Motor heat - which way do I go with the gearing?

The idea behind undergearing generating more heat in the motor is that the motor is running near max RPM all the time since you'd be on full throttle more to get the speed you need with lower gearing. You can tell best if you feel you are on full throttle most of the time. If not, then gearing up probably will not make much difference. If it were me, I would get both a 13 and 15, so i could try them both.

J.

[lutach]

Originally Posted by 83gt

The idea behind undergearing generating more heat in the motor is that the motor is running near max RPM all the time since you'd be on full throttle more to get the speed you need with lower gearing. You can tell best if you feel you are on full throttle most of the time. If not, then gearing up probably will not make much difference. If it were me, I would get both a 13 and 15, so i could try them both.

J.

That's what I would do. I don't think 158F is that high though.

So if you motor is warm do you want to go to a smaller or larger pinion?

[VintageMA]

I already have the 13T and 15T pinions, so I guess I'll just have to try them both out. I'll just need the time - which lately seems to be a scarcer resource than $$$

The motor should be hitting about ~35k rpm with this battery, so I don't feel that's too high. As far as how much I was at WOT, the space I was was running in wasn't big enough for me to hit full speed - I was still gaining speed every time I had to brake.

It was the first real outdoor run with the 5S pack. I was getting it ready for the MMM, but the MM didn't seem to have any complaints - even pumping out a max of 1250Watts.

Maybe what lutach says is right, but just taking into considertion that it was about 50* outside and a bit damp - i'm wondering if that could translate into too hot when it 90*+ mid-summer.

[jhautz]

Those temps dont sound to bad to me. You can try going up and down like others said, but I wouldn't worry about it. It all sounds very solid to me. At least nothing to be worried about.