I ran my hot bodies truggy yesturday, it ran great up until I re-fueled, and started her up again on the box.

Ran for about 20 seconds then crunch! I stopped the engine and saw that the clutch bell has come off from the crank shaft and knew straight away that it was the bearings that gave way.

This has happened to me before, so I bought a whole new clutch, with shoes bearings, but now it has happened again, what could be the problem?