Interesting topic and hijack
My experience w/Stovebolts is very limited but I'm no cherry when it comes to starting and running a 6v tractor in 4 distinct seasons for many many yrs
I ran an old 48 Ferguson TE20 yr round with 6v pos ground elecrics and once the temps dropped below freezing even a fully charged battery would hardly spin the engine w/straight 30w oil.
My trick was to squirt a good shot of gas directly into the carb (side draft 1bbl), full choke, 1/2 throttle then spin. It would catch maybe 85% of the time on the 1st try. If it didn't I'd have 2 or 3 more repeat process try's before the battery would need rechargeing.
I often thought about going w/an 8v battery but felt it would burn the charging system up. 12v conversions are big down my way. But I kept it 6v since my trick generally worked.
Again, great discussion and to the OP sorry about encouraging the hijack
Dave
