Ok... So I finally got my Puch running this last Friday, just in time for the Decepticons BBQ. It's a 1978 Puch maxi with a 2-speed gearbox. I fired the thing up and ran it around for awhile. Before going to Kalamazoo, I went with some friends to Cleveland for a scooter rally and rode around with them. Bike had some jetting issues, but basically ran great.
On Sunday, I show up in Kalamazoo and unload the Bike, I ride it around for abit and pull up in front of a bunch of Moped Army kids, as I pull up and stop I'm revving the engine up. Let's Review: I'm sitting at a DEAD STOP without brakes, etc.. REVVING the engine up.
When I kill the engine, they come up and ask: "What did you do to your motor to get it to do that?" "Do What?" I respond. "Uhh...Rev up like that, just sitting there." "Umm..Nothing?" (Laughter)
Newsflash: 2-speed gearboxes aren't supposed to be able to rev at idle. I did not know this. On my bike I pull the clutch in to engage 1st Gear and let the clutch out once 2nd gear is engaged.
I put the engine together with the manual & blow-up diagrams right in front of me. I even double checked everything and matched torque settings. there were no 'extra parts' when I was done. The clutches were in excellent order, both pads and springs. Even though this is my first 2-speed gearbox, I'm not mechanically retarded. I've built much more complex scooter engines aplenty and even a Vespa Bravo motor.
SO: What gives? I've got a little over 50 miles on this freshly rebuilt engine, and even though it runs fine, it's obviously got something wrong with it. Does anyone know whats up?
Puzzled, but happy to have my own Moped,