Do a google search on Commando sprag gear to see its related to the Spragthrope kennal of dead end inovations that even seasoned Nortoneers might only get 2-300 miles stop/starts before back to kicking. Sorry for ya'll that got stuck with a Commando after it peaked in early '70's 750's. Alton is better advertised but DynoDave's starter system may be a better deal, thought don't know about how well it treats sprag gear lasting. Thumb commensors are known to lower IQ in all other brands but Commando E-start owners so ride with pride and a spare sprag at home.