Originally Posted by
BruceMetras
Taking the Automatix apart and back together again is cake .. I wound my own springs, no big deal ... set it to shift where ever you want .. I run 3 bikes with the automatic 2 speed .. nice hubs ..
Great, Bruce!
Can you tell me the parameters of the springs you wound? Mandrel diameter, number of turns, wire gauge, type of wire, and at what approximate rpm that spring triggers the shifting?
Does the shifting mechanism have any hysteresis? That is, is the upshift rpm any different than the downshift rpm? I've read that it delays the shift until you let up the pressure on the crank, so maybe that's sufficient to prevent it shifting while you're lugging up a hill even if you get above the shift rpm, until you have easy going and let up. Is that how it's working for you?
Thanks.