Clutch Play

Finally I have some progress to report!! Stripped and repainted the inner primary, and started to install the new clutch parts with the OEM chain primary. First pic shows a homemade tool for holding the clutch hub stationary while torquing the center nut. Prevents breakage of the clutch retaining studs. Ask me how I know...

The 5/16" rod running down the center of the transmission mainshaft is what actuates the clutch.

Funny how often Grandpa's old "Trimol" wrench is the only one that does the job. I used this wrench to grab a 1 7/8" socket to tighten transmission mainshaft nut after replacing the oil slinger.

I think it's kinda cool that the same wrench used to repair SP&S locomotives 100 years ago soldiers on. It has four generations of Root mechanic karma going for it, and it never fails me...

Here is the clutch hub all assembled with new bearings, bearing retainer, 2 studs replaced, and of course the new clutch shell with the chain sprocket. The clutch sprocket is 37 tooth, and the engine sprocket will be 22 tooth. The transmission sprocket is a 24 tooth. I still need to count the rear sprocket, and then I can figure out speed vs. RPM in the various gears. Yeah, I know, nerdy engineer!

Here is a picture of the clutch all assembled. It has plenty of clearance behind from the inner primary, and it seems to work pretty well. I mounted one of my new footboards temporarily because the footboard limits the travel on the rocker clutch pedal. All seems to be well. The little hole behind the engine shaft is a calibrated leak that oils the primary chain. I will insert a short section of steel tubing with a flare on the end once I get the front sprocket.

I have to mount the front sprocket and the chain, adjust the primary and final drive chain tension, and check the chain oiler to make sure it's set

right. Then mount the outer primary, and terrorize the neighborhood once again.

Tomorrow is the ABATE swap meet in Monroe, WA. The front sprocket should arrive Monday. Hope to be riding soon...