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>> Home > Tags > motor

motor
540 motor
brushed motor
brushless motor
johnson motor
motor cooler
motor mount
reversing motors
torpedo 850 motor
torpedo motor
twin motor
motor
EarlyVosper M.T.B by Simplas by boaty Captain   Posted: 4 hours ago
Hi Onetenor Fuji 15 was a good glow engine which I don't think it is manufactured any more. Aero version max B.H.P was just below .40 when tested. If it was in a model aircraft it would have been around .20 to .25 depending on prop size which was good then for a small capacity glowplug . Marine versions when on the water put out a little less and the water cooled jacket was never as efficient as the finned cylinder jacket of the aero version. My two Aerokits boats, the Sea Commander and the Crash Tender are powered by single Speed 600 motors running on either 8.4 or 9.6 volt Ni Mh batteries. Performance is equal to that of marine diesel power such as the 2.46 Ed Racer and D.C 2.46 Rapier, the latter I used to watch in the fast steering events in the early 1960s at Fleetwood and Coronation Park in Crosby just outside Liverpool. Taycol powered versions would be obviously slower due to the additional weight were far more reliable and you did not have to put up with injuries from excessive use of a starting cord with kids watching and "extracting the urine" shouting "why wont it go mister". Boaty

EarlyVosper M.T.B by Simplas by RNinMunich Fleet Admiral!   Posted: 13 hours ago
"Maybe but ballast ,is ballast,is ballast. However it's achieved." Sure John, but at least a heavy battery is useful load and not 'just' ballast.😉 Have no idea what shaft power the Fuji produces (only know their excellent 35mm film😉) but the Taycol Supermarine is rated at 22.5mHP (22.5/1000HP) at 3.5A, 4000rpm. Efficiency 52% 🤔 so you have to stick twice as much electrical power in to achieve that! Sooo, given that 1HP = 745.7 Watts - And electrically P=IxV (Current x Volts) 22.5/1000HP = (745.7*22.5)/1000 = 16.778W so ~33.55W in. Thus if I = 3.5A they must have done that test / measurement at about 9.6V. The Supermarine also runs great at 12V but maybe not with max efficiency!? With a spec weight of 2&1/2 lb i don't even want to get into Power to Weight Ratio, although I measured Colin's motor at 947gm = 2.0877776229lb 😉 But then, some of the motor had corroded away As I'm currently renovating a Supermarine for Colin H. This makes me start thinking about rigging up a test jig so I can see what it actually produces!!! Always up for a challenge 😁 Got nowt else to do 😁😁 Would be useful for other motors as well if I can get it figured out😉 Happy fiddlin' folks, cheers, Doug 😎

Taycol Supemarine Resurrection by RNinMunich Fleet Admiral!   Posted: 16 hours ago
Hi Martin, Apropos mini Milling machines; this is the one I use. https://www.youtube.com/watch?v=qffdG_d2fJ0 https://www.axminster.co.uk/proxxon-mf-70-milling-machine-37... Pics show using it to mill my new Sea Scout propshaft to secure the grub screws in the motor coupling. I just changed the tool holder from collets to a proper chuck. I also bought the little machine vice which clamps to the table, and the dividing head. There is also a CNC (putah driven version - ain't got that far yet, bit expensive😉) But this little job has served me well for several years now, very happy with it👍 I also use it as a precision drill press; e.g. to make the new phosphor bronze brushes for my Taycol target renovation. See last pic. Have also recently used it to make the little gearbox so I can fit the renovated Taycol Target into my ancient Billing Danish fish cutter 'Gina2'. See, I don't just do the 'Grey Fleet', sometimes I also mess with wood😁 Cheers, Doug 😎

Taycol Supemarine Resurrection by RNinMunich Fleet Admiral!   Posted: 21 hours ago
Shucks! An I was hopin' you'd build me a little 4 cylinder diesel for me to run a brushed motor as a Genny for all the lighting on my ships! Or for the diesel electric propulsion on my Type 45. Now wouldn't that be cool!?😁 BTW Some of Nick Carters tips an tricks showed me how to convert one of my tools to something that'll do what I want! So, out with the Proxxon mini-grinder😉 Cheers, Doug PS It wasn't a wrong steer cos it led me to all sorts of useful 'stuff' and above all helpful info👍

EarlyVosper M.T.B by Simplas by boaty Captain   Posted: 1 day ago
Found on E Bay but sold in June of this year, a 42 inch kit of a Simplas Marine Construction Vosper M.T.B. It would appear that there are not many about now. I built one in 1972 and the kit contained a fibreglass hull with all fittings including the guns being in cast metal. Deck and superstructure were plywood and the boat was a model of an early Vosper as it had a very narrow beam and torpedo tubes were towards the stern. I fitted a DC Sabre 1.5cc diesel but had to add a lot of ballast which resulted in a sharp drop in performance. This was solved by replacing the Sabre with a Fuji 15 marine version glowplug engine . The boat was free running and as I was on an apprentice engineers pay and could not afford r.c.as I was having to support an ageing Mini. This was my transport from Ellesmere Port to the boating lake in New Brighton. If I had bought a Taycol Supermarine motor it would have solved all my problems as the battery would have been the ballast. Boaty 😁

Renovating my Aerokits Patrol Torpedo Boat. by boaty Captain   Posted: 3 days ago
I had an MFA Spearfish in the mid 1990s and it was powered by an MFA Marlin or should I say underpowered. The Marlin was a good motor but was not really suitable for fast craft such as a powerboat or fast service launch like an M.T.B. I understand that MFA did an 850 which was for fast scale type models but in the end I put an Irvine 25 I.C in the Spearfish. At the time there was a motor called a Buhler which I think was Swiss . I used one😁 in my Perkassa running on nicads which performed very well. For the Aerokits P.T boat there are a lot of suitable brushless motors around and running on lipos will certainly give you all the speed you want.😁 Boaty

Taycol Supemarine Resurrection by RNinMunich Fleet Admiral!   Posted: 3 days ago
Mornin' John, agree re chromite, but still don't know what chroDite is! I only personally own the one Taycol Target. I got into this whole Taycol business while I was renovating Dad's old Sea Scout last year and decided I wanted a bit more Oomph so upgraded it to a 1000kV brushless, which gives goods results on a 3S LiPo. See the vids I've posted of the the 'Sea trials' (Lake Trials!?). So I decided to use the Target in the ancient Billing Boats Danish fish cutter I'm restoring and converting from static to RC. Figured the Target would cope OK with the plodding pace of a fish cutter😉 BUT, I wanted it to be reversible without cumbersome external switches or relays as recommended by Taycol / Keil Kraft in those days. After surfing around a bit a found a website where others had tackled the same problem. Looked at their solutions and refined them slightly. All I do is rectify the pulsed (square wave) signal from the ESC with a bridge rectifier (4 hi-current diodes in a bridge form in one package), apply the + and - outputs from the rectifier to the field coil so that it produces a constant magnetic field just like the permanent magnet of a canned motor. The two alternating (pulsed) outputs of the ESC are applied to the AC (~) inputs of the rectifier, which go + / - or - / + according to the command from the TX, I apply to the brush terminals just like a normal brushed motor setup. The output of the ESC is a train of either positive of negative going DC pulses. Pic 2 the positive train on the scope. Pic 3 the negative train. The larger and wider the pulse the higher and longer the voltage is applied and the faster the motor spins. So called Pulse Width Modulation (PWM). The gaps between the pulses are smoothed out by the inertia (flywheel effect) of the motor, and anything hanging on it - like a prop and a few million gallons of wet stuff 😁 Hey presto, a field coil motor that runs forwards or backwards on command 😊 Main thing is simply to separate the field coil from the armature coil (i.e. brush gear) so you can control each one independently. No rocket science but highly satisfying when it all comes together and works on the pond. OK, I'll look up Mr Lynch, wasn't he the Sarge in Z Cars 😁😁😁 Cheers, Doug 😎

S.H.Grainger Formula Powerboat by vortex Chief Petty Officer   Posted: 3 days ago
Hi Steve im not sure now regarding motors as they have water cooling cans on but Surfury runs from memory a 1075kva motor Turnigy 160 A speedo watercooled on 2x2s 5200 lipo`s in series ie 14.4volts with 52mm mocom Alum prop approx 3hp. I think the Tornado has approx 2045kva motor same speedo + lipo`s x 50mm nylon prop both do scale speed to as fast as 40/61 IC and look great on our choppy water with just prop and rudder in the water. Both motors will take 6s if you like ballistic? All gear from Hobby king. Try the IC first, post some pics please

Rebuild starts by RNinMunich Fleet Admiral!   Posted: 3 days ago
Hi Peter, I wouldn't use ply at all.😲 Especially not for a powerful brushless. I only bought the Krick adjustable mount so I could scan it and then make my own from 2 or 3mm aluminium, depending on how heavy and powerful the motor is. I will never use the original wooden one. It was just a 'means to an end' 😁 Cheers, Doug 😎

lastest progress by teejay Lieutenant   Posted: 3 days ago
Hi All here is the last on the schenllboot S100 I have been able to finish the paint work on the hull and she is now ready for final coats of varnish and full reinstallation of the RC equipment , still a bit nervous about that, part of the installation instructions are indicating the red wires on two of the esc,s need to be cut , I think this is the switch wire so the you only need one switch to active the other motors . I will look in to that before cutting

Rebuild starts by MouldBuilder Captain   Posted: 3 days ago
Hi Doug. Thanks for the design. It looks really good and very adjustable. I have bought a 1485 brushless motor for the rebuild. A bit of a beast so I hope not too much. I think this is a lot more powerful than a 480 so do you think 8 or 10mm ply for the mount. Thanks.🤓

Taycol Supemarine Resurrection by RNinMunich Fleet Admiral!   Posted: 3 days ago
Hi Colin, my mini lathe I'm using for most of the work on your motor is a Proxxon FD150/E. Great for such stuff. Only minor drawback is that there's no auto feed. But then, you can't expect everything for sixpence!😁 So far I've been very happy with it, although it's a bit finicky with setting up the clearances on the cross table. Patience is a virtue!!!! I also have a much bigger Proxxon bought ca 20 years ago but it's seldom used now that I have the littl'n. cheers, Doug 😎 PS I'll have a look at the Oilites, may be handy in the future. But for your motor I'll make some 'bespoke' bushes - 1 Cos I love a challenge! 2 They'll have to be tailored to fit the shaft and to hide 'em inside the existing end caps. Hence 'bespoke' 😁 'Never mind the quality - feel the width'! Anyone else remember that hilarious nonsense!? Cheers, Doug 😎

Taycol Supemarine Resurrection by Westquay Fleet Admiral!   Posted: 3 days ago
My mate said it as Chrodite, with narey a hint of a pause, so I just assumed he knew what it was. I think it's effectively Admiralty brass, more or less. Not quite bronze, which is BLOODY hard! But ace bearing material. Goes brown but doesn't corrode further. He made hundreds of his own bolts from it, but had to sell the boat before he finished it. Bearings for a Supermarine? Mine has its original stuff, Just the end plates of Paxolin with felt oil pads held on with a pressed brass cap. It's worked all these years and there's not a thou. of slop. Amazing. I suppose though, mine never really got a lot of use in the few years I used it. Only odd weekends for as long as a pair of lantern batteries would last. Maybe 10 minutes each! Anyway, if it gets another working, great news. I'd like to see Colin's fleet of old codgers. I'd feel right at home Mind you, I sent off for a brushless ESC today and will have to get some batteries soon to test the motor. Its a tiddler, but it's 174 watts, so should work. Worth a try anyway as it cost me nowt. Martin

Taycol Supemarine Resurrection by RNinMunich Fleet Admiral!   Posted: 3 days ago
So Colin, Last instalment for today. just finished fettling up the armature and drive shafts. Pic 1: having flattened off the ends I used a centre drill to prepare the shafts for machining using the 'live centre' on the mini lathe. Pic 2: machining the output end. Pic 3: polishing up the brush gear end, this is where you can attach your fan Colin. As shown on the micrometer I stopped at 6mm, less 2/100mm clearance, and will make the bearing bushes to suit. If you want the shafts turned down a bit more for the drive coupling and/or the fan attachment let me know Colin. I'll keep the actual motor bearing sections of the shaft as it is at 6mm to fit the bushes I'll make tomorrow. All the best, Cheers, Doug 😎 PS Ain't never no not 'eard of Iolite neiver!😲 But then I'm only an igorant lectrickery engineer 😁 Learnin' fast with all this mechanical magicery! All good fun folks, and MOST of it actually woiks!😊

Rebuild starts by RNinMunich Fleet Admiral!   Posted: 3 days ago
Hi Peter, see attached pic for adjustable mount suitable for 400-480 size motors! I have one, but only used it to scan the parts so I can scale it for various size motors! 😉 If the size is right for your motor buy one from Krick, delivery always within 3 to 5 days. otherwise scale the pic to the size you want, print it and use it for a template to make your own. Cheers, Doug 😎