Originally Posted by chasingthepack

with just a fan i was getting temps around 100c i then made a shroud from old bodyshell wheel cutout arches to keep the air just on the motor,same track same conditions im now getting temps of 80/85c,im using a 40x15 mm fan ,its a 5v so when run direct off the battery it really moves some air,been using the same fan for 3 months now still works fine,id go for the 40mm fan as its a better size match for the motor