Have heard talk around the tracks that if you remove the Electric starter and battery you can greatly improve performance of your mini. Is this accurate and if so what is involved in the procedure.

 

Kirk,
First remove teh trans cover and remove teh Variator. Under it remove all the gears for the starter and anything else in there. (starter clutch) The starter clutch has three srcews in it, Remove them and keep the plate that is spindled. Put the spindled plate back in then install the variator. Put the cover back on and you are done.

You can also purchase a stator with the charging coils removed. This helps also. Doing either or both of these will require a small adjustment to the airscrew because you have changed how much fuel it needs to idle.

 

Tommy,
Besides the reduction in almost 10 pounds to the bike what other benefits are achieved from this procedure. I can only guess that the CDI performance is improved by the reduction of electrical load.

 

The starter clutch is on rollers. The drag it puts on the crankshaft is enough that once removed it is noticable. Same with the stator coils. THe magnetic drag of the coils slows down the crank also.

Rich Hetrick and I was discissing the stator deal Saturday and he said that on his dyno, the stator helped from dead stop, but not from a coast down hit the throttle again. So, He said on the dyno it looked like at the gate it will help but in the race it will accually be slower. The only way I have to test is 200 ft drag races. In drags in is noticable. I did not notice the thing that Rich saw on the dyno.

 

Tommy,
Sorry so late on reply, work has been crazy! Made field test on suggestions and did notice faster response from holeshot but lost full 2 seconds on 1/8 mile laps. Re-installed stator components and time came back. Still wondering if we have Trans components right. Ryan is 4'4"..
94 pounds. From this info can you make suggestion on possible roller weigths....torque spring size and clutch spring strenght for optimal trans performance. Ooops! You might need this as well...
Mods..
Carlile 16-6.8/8 holeshots
19/27 sprocket set-up
Unlimited CDI
96 Main Jet
Airbox remounted Polaris and DRR style and finned for more airflow.
No changes to stock Exhaust as of yet. From info you gave me this didn't show any noticable power gains..right????!

Personal note.....
A month ago Ryan during Heat Race at PIR (Paducah International Raceway....1/2 mile High banked oval) hit the wall at forty mph and broke both bones in right forearm. My little man never shed the first tear and 9 days later at the very next race, with a full elbow cast still placed an impressive First in short-track race's. Didn't run TT race because cast made it impoosible to make the left-hand turn. Gutsy little Dude!!!

 

Lightening the load on the flywheel will require a jet change. Usually about .05 to .1 mm bigger. IE 100 or 105 for you. Try that and let me know what happened. HTe power difference should not be enough to require a trans mod at all.