Email me if you find yourself interested, I offer a few different power options and set ups, I build to order and work full time so expect a little delay. A couple weeks depending on what you want.
I have put these on quite a few bikes and even cheap huffy, and Kent's seem up to the job and run just fine. My cheap/light 700c retrospect has held up great!
The g2d99 23cc engines are pretty good for a basic get around set up, more of an assit engine. They open up quite a bit with aftermarket carb and exhaust can and become pretty beefy. I'd like to power up one of these, see about a gasket delete and do a tuned pipe kit, cut the fly wheel and drill out a bit.
The 29cc and higher is when you start to get into a "get away" moped. I.e. once that power band picks up it's all power. Obviously friction drive principles still apply, but it's amazing power.
I can do rovan double ring 36cc and do a gasket delete for some crazy power and there is a 45cc they make that I would love to mount up for someone.
A 45cc direct drive would really crank up the volume.
Considering it myself, but wanna make that 23cc power set up first.
And for those curious about the clutching operation, the spring is not hard as one imagines to operate and is totally adjustable, just release a little tension, paired with a little bit lower tire PSI if one finds it difficult to pull the lever.
Locking lever, simply functions as it would on a Pk 80 style kit, but with ABSOLUTELY NO drag on the wheel when clutch is disengaged.
As far as I know no kit offers this function.
Hit me with some Q's
