OK; was confidnet going with a belt drive, then changed to Milodon gear drive and now I'll stick with a double roller.
Will use a setup with timing changed on the crank (9(?) different position at 2 degree increments).
Think the ones with adjustable cam gear won't offer any positive as long as I don't have a removable front cover for easy adjustments and also because it makes the gear a little heavier!
Anyway; here's a thought of double rollers.... The slack in the chain after some years of use & wear are caused by both by worn teeth on the gears, the chain stretching and rollers being ground down.
Will a billet/billet gear have any positive effect on wear (as oppsed to a billet/ forged or forged/ forged gears, given the chain is identical?
Or is it just another gimmick of sales?