Wow! I had one of these brand new in the early 80's. First thing I did was take it up a steep powerline trail. I got to the real steep part, and having never rode a 3 wheeler much I was sitting down as I approached. Well the front wheel started to go up, pointing skyward I panicked and let off on the throttle. For some reason the engine died I think and I started to roll backwards down the hill. I first hit the front brake but with little weight on it it just skidded. Then, as the speed was increasing rapidly I grabbed the rear brake and the next thing I know was that front knobby tire was right in my face as the machine rolled right over the top of me on its way to cartwheeling down the hill and into the trees.. I was SO PO'ed! I got to the the machine, and drove it home swearing I was going to sell that MF ASAP! But by the time I got to the driveway I was starting to have fun with it and kept it for many years..