I guess it depends on what people's definition of "warm" is. I typically shoot for temps no higher than 50-60*F above ambient max. So, if it's 80* outside, 140*F is the max I like. For some, this is just warm. To me, that is hot. Don't forget, electronic components have a temperature derating factor; the hotter it gets, the less current it is rated to pass.
ok brian if your out there,how about a 6l,i was using the speed calculator and this motor has what i want,but will it get hot,going to try 18 tooth with 2 cell,what do you think,i value your opinion,thanks