CHAIN

A chain tensioner is on my to buy list from FEKED.com, there is already a bracket on the swinging arm to mount this or a similar device.

It looks like I may still have clearance issues between the chain and the tyre, I will keep an eye out for a cheap used rear drive sprocket that I can machine to be used as a spacer between the current sprocket and the wheel. I know Greystone Enterprises sell long sprocket bolt sets for this purpose.