Need help wit cooling...have a race on sunday

[porschefan911]

i have a 19 turn motor and usually i run 5 laps in a race...always on the second lap my boat stops because one of the motor wires (plus) keeps unsoldering because of high temperatures on the motor head...my wires are slodered directly to the head. I have a cooling coil for the body of the motor but i guess thats not enough. Whats the best way to cool a head without fusing anything up (i.e. if i attach a metal tube to both of the places (i dotn noe wut they are callled) where the wires are soldered and if water passes thorugh the tube wont it short someting oput?) please help me and also is it possible to cool botht he body and the head if my intake hole isnt that big. plz help...thanks


Porschefan

[MikDee]

Put a metal tube on each motor terminal, and attach a hose between them,, no metal to metal contact.

[n.h.schmidt]

MikDee is right .Cooling the motor terminals will help cool things. I do beleive you need to find out why you are getting so hot. If you melt solder in two laps you will soon smoke that motor even with water cooling. Could you be over proped? If you are over proped you will only go slower and burn things up. n.h.schmidt

[porschefan911]

what does a comm lathe do ? i finished doing the cooling

[BoatDoc]

a comm lathe is for "re-truing" the comm on an electric motor. the comm is the part of the armature that the brushes contact. comm lathes are also $$$, the ones i've seen are $200 and up. that's the reason i don't have one myself! anyway, over time the comm will start to wear. so, every now and then the motor is disassembled and the armature is placed in the lathe to refinish the comm so that it is nice and smooth and pretty and all that good stuff.