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Having built (well still building!) a number of models with a traditional prop shaft and then one with a stern-drive (all Faireys including a Swordsman) I wanted to do something different (for me).
I'd already produced some drawings based on the Lesro Stiletto/Rapier hull and various more modern superstructures and chose one of those and altered the drawings to suit the water-jet. Bit more complicated in some ways but hopefully it won't be too bad and has the advantage of having the drive, steering and motor all as one unit.
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Thanks ChrisF for this information and photo. When you make this model I will be very interested because I have never made water jets and it seems like a very complicated matter.
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Alessandro, like Doug I don't use water-cooling on my builds, even though some of them are quite fast. But for a future project I'm using a water-jet which uses a brushless inrunner motor and comes with a water-jacket and take-off point on the drive for the water supply so it makes sense to use it especially as the motor will be working hard sometimes. Also be good to do a water-cooled installation for the first time.
Anyway, photo shows the water-jacket fitted to the motor.
Chris
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Glad to clarify Alessandro. Sorry, can't help you with a photo. As posted here before I have never needed one๐ If the ESC, motor and prop are properly matched a cooling jacket should not be necessary on a scale model. As I said; I don't build racing boats. I'm not looking for speed records๐ Ciao, Doug๐
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Young at heart ๐ Slightly older in other places.๐ Cheers Doug
Thanks Doug, I could imagine something like this but it's better to clear up any doubts with your explanation. If you have a photo that's even better. Just out of curiosity because I've never seen them for small electric motors.
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OK Alessandro, Let's start with 'jacket'. Denk an eine Jacke. Du ziehst sie an, um dich herum. A 'water jacket' ist eine Jacke fรผr E-motoren๐ which forms a heat sink around the motor with water flowing through it to carry the heat away. They are often made from coils of brass or copper tube tightly fitted around the can of the motor. So obviously you can't do that with a brushless outrunner!๐ฎ Alles klar Herr Kommissar? Cheers, Doug๐
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Young at heart ๐ Slightly older in other places.๐ Cheers Doug
Hi Doug and Roy, I have carefully read your assessments of the problem and your advice. I think I understand almost everything; the only thing that I certainly mistranslate because it leads me astray is the "water jacket". What is a "water jacket"? Sorry if the question is trivial but google translate doesn't help me much in this case.
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