There is no way that is 220mph, I suspect that he has interfered with the the spedo drive gear. I used to ride bikes at silly speeds, and I would say it may only be half of what he was reckoning. The speedo is rising just a wee bit too quickly for my liking and with the wheel being up until "140 mph", it doesn't give you a good chance to assess the lower speeds are comparable to what we all know.