So I began work on the rear end.  So far it’s turned out great, now just need to figure out how to have the jackshaft, sprockets, and bearings inside there, and be able to still access the sprockets to put the chains on etc.  Here’s a 3d version showing the path of the chains.  I know they look like pully’s and belts, but that’s just cause I was too lazy to make it look like chain/sprockets, but you get the idea.

Here’s what I have so far…obviously some more welding and cleanup to do.