hi john, thanks for the reply to my odd question. (its hardly an rc model !) what cdi are you refering to ? is it something you make or sell ? i could make a new alternator to supply a regulated dc to run it ? (the origional alternator only generates power during ex / intake / comp, to charge the cap. it dosent generate any power near to fireing.) if it was a full circle rotor, the output would be double, so that seems very good. the spark timing could be an issue. at kick over speed (approx 150 rpm) it fiers at tdc. from there to 2500 rpm it advances (linier) to 36 / 38 degree btdc. it stays at that angle to 8000 rpm (max) how the the lucas rita pickup is configured it works very well. i have never had any dealing with a hall sensor (35 years making and fixing race bikes and cars) but it could be a posibility. early ccm cdi (1970,s) used a single power transistor. later models used a single mosfet, these were free running oscillatos. dose yours use 2 mosfets and a crystal of some sort to make a stable frequence ?
thanks stew.