professor
Active Member
This is bike 2.
I wanted more power and more riding comfort.
Kind of a hotrod Frankenbike.
The 212 Predator is stock except for re-jetting, doing exhaust and removed aircleaner (gotta make a cleaner and a few other things like guards).
Lots of power.
Initally I set this up with a derailer from the engine but was getting little snapping noises and other noise, so I made it straight drive using what was 3rd gear. The engine has no trouble pulling the gear.
Top speed on the governor is around 30. Gets there fast if needed.
The Frame is an old Huffy mountain with a full suspension rear grafted on. I made loops down the front to accomidate the jackshafts and give it an old time look. Added gussetts on several points.
It does ride nice.
Using a moped seat right now, along with the moped front end and wheels. I'm disappionted with the brakes though. I thought it would stop better. Will be increasing the brake lever legnth at the wheels.
The V brakes on bike 1 are far better- really work well.
I am generating electric using a Razor scooter motor as a dyno, running a 30 tooth #25 (scooter chain) on the engine to a 50 tooth sprocket adapted to the dyno. Works good- giving 11 something volts at governor speed.
This thing weighs 136#, thirty of that is the engine.
Belt drive is nice and quiet. Belt with idler clutch down to a jackshaft, which goes to a bike hub (as a jackshaft) via belt, then out to the rear with 10 speed chain and sprockets. Using "L" series (i/2 inch wide) pulleys and belts. Drive ratio is around 6.8.
Using a HT clutch lever and dual brake lever on the right side.
I hemmed and hawed a long time on wether to use a cent. clutch and chain or the current system.
The cost was about the same, being that I had to buy clutch and brake levers for the belt drive. But the chain drive is incredibly noisy which I hate.
I made a little glasspack muff for up on the engine and the pipe goes down to a cigar shaped 3/4 mower muffler, then to a bit of flex stainless pipe. Fairly quiet- sounds like an old Honda single.
Notes- idlers must be on the SLACK side of the belt. I knew that but somehow got confused. They need to have at least moderate spring pressure to load the belt to avoid slipping.
Pulleys must be free fo rust. Those were my 2 mistakes that took a while to figure out.
I wanted more power and more riding comfort.
Kind of a hotrod Frankenbike.
The 212 Predator is stock except for re-jetting, doing exhaust and removed aircleaner (gotta make a cleaner and a few other things like guards).
Lots of power.
Initally I set this up with a derailer from the engine but was getting little snapping noises and other noise, so I made it straight drive using what was 3rd gear. The engine has no trouble pulling the gear.
Top speed on the governor is around 30. Gets there fast if needed.
The Frame is an old Huffy mountain with a full suspension rear grafted on. I made loops down the front to accomidate the jackshafts and give it an old time look. Added gussetts on several points.
It does ride nice.
Using a moped seat right now, along with the moped front end and wheels. I'm disappionted with the brakes though. I thought it would stop better. Will be increasing the brake lever legnth at the wheels.
The V brakes on bike 1 are far better- really work well.
I am generating electric using a Razor scooter motor as a dyno, running a 30 tooth #25 (scooter chain) on the engine to a 50 tooth sprocket adapted to the dyno. Works good- giving 11 something volts at governor speed.
This thing weighs 136#, thirty of that is the engine.
Belt drive is nice and quiet. Belt with idler clutch down to a jackshaft, which goes to a bike hub (as a jackshaft) via belt, then out to the rear with 10 speed chain and sprockets. Using "L" series (i/2 inch wide) pulleys and belts. Drive ratio is around 6.8.
Using a HT clutch lever and dual brake lever on the right side.
I hemmed and hawed a long time on wether to use a cent. clutch and chain or the current system.
The cost was about the same, being that I had to buy clutch and brake levers for the belt drive. But the chain drive is incredibly noisy which I hate.
I made a little glasspack muff for up on the engine and the pipe goes down to a cigar shaped 3/4 mower muffler, then to a bit of flex stainless pipe. Fairly quiet- sounds like an old Honda single.
Notes- idlers must be on the SLACK side of the belt. I knew that but somehow got confused. They need to have at least moderate spring pressure to load the belt to avoid slipping.
Pulleys must be free fo rust. Those were my 2 mistakes that took a while to figure out.
