- Joined
- Apr 17, 2002
- Location
- SC Mtns Area
- Moto(s)
- Attack™-ed R1, hybrid S1000rr, XR1200 Q-Ship
- BARF perks
- AMA #: 2815246
Five hundredths of a volt is essentially '0', and is probably within the accuracy window of your multimeter.
Hey Barf!
I just finished replacing the motor in an 2001 FZ1. Motor runs great but the new motor came with an upgraded MOSFET Reg/rect. 3 wires go into the reg/rect and 2 wires come out. These 2 wires are tied directly to the battery with a 30 amp fuse in the positive wire. When I pull the red and black and test voltage with the motor running, I get 14-15 volts. When I attach the wires to the battery and start the motor I read slightly more than 12 volts at ~3000 rpm.
I am leaning towards something specific causing an excessive voltage drain. I disconnected all the connections to the front fairing (headlight, running lamps, heated grips, etc.) without much improvement. Maybe half a volt.
The remaining possibilities would be taillight/ rear turn signals. Going to test those out this evening.
Any tricks with a multi-meter to speed up isolation? I am primarily leaning on the unplug and test method.
This is an "in the driveway" diagnosis of a faulty charging system. Diagnosis was complicated by getting faulty replacement parts.
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When the bike is running at low-mid rpms you should see something close to 14.4v at the battery. This is a normal charging voltage.
If the battery is low it might take a while for it to come up to this voltage.
With the bike not-running you should see 12.8v at the battery.
Just lost my second stator in less then a year. The first bad stator was replaced on May 2015 and 24,000 miles ago. On my way home from a romp where I rode her pretty hard, I noticed low voltage on my voltmeter and it didn't increase with RPM's. Got home, checked resistance from coil to coil and coils to ground, all good. Checked stator output at 5000 RPM and zero, zed, nada, nothing. I pulled the stator and it's burned at the usual place, the top. I thought I wouldn't have to deal with this again as I installed the series SH775 R/R last year when I replaced the stator.
Thoughts, comments, suggestions or am I just unlucky? If it matters, this is a 2012 Vstrom 650.
Just lost my second stator in less then a year. The first bad stator was replaced on May 2015 and 24,000 miles ago. On my way home from a romp where I rode her pretty hard, I noticed low voltage on my voltmeter and it didn't increase with RPM's. Got home, checked resistance from coil to coil and coils to ground, all good. Checked stator output at 5000 RPM and zero, zed, nada, nothing. I pulled the stator and it's burned at the usual place, the top. I thought I wouldn't have to deal with this again as I installed the series SH775 R/R last year when I replaced the stator.
Thoughts, comments, suggestions or am I just unlucky? If it matters, this is a 2012 Vstrom 650.