I've owned an Rx7 before and have done a few rotor rebuilds with the help of friends in the past. And if you've ever actually noticed, despite how much i thrash the hell out of my cars, NONE of them have ever had a serious engine/gearbox/diff issue. I take care of my cars, they're serviced more often than most people, and i can swing a spanner pretty well.
legit can't just hold on with bars, have to grip the tank with your knees otherwise once the power comes on you slip back in the seat...and weight over the rear wheels once the powerband comes on is something you definitely don't want haha