Hi rodnoc (what a cool handle),..thanks for the very informative video link ! It looks like he's using bronze-aluminum bushing With self lubricating Graphite plug inserts. The gear-train "chatter" noise reduction is noticeable & usually indicates more than a little bit of gear mesh issues going on. Also, loose fitting,hardened steel needles pounding directly on the crankshaft journals can't be good &
definitely gonna leave some wear marks that won't "buff out" that a simple, less expensive plain bronze straight bushing (with or without self-lube features) will certainly eliminate. The usual spur gear mount spacing distance tolerance (> 0.001" for class 8 gears) seems needlessly exceeded & would really "bother" most owners of this really Cool almost flawlessly executed (for the most part) rare, affordably priced working masterpiece !! ...Maybe these production execution issues aren't pricing budget (what's another $25) or accidential design issues but rather an intentional, added value,
ownership mind stimulating, the gift that keeps on giving electro-mechanical challenges that keeps us busy in the workshop, correcting that "just one little thing" i can fix bonus !!