Gearing an 8xl Maxx - Wrong Motor?

[hemiblas]

I run a 7XL geared 20/68 on an emaxx and it runs hot no matter what you do. I run mainly on the street, so its low stress compared to sand, dirt etc etc and it has gotton up to 180 degrees. I added 2 40mm fans and a heatsink to keep the motor cool. It is working for me and the motor doesnt go over 145.

If you check my picture, that was my first attempt to keep the motor cool. 80mm fan on a cheapie heatsink. Now I run 2 heatsinks with 40mm fans and it works much better. Even getting air over the can isnt enough. You really need a good heatsink and enough air through there to cool it down.

5s on a 9xl or 6S on a 10xl would be a better choice to keep the amps down and keep the motor cooler.

[Sorb3t]

Ok, So I've just ordered a TeknoNeu 1515/1Y/F motor. Depending on gearing, this should be just right for 4s from what I'm hearing? and depending on gearing, I can do 5s if I want to later? What I would like to know is what temps I should shoot for in my setup. I don't want to run a fan but I don't want to hurt my new Neu. Without a fan, geared for ~40-42 mph, what kind of temps should I expect. I have a temp gun to check it. Thanks.

[E-fanatic]

Originally Posted by hemiblas

I run a 7XL geared 20/68 on an emaxx and it runs hot no matter what you do. I run mainly on the street, so its low stress compared to sand, dirt etc etc and it has gotton up to 180 degrees. I added 2 40mm fans and a heatsink to keep the motor cool. It is working for me and the motor doesnt go over 145.

If you check my picture, that was my first attempt to keep the motor cool. 80mm fan on a cheapie heatsink. Now I run 2 heatsinks with 40mm fans and it works much better. Even getting air over the can isnt enough. You really need a good heatsink and enough air through there to cool it down.

5s on a 9xl or 6S on a 10xl would be a better choice to keep the amps down and keep the motor cooler.

Dang I just ordered a 60mm 12 volt fan for my feigao motor I am going to see if it will last hooking it up to a 4s lipo(it all that I got) I hope it help enough to last until my castle combo comes in!