lbrackr756
Little Egypt Airheads
I just bought a 1995 R100RT. At time of purchase voltmeter was showing about 12.5v at road speed. Prior owner had checked with Lap and was told as long as voltage stayed at that level things would be ok, at least for a while. After purchase I immediately road the bike almost 800 miles home. After the first 200 miles and upon start up after sitting over night voltage only showed 12.1 and, slowly, slowly, over the next few hundred miles, voltage dropped to a low point of about 11.3. Being still 200 miles from home I began to think I should visit the local WalMart and buy an emergency battery charger in case the system failed completely. Then suddenly the voltage increased again to 12.1, then back down slowly to 11.3, then up, then down. I made it home ok. The bike never failed to start and never showed signs of electrical malaise. The generator light operated normally, only coming on occasionally at low idle. Voltage would drop to under 11 at idle. Does anybody have an idea what might cause this? My feeling is it might be the voltage regulator but I don't know. Seems to me diodes would either work or not, too. The readout on the gauge was also compared to a test instrument and found to be accurate.