It's had roughly 3 hours hard use over the weekend, what with mates wanting to try it out etc ( one guy being 6ft 4 tall and close to 18 stone). It seems to cope fine. It's not overheated, there's an engine driven fan on the motor. It's now had its shakedown period and as you can see it does the job far better than even I expected. Also being a 2 stroke motor it's far more likely for the piston rings to go after quite some time. Both of which are easy to source and fit