yet another head scratcher

Tornado said:
Be sure to set drive chain tension with rear wheel on ground, taking at least bike weight or even with a rider seated, else the spec tension will not be sufficient as swingarm rotates upward from shock compression under load. With SA drooping down from bike on CS, you need to add more slack to chain deflect measurement.
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I use a ratchet strap over the seat hoop to pull the shocks down to a loaded state.
 
I check it that way in the beginning, then compensate. That is, I find about 1-1/8" free play on the prop stand equates to 1" with my fat arse on the seat.
SOOOOOO much faster & easier.
 
One member here stated he uses a bit of wire around chain, while sat on bike, to lift chain and measure wire movement to arrive at correct slack.
 
Did you fit a D.D. seal to the end of the main shaft ? I highly recommend it to stop gearbox oil migration into the clutch , which could be the issue .
 
Unfortunately it's an atlas and not threaded to the end. I will reduce the amount of oil in the GB and perhaps go back to what JC uses...ATF
 
There are two bikes. My Atlas and a '72.
I pulled off the clutch from the Atlas...a Tony Heyward belt drive circa 2001. It is a Triumph based clutch with an adaptor for an Atlas mineshaft. I cleaned all the oil out of it, blew out the pushrod hole with carb cleaner, and changed the GB fluid for ATF. I kept the level down approx. 1/4" from the level plug. Shifting was helped by 40%. On to the gearbox innards. My next idea is to see if first gear lay has a bad bushing. Then check the layshaft bushing. Any other ideas?
 
seattle##gs said:
There are two bikes. My Atlas and a '72.
I pulled off the clutch from the Atlas...a Tony Heyward belt drive circa 2001. It is a Triumph based clutch with an adaptor for an Atlas mineshaft. I cleaned all the oil out of it, blew out the pushrod hole with carb cleaner, and changed the GB fluid for ATF. I kept the level down approx. 1/4" from the level plug. Shifting was helped by 40%. On to the gearbox innards. My next idea is to see if first gear lay has a bad bushing. Then check the layshaft bushing. Any other ideas?
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First gear layshaft bushing is small and delicate , perhaps it cracked . I've seen them crack . You could also drain the gearbox oil and inspect it for bronze content.
 
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