argggh revo motor heat

ok the most i hit before i ripped a wheel hex was 165 with a temp gun. but i recorded temps of 65 over an over how do i get accurate readings i was close enough but got different temps the difference was 100 degrees do i sand the shinny motor or paint it white?

and also how do you stop hex ripping i have talons with aluminum hexes i have smaller bolts than stock to hold on the wheels do larger bolts help

love this hobby i only break stuff when i have friends watching
hard to get them addicted