not sure what you're looking for here. It won't be bad as long as the temperatures don't get too high (I don't know what "too high" means for brushed motors, lol). That is the best to tell what gears to use, temps. As for the short shaft, that is a problem I ran into as well, the titan shaft is really long, get used to the shorter ones, as they were on 3 of the 4 motors I used in my slash, the only long one being the stock titan.