[Masteryota]

Keep in mind where the chain will be coming from with the TAV, it will be further back than with a clutch. Making that change alone would make me rethink about welding in anything more than the axle, until I have the unit in hand, ready for mock up. Your best bet is to make the engine plate shorter on the output side to allow the chain to run forward to the axle. It's your build, but I would rather see slower progress and do it only once, rather than shoot it, and then need to reshoot it.