mine would be easy to tip. You think "how could this ever happen ?" ... well you get thrown back slightly and can't depress the clutch. That is also why jetskis and most motorbikes these days have thumb throttles. If they are tipping over you can't release the accellerator if its a "twist" throttle. with a thumb throttle you can let if off while hanging on and being thrown backwards.Not many tractor deaths now, most have heavy front drive axles so don't flip as easily, safety cabs and ROPs make them safer, some people still roll round bales down the forks of a FEL, a windmill being carried on a FEL under a power line arced, two killed, always something. The quad bike has replaced them as the most dangerous farm machine. Those grey Fergies were easy to tip.