There is an excellent chance that your stator and rotor (alternator) is not putting out enough juice to run the system and keep your battery up. They get old and you have the classic symptoms. I recommend the hi-output SPARX system.
I'll DEFINATLY check that! I put the oil in personally... I thought I went with the proper amont, but as usual with me, I might have over-done it. Thanks!ol_scratch said:Here's a problem I have found in the past - do you have oil in the chain case? If so do you have too much oil? A BSA I bought a few years ago. Showed those same symptoms. What I found was the chain case was carrying a crap load of oil. I got in between the rotor and stator when it was run harder, and messed with the magnetic field. I guess the previous owner put in extra oil to make sure the chain didn't crap up, saying it was stored for 20 years. Drained it out, and within a little time the problem was solved. Proof to a BSA - stored in guys basement 20 years. Pulled it out, changed the engine oil. Kicked it over and the damn thing ran for 2000 miles that summer, through that winter, into the next summer with out fail. Sat for 3 monthes while snow sat on the ground after that, and then went to start up that spring and blew out the whole electrical system. Lucas was into S & M.
Basicly what you experiencing is a weak magnetic field, it could be either as the above, or as previous people mentioned, the stators worn out and just can't produce a stable enough field anymore.