So ive got this gorgeous GT185 ive put a lot of work into recently. Got it repaired, plated, everything and have been riding it for a bit. For the most part everything was perfect, but today i was coming up a hill at about 3 k rpms in 4th gear and it started to slow and lose power till it died. Pulled over, kicked it over and found that it would only start if i had the throttle partially open. I had to hold the thing at about 6k rpm all the way home or it would die, which it did like 3 times:(. If i pulled in the clutch or shifted gears or anything that dropped the rpm below like 4 k it would die…and im almost 100 pcent sure it was from lack of spark.
So…i know how these old dc dynamos work…they are setup to not charge unless the rpms are high, like open road high right? But i think this is something more.
Other things to consider…whenever i start the bike i had to rev it up for a min or two finding that the charge light would illuminate and flicker if my rpm dropped below like 2k. Generally this wouldnt happen while stopped at a light unless i was stuck for 5 minutes…once again i thought this to be part of the old dynamo way of charging…but now if i dont keep revving it within a few seconds the charge light comes on, and shortly after it dies. So this is obviously electrical…but do you think it.may be that the undercharge setting on the voltage regulator is too high? Eg…it wont charge till the alternators putting out like 14 v rather than like 12.5? Or does it sound like the battery? Because obviously the battery should be able to maintain for a few minute on its own without being charged? Idk im stumped. Dynamo recently got new c brushes, tested, everything checked out. Also battery is a wet cell and is about a month old…it was fully drained a couple times a few weeks ago by accident when the charging system was up and running.
Other questions…if it is the voltage reg, will any old voltage regulator do for this bike? Secondly…will one of those 3 pound sealed.20ah batts do for a new battery since this is a small bike? I wont use it to crank…just for plugs and lights, ect. Thanks…sorry about bad spelling, in a rush.
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