Re: chain tension
I have a 415 heavy duty--I think it ends up being wider at least outer diameter than the 415?? I wish it was a little skinnier for wheel/frame clearance but I know it clears by the hair on it's chainy - chain- chain (ha- ha ! ) if I get it near perfect straight. Im definitely tightening certain bolts on the rear wheel drive sprocket to try to straighten it but the clearance to the spokes/rubber is already pretty tight so I have to be careful.