In last weekind, i go with my friends to play our little toys, and the temp outside was about 10-15, and a breeze air, oh man, it was so cold. However, i didn't bring my car (i was the cameraman ), the others try to start their engines. Some engines start but their racing performance was so poor (problems with tuning, the temps of the engines were at most 100 celcious. Other engines did not start at all. Oh man, the air temp is a MAIN "engine not pull" matter. I was happy that i didn't bring mine out there. I store my nitro cars for the summer now and i keep my big scale stand by