Depending on what voltage you intend using governs what gearing you should use commensurate with size and weight of model and prop size , IE small boat and prop ,low voltage direct drive would do. As you go bigger then consider gearing.Bear in mind the torque produced by the drill. You could build a large boat with a fine turn of speed using that motor. The thing is there are so many possible variables you could experiment till the cows come home. The thing is how big a boat can you handle without putting your back out. LOL. If you remove the existing gear and replace it with one secured by grub screws and a "GearBox" with easily changed cogs you can achieve something suitable. You shouldn't need cooling .Remember the drill had none and your motor will have free space round it in the hull. If you decide you do want cooling annealed copper tubing can be wound round the can and one of the plastic tubes used to couple this to the scoop and the outlet. One way of making a scoop is a length of tubing with a slot cut in it and a cap soldered (or glued depending on material) on the end when in place under the hull the cutout will face forward. Preferably in the prop wash.Or buy a ready made scoop from a model shop. Much simpler as the mounting method will be incorporated in it already. Here is a page of suitable shops.--https://www.google.co.uk/search?q=model+boat+shops&npsic=0&r... Good luck. P.S. Join a club. Youll get loads of help from the other members.👍👍
Thanks Doug. I bought some primer but can use on another project. I will find the filler primer recommended. I bought sanding sealer also for when I am happy with the preperation. I have a 24litre tank compressor and special regulator and moisture bottle in the line. I also bought a second airbrush with a slightly larger jet. I know that you are in Germany, but would I find the acrylic paint in large quantities in a decorating shop? Professional paint outlet? Seen tiny pots in the modelling shop but I would need loads of those. 😊
Hi MB, can only say what I have which works and I ain't set the house on fire yet 😉 Not surprisingly for someone living in Munich both mine are from German companies! Robbe Power peak Uni 7 and Graupner Unimat 14. There are later versions of both around nowadays but you can still find these on Amazon / Ebay etc. Both of them have automated programmes for various Lithium types, NiMH / NiCad (not recommended these days!) and SLAs. Robbe is now defunct and their Marine stuff taken over by Graupner and marketed as RoMarin! Pics also show the Balancer Adaptor Boards, necessary to connect the balancer cable of the battery. This ensures that each cell is equally charged 😊 I also included in the pics the little battery Capacity Testers I use. They cost around a tenner and are very useful for checking the capacity before a run or charging, as well as the voltage and capacity of each cell, which gives an indication of the battery condition. I found some duff cells with the tester in a few batteries I'd only just bought 😡 When looking for / buying a charger look also for a LiPo Safe bag to charge them in. E.g. LiPo Guard. Charger may cost 50 quid upwards depending on how many charging outlets you want and how many Bells & Whistles. But I get on well with these two 😉 I like the Robbe version cos I can charge two LiPos at the same time. Also in the pics are a few of the charging cables I made up with gold 4mm bullet plugs for the charger end and Tamiya and BEC (for my Plastic magic stuff!) at the batt end. Such adaptor cables are also available 'ready made' but I just like fiddlin' 😊 Hope this helps, Cheers Doug 😎 Nearly forgot! Can't say for sure what current your motor will draw cos I don't know all the other details, but a 40" boat will need some shove! So I wouldn't go below the 5000mAH if you want a half decent run time. A 40" boat can carry a bit of weight! And batt power is more useful than pure ballast 😉 Recommend a little Wattmeter to check the max current draw - see last pic. Basic theory! A fully charged 5000mAh (or 5AH) batt can theoretically deliver 5A for one hour, or 10A for half an hour and so on! Say your set up draws 20A with the 'pedal to the metal' then a 5000mAH batt will 'theoretically' last 15 minutes. Theoretically cos other factors are in play; initial charge state, temperature, internal resistance of the cells, cable losses etc. The latter is why I only use gold connectors! The higher the batt capacity the higher the price and weight. So suggest you start with the 5000 and see how (long) it goes. Then check the weights of higher capacity batts (and the bank account / management approval😉) Bon chance mon ami!
I tried one of these but couldn't get it to reverse the boat. Possibly not got the correct set up for the jet nozzle. It pushed a 30 inch fiber glass fast patrol boat very well, might try to sort outlet to give better control. You've raised my interest again thanks, Colin.
***** SOLD ***** I have for sale an unstarted Speedline 1/12 Severn Class Lifeboat Kit. Full set consists of all optional extras, including Bow Thruster. Not included: Motors and RC gear. Price £750 non-negotiable. 1/12 scale Severn class lifeboat The model in the photographed above was built by Terry Small for his mammoth article in Model Boats’ annual kit review, Dec 2007. Phil Locke built his on line so you can see for yourself what’s involved and what become of the model, now probably the most famous RC model lifeboat on the planet. (See www.philsrcmodels.co.uk). I am delighted to say that I now own this model and will be taking it around the shows during 2011. The kit builds into a top quality ‘museum standard’ model that you will be proud of. It is available complete or as individual ‘sets’ which can be bought separately. This means you can spread the cost of the kit or use whatever ‘sets’ you wish and make as much as you like from scratch. The model has an overall length of 58” and is 18” wide. The kit comprises of a number of ‘sets’, each of which can be bought separately. The ‘sets’ making up the full kit are as follows: HULL AND WHEELHOUSE SET £260 The hull and wheelhouse set comprises of three GRP mouldings, the hull, the main section of the wheelhouse and the inner wall of the wheelhouse. The hull is complete with the deck already moulded on and is strong and rigid, the way a big model should be. The bilge keels and rudders, both laser cut to profile from 5 mm Perspex are included as are the three trim-tab re-enforcing plates across the transom and the two exhaust outlet recesses in the transom. DETAIL SET £330 The ‘Detail Set’ is the very heart of this model and because there are so many parts, its impracticable to list every item covered. The set comprising several large sheets of laser-cut Perspex components, one sheet of acid etched Nickel Silver components and three sheets of acid etched brass components there are over 600 precision made items. Every part is pre-shaped with a high degree of accuracy ensuring a perfect fit throughout the model. The Severn class has over 1,600 stainless steel screw heads on show just fixing vent covers and closing panels and wherever one of these screw heads is to be found, a pre-drilled hole can be found, all 1,300 plus of them! Many items, such as the flying bridge windscreen frame, are made from acid etched brass to give them the inherent strength that such a delicate item needs on a model of this size. The Trim tabs are made this way but from heavy gauge brass enabling them to be used as the basis for working tabs. All the air intake and exhaust vents, brackets, plates, mast brackets and plates, flying bridge instruments and displays are included. The glazing for the flying bridge windows is included in the set as are all the Perspex covers for the instruments and display screens on the Flying Bridge, all pre-cut exactly to shape. A major feature of the Severn is the Hyab Crane that lifts the ‘Y’ Boat on and off. This is included and is made from etched brass and laser-cut Perspex. The ram cylinders and the ramrods are cast Pewter. The crane is strong and movable and forms a good basis for a working option. Included with the detail set is a CD containing lots of reference shots of a real Severn. CASTINGS SET £50 All the cast items on the model have been newly mastered and cast in either in lightweight resin, Pewter or Zinc where extra strength is required. The set includes the winches, cleats, fairleads, bollards, deck vents, valves, escape hatch spray guard, deck vents and forward vent air vent shields. New correct pattern life rings have been included also. The Anchor recovery davit has laser-cut Perspex detailing. The fisherman’s anchor itself is included in the casting set even though it is made from laser-cut Perspex. The valve handles and anchor flukes are also in the casting set, even though these too are Perspex. (I had to put them somewhere)! The set includes a cast resin Radar scanner. HANDRAILS, STANCHIONS & KICKING BOARD SET £70 The Severn class lifeboat has ‘kick boards’ bonded directly to its deck which carry the two ball stanchions and the hand railings. Our set includes extruded section aluminium kick boards, pre-formed and shaped by hand to fit the deck contours. They require only trimming and fettling before being glued directly to the deck. The “impossible to make” long curved kickboards that follow the deck steps are included of course. The two-ball stanchions are scale and are CNC made from brass. The triangular mounting brackets are made from etched brass and brass tube. The rectangular plates for the hand-railings are included in the set. 12 or 14BA bolts are used to bolt them directly to the kickboards. These are not supplied with the kit but are available from us should you need them. RUNNING SET £60 The Running Set consists of two short prop-tubes carrying the prop shafts through the hull and two A frames with stainless steel legs. Both tubes and A frames have twin bronze bushes fitted. Two ‘scale pattern’ 4 bladed brass propellers are supplied. WINDOWS SET £75 The window set is again a kit in its own right and contains all the parts required to build all the wheelhouse windows. Each window is assembled from five separate components, all made from laser-cut Perspex. The finished windows are ultra realistic and are a major scale detail feature of the model. VAC FORMING SET £10 This sheet of 1mm thick High Impact Polystyrene vac formings comprises of all the inset boxes in the wheelhouse, the four triangular mountings on the Wheelhouse roof for the ‘Y’ boat, the fendering protection plate at the bow roller, the radar box motor box, four round fenders and the four life raft boxes. HEXAGONAL HEADED SCREWS SET £78 On the full size boat there are a lot of hexagonal-headed stainless steel bolt heads left unpainted and on full view. Mostly, they secure panels and vents along the wheelhouse side, engine covers and the like. These are an important feature of the model and are represented by specially made dummy hexagonal headed screw bolt heads. They are machined from brass and then Nickel plated. These enable you to achieve coloured panels with unpainted bolt heads with amazing accuracy and relative ease. FENDERING SET £40 The rubber fendering surrounding the edge of the hull is especially made for Speedline Models and is of true scale section. Made from the same type of rubber as the real thing, it even smells right! BRASS ROD SET £50 This is a collection of various size annealed (bendable quality) brass rod for the handrailings , mast, grab rails etc. Y class RIB £44 The ‘Y’ boat is an essential part of the Severn and has been modelled as a complete boat, not just a tarpaulin covered one. The model is fully detailed and is a scale lifeboat kit in it’s own right. Many kits have actually been RC’d themselves. Full Kit £1038 Carriage P & P in mainland UK is £20 for the kit. Please enquire about overseas shipping cost. Postage for individual sets bought separately is charged at cost..
Illegal to have trailer on car tyres, something about ply rating for trailers over 250kg unladen and carrying capacity. If you check with tyre outlets they will explain. My trailer weighs in at 293kgs unladen and has carrying capacity of 1750kgs. Cheers Colin.
Just to update on the Technobots sound units. Alan Bond the original designer was selling under his Forge Electronics outlet. He has now, just passed on the future sales to www.scalewarship.com run by John Wills. John is in the process of adding the units to his on line shop and hopes to be able to supply in the near future. The units are very good and reliable and can produce very realistic sounds in line with motor speed. A separate 20 watt amp and 8" speaker on a baffle board works well for me in my Tugs.
Brilliant, I have been using them for years, you can sign up for their news letter with their daily deals and stuff. A quick question to any sage, as I am doing a repaint of the hull, I thought I would fit a water pick up, which I have done, but where is the best place to fit the water outlet on a Sea Commander? To all a Happy Christmas and a prosperous New Year
Finished “Costa” planking today and have put in most of the edge strip (need more strip, model shop Friday!). Jobs to do before I start the superstructure, finish laying out the RC components, fit rudder parts, make battery tray etc. Put in a 1/4 square strip around deck opening to prevent water ingress. Couple of coats of resin inside radio bay, 1 more outside, sand and prime. Sand, stain and yacht varnish deck. One question on a water pick-up as using a water cooled ESC! Outlet will be in the transom, does it matter where the pick-up is located?
the scoop should be fitted behind the prop so prop wash is driving water through it whenever the motor is running and the cooling coil fits around the motor join the two up with fuel tube etc. then the other end of the coil connect to an outlet ( unless you want a self filling boat) http://www.cornwallmodelboats.co.uk/acatalog/cooling-coils.h...http://www.cornwallmodelboats.co.uk/cgi-bin/sh000029.pl?REFP... As to sitting on your boat you could put it in the water and get some one to hold it while you run the motor up and watch the current used. closing off the cooling vents to an electric motor not used in a speed model shouldn't be any problem if you have the correct prop an electric motor should only get hand warm. The temps you indicate would have burned out your motor even if there had been no covering over the motor at all. With an electric ( brushed) motor the more you load it the higher the current flow and the hotter it gets. Stall current tend towards infinity you have what I think is a 60mm prop and that's a BIG prop being 3 bladed makes the situation worse since there is increased blade area against a 2 bladed prop. If you intend to use that prop then get a motor man enough to swing it.
The hobby doesn't have to cost the earth I made some ladders from welding brass filler wire, and an exhaust outlet from a draw knob I found whilst walking to the shops. Also done some additional planking using stirrer sticks from costa fortune coffee shop. (My son grabbed me a hand full enough for a life time's modelling).
Re Technobots Sound Units- "As part of our review into the product ranges we stock, this engine sound unit is no longer available from Technobots. We have been the retail outlet for the excellent engine sound module designs of Alan Bond of Forge Electronics for many years and have proudly supplied over 1,000 of these units to modellers around the world. The good news is that Alan is going to continue production of the programmable sound unit so please visit the Forge-Electronics website for pricing and availability. Our rather popular and well respected range of single voice and combo engine sound units have had a makeover! They still have the same great sounds but are even more user friendly." https://www.technobotsonline.com/combo-engine-sound-unit-mk2... Doug 😎
Hi Dave, I'm sure that Bondaglass is excellent. Unfortunately they don't have a distributor in Australia🤔 Shipping cost quoted to Germany is 11.95 which doubles the price of a can. To Austria, just down the road from me, they quote 33 pounds!! For Australia the info is 'Contact us'! I checked that Deluxe materials have outlets in Australia and found two 😉 Cheers Doug 😎 PS lovely woodwork, would be shame to hide it 😆