Interesting side note that we generally consider 6V systems inferior to 12V.

Is this just because 6V systems are all very old, and they are having to fight old, oxidized connections, and having to push twice the current through (v. a 12V system) to get the job done?

I can't think of any reason why a 6V system WITH CLEAN PROPER CONNECTIONS should be "worse" than a 12V system.

Matter of fact, wouldn't that imply that a military-style 24V or 28V system would be even better for a bike?

Enquiring minds want to know.

Good on yer, getting that old nail back on the road. Sounds like fun.

Lannis