Andy
I have a tach on my racing kart but I'm to lazy to put it on the bike maybe I should just for grins and yea boy my engine is singing wide open more than likely over 6500 rpms. I must of got a good one or the ports were just right or what little changes I did to it, I don't really know. I put my bike beside Ilikeabika's both kits from the same seller and both are the same size and I can spank him for top end. I know mine revs very quickly this one sounds like a motocross bike engine but I'm not kidding one bit on top speed I used a garmin gps and that is what it recorded for a top speed on all the testing. This engine is the one with the wrist pin that to me looks like its about to turn into a universal joint very sloppy on the wrist pin. The cylinder clearance is very tight I don't remember right now but its listed on the tear down post. So I need to repair it before it spits its guts out I don't want to loose this engine to the God of speed. Wish we lived closer I would sure let you try it out. This Bicycle scares me when it goes that fast I have too many things racing through my mind about whats going to fail and how bad its going to hurt when I start eating the pavement because the bike is being pushed beyond that its designed to do if you know that I mean. I do like the just off idle cruising around 15 to 20 mph. which I think is just right on the bicycle. If I want to go faster I'll ride the Harley which does not scare me going fast on like the bicycle does.
Norman

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