I picked up a pretty nice Maxi Sport MKII last week. The frame sticker says it's a 1.5HP. I cleaned the carb and realized it a 12mm bing.... Then I looked at the cylinder and noticed it's a restricted 1HP cylinder. Lame.
I got it running and it goes 23MPH on flat. I'm 6'2" 280lbs. So that seems to be pretty good for a totally stock 1HP Puch. I've ordered shift pucks and cover gaskets. I'll check to see what the gearing is in the trans when those come in. The case number matches the frame, so I'm hoping someone just put a 1HP top end on the 1.5 ZA50 trans.
I have a good 14mm Bing carb, a new Techno Boss pipe, and a new treats 70cc kit on hand. The 70cc kit is for another bike but I'm not opposed to using it on this one. I have no experience with a ZA or a 1HP cylinder. Will the 14 bing and Boss pipe do this 1HP cylinder any good? Would a stock 1.5/2HP cylinder with that pipe and carb do 40MPH reliably? Or is a 70cc kit necessary to do that?