tearing my hair out now, just rebuilt revo 3.3 yet for some reason when its on the ground not running you cannot push forwards or backwards (brake isnt on) but if u pick it up either end and push it rolls..
then when engine running and i press throttle engine revs car doesnt go anywhere, but if i put car on stand so all wheels are not touching anything wheels go round when car is reved up...
any one any ideas on what i am doing wroung