one bike has a 49 c.c. 2 stroke, a 41 tooth rear sprocket, 20" wheels with a 21.5 inch tall rear tire.
the other bike has an 80 c.c. 2 stroke, 41 tooth sprocket 20" rear wheel, with a 24 inch tall tire.
i only weigh 155 lbs. so maybe that is my advantage, plus both of my bikes are 20" frames (an old schwinn stingray, and a newer schwinn o.c.c. chopper)
Your smaller diameter wheels and tires have alot to do with why you can do that.
A smaller diameter wheel and tire = more torque to the ground due to mechanical advantage.
Ok...
Tightened the manifold screws and checked for an air leak. Didn't find one. Bike runs like a champ at idle and on level ground. At the Slightest incline it bogs down and throttle makes it worse. I tried feathering throttle but not much difference. 1/4 Choke is not helping either. 1/2 makes it worse.
Fuel/oil @ 16:1
If I replace the plug, what size do I get. I don't see how to replce the wires without swapping the whole maagneto. ....any OTHERS suggestions