Next was the jackshaft.
Tricky, because it had to be adjustable.
In addition, I needed to weld a plate to the frame tubes behind the engine mount plate on which to mount the jackshaft.
Initially the mounting plate for the jackshaft assembly was attached with only two bolts through the frame plate.
The holes of course have a bit of clearance around them, and with the actual hundreds of pounds of force exerted by the chains, the assembly ended up skewed slightly on the frame plate, thereby missaligning the sprockets with the chain and creating slack in the chains. I later added a couple more 1/4" bolts in front of the original 5/16" bolts shown, with the holes slightly offset so that as the chain from engine to jackshaft and jackshaft to sprocket want to twist the assembly, the bolts are set solidly against the frame plate to prevent this. No problems now.
Tricky, because it had to be adjustable.
In addition, I needed to weld a plate to the frame tubes behind the engine mount plate on which to mount the jackshaft.
Initially the mounting plate for the jackshaft assembly was attached with only two bolts through the frame plate.
The holes of course have a bit of clearance around them, and with the actual hundreds of pounds of force exerted by the chains, the assembly ended up skewed slightly on the frame plate, thereby missaligning the sprockets with the chain and creating slack in the chains. I later added a couple more 1/4" bolts in front of the original 5/16" bolts shown, with the holes slightly offset so that as the chain from engine to jackshaft and jackshaft to sprocket want to twist the assembly, the bolts are set solidly against the frame plate to prevent this. No problems now.
Jim Waltz, West Sacramento, CA