Quote:
Originally Posted by chrismechanic
well no the reason a car has water cooling is the surface area on the engine can not dissipate the heat fast enough so the water carrys the heat to the rad.... which has 5 times maybe more surface area as you said. but i hope my motor wont have an internal temp of 450 degrees or so.  so im not going to water cool my maxx for that reason. if set up right it dont need water cooling  |
Maybe I should repharse that. I meant that water cooling was a bad idea for RC vehicles...
And yes you are coorect about the surface area to mass ratio of the engine to the radiator. The water is simply a method to transfer the heat.
I think the systems for rc vehcile need to have at least 4-6oz of water (or glycerol) to work well. Even a large heatsink with plenty of airflow will not drastically lower the temps of an ineffecient motor, the heat is being produced in such a volume that the external surface of the can cannot conduct it well enough, unless the liquid circulated around it was super cooled.