Haven't been riding the Honda (which is in my profile pic) for awhile. The last time Angie and I took it out we ran out of electricity. Thats bad, when your bike runs out of electricity its just like running out of gas.
At first I thought the problem was the battery. The one that was in it was 4 or 5 years old and thats really all you can expect from a starting battery. So I replaced it but the problem still plauged me.
Tonight I cleaned my desk and found the spare set of brushes I'd bought for the alternator. The old ones had worn out and I'd made a set (cut down some from the hardware store) but I didn't really trust them. I installed the replacements, used some 600 grit sandpaper (from the Hammie's hood project) to clean the commutator (thats where the brushes run) and then cleaned it good with contact cleaner. The alternator tested out fine which is to say it wasn't shorted out anywhere. The rectifier/regulator also tested fine so I fired it back up and....
Son of a gun, it works. At just over idle its running 14v when I put the multimeter across the battery. The "voltmeter" on the bike is very slow to respond but the multimeter was quick. Thats great, a weight totally off my shoulders.
On the downside the 190D has a bad differential bearing. Bob is loathe to replace it because he's worried about getting the pinion shimmed correctly. He thinks a good used one will be a better bet anyway. I don't really know what to do, maybe try someplace else? Bob's been good to me, he didn't even charge to diagnose the issue.