well i have been looking at these r/c again and the shengi hummer did some more research and i think i will scrap the idea , they look great and all and the price is good i just dont whant to spend what i saved on rebuilding it with hpi parts , there seems to be a lot that goes wrong with these r/c from reading the threads at r/c universe both on the king motors and shangi .. everyything from gears to A arms to pull starts and even poor quality plastic wheels , so onward and upward ..