Giant Stilleto, Staton jackshaft, predator 79cc, and?

[Pickleman]

I bought a Giant stilletto from a kid who messed its value up by welding a sissy bar in place and losing the rear fender. Cost, $90. I would like to mate a 79 cc predator to a Staton jackshaft and use the bike gears to shift. I will add disk brakes to the front. Would the best bet to marry the Predator and the Stanton jackshaft be an AGK clutch and jackshaft? Or could I run the centrifugal clutch on the predator straight to the Stanton jackshaft what tooth count gears would I need on the jackshaft and clutch to do that?? I'm looking for a comfortable cruiser in the 35 mph range using the bikes gearing. I have a 45 mile round trip commute, three days a week. I use to ride that on a racing bike, but I'm getting older and fatter . . . . Too many centuries on old fashioned Clip in pedals did a number on my knees. I'm a pretty good welder with a shop full of metal fab tools--my hobby is building experimental airplanes--so building motor mounts and the like will be easier for me than some others.

Any advice? I have poured over the web for a while, and have found a few Stilleto builds with Staton kits, or Predator builds, but no one putting both a predator and a shift kit on the Stilleto.

 

[KCvale]

Spiffy bike.

You have lots of options but all will require some welding if you want it to stay together.
You definitely want to jackshaft it to use the pedal gears, but beware how much power you put to the derailleur and it's thin chain or they will fail.
If you shift properly (a learned skill) and a KMC HL710 half link drive chain you should be able to mount a good sized 4-stroke in there just fine.

Good luck with the build and have some fun, it should look awesome when done ;-}

 

[Pickleman]

Spiffy bike.



You have lots of options but all will require some welding if you want it to stay together.
You definitely want to jackshaft it to use the pedal gears, but beware how much power you put to the derailleur and it's thin chain or they will fail.


Thanks! I built a China girl about six years ago--used a hardtail mountain bike. The ride was fun for three hundred miles,then the constant maintenance wore on me. I needed something a little bigger to haul my 225 lbs. I actually looked for one of these frames for a while. The welding is covered--I have a nice tig for the tubeing and a very large sheet metal brake to bend the motor mount. I have a tubing notcher and a tube bender too. I figured I'd weld a stub tube up from the bottom tube and weld the motor mount plate to that.
The gearing from the centrifical clutch to the Jack shaft is what I really need help with.

 

[KCvale]

The gearing from the centrifical clutch to the Jack shaft is what I really need help with.

Ya, that is going to be tricky, it's nothing but open space and round bottom bar.