No problem you say, just move the sprocket hub. Well moving the sprocket hub sounds easy but if you run a true vintage sprocket hub with a taper lock you know that getting the hub just where you want it can be a bit of a pain in the ass. It is even a bigger pain if your at the track and you change out a motor.
To combat the need to move the sprocket hub I have made up a series of 'spacer' plates in 3 different thickness's that I can drop in behind the motor sideplate and my Unimount or any flat GEM style baseplate for that matter which will give me a way to align my clutch sprocket with the axle sprocket without the hassle of moving the sprocket carrier on the axle. This set-up is fast, its simple, and its inexpensive.
While we are messing with chains and motor mounts there is one other thing I found to aid in chain adjustment and that is using coupling nuts in place of a standard bolts to secure your side plate to the mount. Coupling nuts are essentially a longer nut and that little extra protrusion on the hex really helps to get a wrench on the bolt to tighten down the sideplate.
See you at THE BIG ONE !
R.E.A.R.