[dfukuba]

The spring will only be "unwound" from one end at a time. there will be a stop at the other end, while one of the cams rotate the end of the spring.

the scooter uses npc t-64s with a123 batteries 4p10s.

i have found "machined springs" made by heli-cal. They look pretty sweet, they actually have a hub on both ends of the spring. that would be a wonderfull way to make the mehcanism, but i would need to find someway to get one with out ordering in bulk.