People use these on go peds They'll run under a four hundred pound load for yearsThis is good it can bolt up to the 5:1 gearbox. However check out these ststs:
Total Displacement: 41.5cc
Bore: 40 mm
Stroke: 33 mm
Piston Rings: 2
Compression: 7.5
Carburetor: Walbro WYK-93
Oil Mixture: 40:1
Horsepower: 1.97 hp at 7500 rpm
Torque: 1.66 lb ft at 5500 rpm
Clutch Diameter: 78 mm
Spark Plug: NGK BM7A
Approx Idle RPM: 2500 rpm
Approx Max RPM: 12000
Weight: 6.5 lbs (2.96kg)
Although it can go up to 12k rpm it should never be pushed to that. That's 12k under no load or long duration. It has a max hp of 1.97 at 7500 rpm; once you go over that hp will begin to diminish under load. After you get beyond max hp the contributing factors to speed then become aerodynamics, weight reduction, gravity, terrain surface and wind direction. Still I do like this engine.
It’s just not typical for a 64 Y/O to be building and riding motorized bicycles. All the people I know my age who ride cycles either ride bicycles or BIG motorcycles…not the kind of cycles we ride on this forum.I think I fall into categories 1 & 2.
I’d possibly be classified as a broke, weirdo, tinkering gear head.
It probably describes a good number of people here, and there is nothing wrong with that. This forum is such a great resource for people to learn and research. If they take the time to study they can plan out a reliable bike build while also keeping the costs down. I laid out a build using the Hyper cruiser with upgraded wheels and disc brakes with the silver slant engine kit from BE and it ended up right around $500, and that was with a couple of personal additionsI think I fall into categories 1 & 2.
I’d possibly be classified as a broke, weirdo, tinkering gear head.