If you look at the aero of a board, I would imagine that the separation and stagnation zone at the very rear of the board would end up getting more eddy air, possibly cooling the motors more.
However, depending on how the enclosure is designed, the motors under the board may get more straight through streamlines, hard to say. Overall I would imagine the rear would have marginally better cooling.
Maybe in the end it doesn’t matter too much, my motors don’t really get super hot. In addition, if you have metal motor mounts they help to soak up a lot of heat. In my build, the motor mounts and even the entire truck work to keep the motors cool, acting like a giant heat sink, whereas the original Enertion mount doesn’t transfer heat as well.
I wonder if adding thermal paste to the surface between my motor mount and motor will help much. I notice in my configuration the mount doesn’t heat up much despite the motor burning my finger tips off.
The anodization of the mount and not perfectly flat machined surface of the motor where it screws to the mount probably contribute to this low heat transfer ability.
Back to the 50mm motors though I wonder how much of a power difference there actually is, I was thinking about doing them on a build for another client because they have such a tight budget and are quite light in weight.
Yeah I think so, and somehow they still manage to overpower 6355 motors which I really do not understand, seemingly anyway, according to some tests I have seem by Jun Kami on Youtube
I wonder if their current draw is just that much smaller. I have heard that 10s4p will only get like 12 to 15 miles on one of our boards, I can’t attest since I’ve used lipos this whole time but maybe that is true. Eventually I would switch to liion cells but I don’t have the cash for 60 30T’s or 60 30Q’s
I have used 50mm motor for a long time, wouldn’t recommend for anything more than flat, they get extremely hot, even more if you don’t have a temperature sensor installed and let it cook
Comparing a 6355 to a 5055 190Kv motor, the first has around 18 mOhms internal resistance, the latter 40 mOhms, so for the same current (torque) you will have roughly twice the heat loss, in a motor that has less mass to soak the heat and less surface area to dissipate it