Refer to this post:
Most commonly broken thing on Savage...
http://www.rcuniverse.com/forum/Most...2578634/tm.htm
Just recently I broke my motor mount and engine crankcase from jumping a pile of sand the size of a Ford Excursion and landing really bad. I think I broke the case mainly from the abuse I put the truck through but also from heat weakening the case because it happened right at the end of the tank and I had run the truck through about five tanks that day. So I bought a new crankcase for $30.00 and the aluminum heat sink motor mounts $30.00 and we'll have to see if that helps.