Great project.... Keep the updates coming!
Is that a duplex chain or twin chains on parallel sprockets?..... If the later keep an eye on stretch.... Twin chains have been used on high power bike engined single seater hillclimb racers..... What can happen is one chain stretches a bit, which puts more of the strain on the shorter one, which stretches... Etc, etc, etc...... For high stress chain drive (200+bhp driving wide sticky slicks) most people nowadays use single EK DRZ2 drag chain... Massively heavy side plates so very stretch resistant.... Not an o-ring chain but that wouldn't be an issue fully enclosed like that.
Great work... Look forward to seeing your progress.
K