Ditto what he said..I noticed that after installing an r1 wurks 30mm fan my motor temps were 30 degrees cooler! It doesn't have to be hot to make power, that's not how motors work as far as I know. People will gear up... Meaning they will go to a 33t from a 32t if the temp is cool enough and allows it. The lower the fdr is the harder the motor has to work and will generate heat.