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>> Home > Tags > water cooled

water cooled
motor cooler
cooling
interchangeable
36 rater model yacht
ahc waterson b444
blackwater
salt water
water jacket
water line
water proofing
water pump
waterline
waterproof
water cooled
Vosper by Biscuit Sub-Lieutenant   Posted: 15 days ago
Well this started off brushless but it had no soul or character, I bought an Os 40 fourstroke and converted it to be water cooled, I then made my own reverse gearbox and clutch assembly and fitted a water pump so the engine will keep cool while stationary. It has nav lights and a working searchlight that I can move while running.

20th Scale ELCO 80ft PT boat part 9 by jbkiwi Lieutenant   Posted: 2 months ago
I would check out the water cooled back plates for the out- runners as they will possibly run real hot if at all loaded up without cooling, unless you have fans like aircraft propellers (even then and in open air they still get hot!) I would look at this seriously to avoid cooking your motors. Hobby King usually has various cooling parts, or EBay, Aliexpress, Banggood etc. Bit late now I suppose, but water cooled in-runners (around 2000kv 28mm diam) are a better idea for boats. You can buy in-runners and water jackets to fit them as I did but they need flushing after use with CRC or similar to avoid rust, (I'll be copper tube wrapping the next lot, then there are no worries)

ASR 64ft R/C VID 2 by jbkiwi Lieutenant   Posted: 2 months ago
Boat is Scratch built 36" British Power Boat 64ft High Speed ASR Launch which belonged to the RNZAF. The launch was one of the 22 built and was shipped to NZ in 1940. It was the only one of its type in the Southern Hemisphere. Model has twin motors, ESCs, sound units etc. Has remotely switched water pump for water cooled brushless 2000kv in runner motors and remotely switched lighting. Uses 2x 2200mah 2s LiPos for drive and 1 1800mah LiPo for the pump (also a separate battery for the LED lights. Boat is built with strip planked balsa on ply frame and fiber glassed. Deck is ply, wheelhouse is varnished balsa. The colour is as it was for most of its time in the RNZAF . Took about 5 years on and off to build and finished it last year. (please ignore the time date - can't get rid of it .

EarlyVosper M.T.B by Simplas by boaty Admiral   Posted: 2 months 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

S.H.Grainger Formula Powerboat by vortex Sub-Lieutenant   Posted: 2 months 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

Painted outside by CB90 Fleet Admiral!   Posted: 3 months ago
Finish painting and adding some stickers, and a couple of pictures of the real thing. Fitted Motor in a water cooled jacket and motor mount. The motor is a 3650 and is rated as 3060kv Max Power: 1300W Max Voltage: 19V Max Amps: 68A Shaft Diameter: 3.2mm Shaft Length: 15mm Connector: 5.0mm Banana Connector Net Weight: 181g Servo fitted sideways via rubber bellows to external rudder fixed to transom.

Lifeboat plans by Westquay Fleet Admiral!   Posted: 4 months ago
Spitfires in this case are kneeler o/b powered vintage race boats. I thought I had 2 on the go, one for me and one for someone else, but I just found one! Oh well, one's enough. The dollies are needed to look like they're driving these things. They accept 1/6th scale dollies and I even have a suit of clothes bought off ebay for him! I bought an outboard motor from Hobbyking without fitted motor for bugger all, but now see that the same thing is £45 quid without brushless, which needs to be a 28mm watercooled inrunner. I'm going to need one of the those to fit the shaft and all that, but can only find one for 31 quid. It seems HK have been upping their prices lately! Do you have any reccomendations for where to get such an animal a little cheaper? I need the motor, I now realise, to build the dummy Godiva casing round it. It's supposed to be around 2300Kv, but the only ones HK have are more. Is that very important? Martin

Spektrum, new, useless... by Westquay Fleet Admiral!   Posted: 5 months ago
As reported elsewhere, I have today received the FlySky RC set and it works...perfectly.....straight outa the box as it's PRE-BOUND! And my dear bride has let me have it before my birthday. Although I still have to wait for the Crash Tender Yeoman fittings kit! I would like to use something old in the Crash Tender as it is old itself, so I guess I'd better have a look at your circuit diagrams Doug,as far as suppression and even ESCs are concerned. I have found 3 ESCs today. One I knew of and 2, WITH their instruction in best Chenglish that I had no memory of! Water -cooled too! I'll send you a photo of them. Cheers, Martin

H.M.S. BRAVE BORDERER by RHBaker Fleet Admiral!   Posted: 5 months ago
Decided to retry with the 2S battery and the original scale style propellers. Concluded that the speed is fine, especially in the windy conditions encountered and in a small pool that limited acceleration. The model had a very flat plane, must adjust the transom flap angle to see what effect that has. The forefoot did not rise much from the water surface. Was frustrated by the “stutter” referred to in the last blog, noticed this occurred on the two out shafts only and when the starboard was operated after the port was running. Swopped the starboard motor over with the centre one to see what effect it would have. As started to remove the motor noted that a connector was not tight and that the screw had corroded. Exchanged motors, removed all connectors then cleaned and refitted using a water resistant lubricant. The stutter seemed cured. Another lesson learnt, when dealing with these high currents every connection is tested and all defects exposed. The opportunity to retest using a 3S battery arose so installed it, all worked fine on the bank. Put the model in the water and a major short occurred. 2 fuses blew and about 6” of wiring melted and burnt through the insulation. At least there was no hull damage! Did an inquest and, apart from the damage described, also found the starboard ESC and motor had failed. These were the ones where the “stutter” originated, but cannot see any correlation between the two problems. Discussed the model with some of fellow scale modelers and concluded that the 4500kV motors are unsuitable for the scale propellers used. Every suggestion points toward motors in the 1 – 2000kV range. As now needed to obtain a new motor and ESC, decided to reequip both outer shafts with 2000kv motors and water cooled ESCs. Felt modifying these outer shafts would allow assessment of this new drivetrain combination, could then decide what approach to take with the centre shaft. Due to the mounting and driveshaft arrangement, the choice of motors was restricted to 28mm O/D with a 1/8” shaft size. Unfortunately, suitable items are on back-order from Hong Kong, so there will be no further updates for a while.

Brushless motor selection by canabus Fleet Admiral!   Posted: 5 months ago
Hi robhenry What volt battery are you running at present ?? 12 or 24 volts. If 24 volts those motors spec at 24,000rpm. Power is 511 Watts on 24 volts. 24,000 divide by 14.8(4S Lipo batteries) equal 1612 kv. So the closest motor would be 1700kv, eg water cooled 3660SL-1700kv which has a 5mm shaft and 44mm diameter with a length of 60mm( from Hobbyking). Power rated at 1800 Watts on 6S, so it would be lower than that. But if you are running 12 volts on the Graupner motor it would be about half the rpms. These brushless motors are far more powerful so check out the specs on the motors you are looking at !!! Canabus

Paint job by CB90 Fleet Admiral!   Posted: 6 months ago
Installed hardware used brushless 2860 4050kv motor with water-cooled mount and jacket, kept prop-shaft at a low angle. It drives really well to the extent that its too good to race so I have started again with another boat for racing.

It's a sad day!. by Novagsi0 Admiral   Posted: 6 months ago
If you see on my list above after the engine size if a D was noted its diesel and all these engines were for boat use and water cooled. However my father did make any parts needed so conversion to water cooling jacket on an engine was no problem if needed. Stephen.

It's a sad day!. by stormin Sub-Lieutenant   Posted: 6 months ago
Ian, I thought all ED where compression ignition (diesel) so not sure what yours could be. I still have a seagull (1cc) hunter (2.5cc) and a sea otter (3.5cc) I believe that the sea otter was the only engine ED made specifically for use in boats (water cooled) because the flywheel was at the opposite end of the crank eliminating the need to thread your starter cord under your prop shaft and u.j. Norman.

It's a sad day!. by IanD Sub-Lieutenant   Posted: 6 months ago
Someone mentioned ED motors! My Dad's old Sea Commander had one before I converted it to electric, but I still have it (in a box on the wardrobe!) Can anybody tell me anything about it? It is marked as an ED MK4 with what looks like a serial number of 4G147. It is water cooled and has a variable throttle. I cant see how the ignition worked but it has a large tug-start fly/pully wheel on the drive shaft. Any info gratefully received. Ian

47" Fireboat power question by rolfman2000 Fleet Admiral!   Posted: 7 months ago
I have a 47" classic Fireboat which I would like to use my G-60 500kv electric motor with a 6s Lipo battery and a 120 amp watercooled esc. I wondered if anyone could give me anyone idea of what prop size to start with experimenting to give best power anyone and endurance ? I am told the G-60 is the electric equivalent of a 10cc glow engine, so what size would go on that might be a start. Thanks in anticipation, Dave W 😊