously on the station. The aircraft used were Miles M. 25 Martinet, hawker Tempest TT, DE Havilland mosquito TT. 35, Gloster Meteor F. 8, Meteor T 7. For instruction and training flights the flight also had some DE Havilland vampire T. 9s, hawker Hunter F. 4s, Hunter T. 7s. The aircraft of the target towing squadron were housed in the hangar of 402 near the South West of the Station. Therefore, the unofficial designation of weapon training squadron 402 was used at the time. For patrolling and securing the range area, as well as for rescue and training operations Marine Craft Section boats were stationed at List and Hörnum, Bristol Sycamore HR 14 rescue helicopters were Also station at RAF Sylt. Air traffic control boats and HSLs were stationed in the port of List at the beginning of the fifties (see pictures) D Boats In 1954, the decision was taken to replace the air traffic control boats and the HSLs with RttLs mk2s Rescue Target Towing Launch. As part of the rebuilding program to help the German economy the boats were designed and built by Krogerwerft Yard at Rendsburg. (Later taken over by Lursson ship builders) and were numbered D2762- D2766 these boats came in service mid 1955 which explains why my Father severed on both HSL and D-boats (preferring the D-boat) D2762 and D2765 Based Hörnum, D2763 and D2764 from List, with D2766 as a reserve boat in the event of maintenance or breakdown, Their design was very different to any other boats in the Marine Craft Section/unit more like the German Schenllboot or S Boot (allied code name 'E' Boat which my father always used), with flared bows and rounded bilges and powered by high speed diesels. The D boats were fitted with winches for Target Towing, these were removed as the boats duties were change to Range Safety and ASR These boats only served with the RAF, until 1961. Two were sold to the south African Air force D2762 and D2764 in1961, and the other three handed over to the Federal German Navy in 1961. All were subsequently used as ASR craft. D- Boats in German service The German Navy, the “Bundesmarine commissioned them on 1.9.1961 as FL 9 to FL11 and were used by Marinefliegergeschwader 5"naval aviation Squadron 5” Until end of September 1975. the three were termed as air traffic control The fate of these three boats is a bit uncertain, one of these boats was in the process of being sold as NVG S1 as a North Sea supply boat, this deal fell through and the boat was sold to private owner in Italy (no further record for this boat found) the other two boats are said to been scraped or de-commissioned , however these boats are quit properly the two that ended up in the service of the Spanish customs service as cutters, after they were confiscated when smuggling, I have tried to contact the Spanish about these boats but have not heard from them and presume they were scraped or sold in to private hands ( there is the suggestion that they were driven on rocks and sunk, no evidence found) D-boats of the South African air force/navy The two boats that were obtained by the south African air force in 1961 were originally known as R30 and R31 and they served under SAAF until 1969 when the unit was taken over by the south African navy and R30 became P1552 and R31 became P1551 these were changed again when holiday makers referred to the boats as PISS1 and PISS1 too R30 to P30 and R31 to P31. Both these boats were diffidently sunk R30 Lost off Saldanah Bay on 7 October 1988 after striking a reef off Danger Point. R31, near Cape Point, after she grounded through contaminated fuel issues There are somethings about these boats that strike me as odd, The originations that took over these boats, they don’t like to mention the fact that these were ex-RAF or British boats, There is no record of the Spanish boats, it is said that they were sunk but no details are available except what is said on one form. I think I have done as much looking for information as I can, most of the bare facts are stated so thanks to all those web sites and forms that I have used and the pictures I have used I would like to thank to Dave M for the drawing And thanks to the marine craft branch museum for their help and for putting me in touch with Mr Rick Mortby who built the museums model of the D boat And a big thank you to Rick Mortby for the scale drawing and for his trust. And to Dr Christian Ostersehlte historian for Lurssen shipbuilders for the pictures of my Fathers boat D2763 and now I can start the building of the model D boat
Hi Sonar Inrunner brushless have an outer case which remains static just like a brushed motor. Outrunner brushless have an outer case that revolves around the central core which remains static. The revolving outrunner case forms a flywheel which is beneficial when driving a model boat prop where the water resistance is greater than a plane propeller in air. The effect lessens with larger motors used say for fast speed boats. Doug That link appears to be to a file somewhere but there is no url. Dave
So the Crash Tenders only had a speed of 30 knots and that isn't that quick. The scramble nets were used for recovering airmen downed in the water, they had to get to them quick. Have you been on the water at 30 knot's compared to in a car it feels a hell of a lot different. British Power Boat 60 ft MTB. They were based on the British Power Boat rescue craft and were originally designed for the Royal Air Force but reduced to 60 ft (18 m) in length. They could carry two 18-inch (457 mm) torpedoes and achieve a maximum speed of 33 kn (38 mph; 61 km/h).
I was told any brushed esc over 25amps by the guy from SH Grainger. Well, that's what he sold me to pair with the 850's he sold me at the International Model Boat Show at Warwick last year. I decided to go brushless after that, so, motors and esc's are sat in a box in the garage, so I don't have any practical knowledge, sorry. Just what I was told. Best wishes, Dave W
[Score: 8/10] 24"/900g Skimmer Capable of 10mph and a runtime of 30mins Single Propellor (2 Blade S Type) Direct Drive to a 2812 (2 Blade S Type) Powered by LiPoly (11.1v) 2Amp/h Batteries Controlled Through Brushless Chinese 30 amp (10Amps) ESC - Comments: Like many clubs we suffer from weed problems at times. Airboats skim over the weed so can be sailed when the weed is prolific. Mobile Marine provide the hulls and top so construction is quick. Ken is at the controls at present but Barbie is throwing a hissy fit so will be strapped on in his place soon.
I am not sure from your original question if you were asking about sizing of conductors or on which type of conductor/insulation was the most suitable. The previous contributors have covered the size issue and here are a few thoughts on other features. From your comments it looked to me you were interested in having wiring in models you wanted to be around for a long time which is quite likely. I think my fireboat is over 50 years old now and is still stuck to gether with the original glue, but has had a number of up dates to its internals from very messy diesel to brushed dc motors. Most reasonably priced wiring is made from copper or tin coated copper wire if you need to do a lot of soldering, with pvc insulation, if pvc is irradiated this gives it a longer life. As far as I can see from my house wiring, so long as it is not flexed, ordinary pvc insulation lasts a long time, but does become brittle. In the defence/aerospace business since the second world war there have been various exotic systems used ( up until the end of the war rubber was the general insulator which did not last very long until it perished ). Various ones being silicone rubber internal insolators covered with glass fibre woven covers, this is horrible stuff to deal with when stripping, vynel with a woven nylon covering being another. With the advent of irradiated pvc and ptfe these were totally replaced. Ptfe is a very good insulator and is very stable and not attacked by any common liquids or solvents. Due to its good insulating properties the thickness of casing can be very thin, the problem with it is it is difficult to strip so you have to have a good pair of strippers. Another option in a model boat installation would be to use varnised copper wire like that used in various electrical items, solenoids, transformers etc. then stick this down on to a bed of epoxy resin and then add an extra coat, a bit like a fitted p.c.b. I have never done it but if it was well done could look quite interesting. If the radio side is a major consideration the above is not very applicable as, as has been said by others the choice is largely decided by the equipment you acquire.