Sprocket arrived! It was for a bigger type of chain so I had to grind it thinner, but it should work just fine. Waiting on access to a lathe to precision cut it to fit the clutch.

On the bike side of things I affixed the 2 speed sprocket to the front for the chainsaw chain, and put on a 16in front tire from my scrap pile since the 20in one was leaking. Also cut the main engine mount and attached it to the engine.