Resurrection - bad stator. what's next?

[ducfun]

The battery was bad. I also discovered small white chalky deposit indicative of battery acid (I think...). I returned it since it was less than 90 days! Thoughts of the acid bath? I've only heard/read of a bad R/R as the cause, but as I've said, I have a new one.

40A is good. So is the ignition fuse that I'd blown (maybe before new R/R) as mentioned in the first post.

The charger I was using was a cheap one from autozone (Schumacher 1.5A). I'm buying a deltran...

I'll buy a new battery Thursday. They were out of the Yuasa yb16al-a2. Speaking of, any readily available sealed versions?

Without a battery, I took the following resistance measurements (in ohms):
Yellow1 to yellow2 : 0.3
Yellow1 to red : 4M (i.e 4*10^6)
Yellow1 to red/black : 4.63M
Yellow1 to red/white : 4.5M

Yellow2 to red : 4.8M
Yellow2 to red/black : 4.9M
Yellow2 to red/white : 4.9M

Red to red/black : 0.8
Red to red/white : 6.6

Red/black to red/white : 6.2

Yellow1 to ground : 4.65M
Yellow2 to ground : 4.7M
Red to ground : 0.3
Red/black to ground : 0.7
Red/white to ground : 6.5

The ground point selected was the point at the R/R mount. The wires were disconnected from the R/R and measuring across all wires on the "bike" side.

Other than the yellow to yellow, I'd expect the other measurements to be fairly high. Red to ground for example, is that a problem? A short?

More later. Thanks all!!! I owe multiple rounds of beer to this community.

[suzyj]

Other than the yellow to yellow, I'd expect the other measurements to be fairly high. Red to ground for example, is that a problem? A short?

It depends. Your multimeter on resistance mode is designed to measure resistors, not semiconductors.

The way it measures resistance is by putting a current through the probes and measuring the voltage across it, and then applying ohms law. Depending on which way around your probes are, semiconductor devices like mosfets or diodes will either conduct or not, reading either high or low resistance.

[ducfun]

@suzyj, would that only apply if I were measuring across wires going to the R/R? I was measuring the other wires; the wires going to the bike side (imagine the R/R disconnected and not measured). There may be little value in my measurements, but I am/was assuming a good R/R and didn't include it. I will, once a get a new battery.

[suzyj]

@suzyj, would that only apply if I were measuring across wires going to the R/R? I was measuring the other wires; the wires going to the bike side (imagine the R/R disconnected and not measured). There may be little value in my measurements, but I am/was assuming a good R/R and didn't include it. I will, once a get a new battery.

There are plenty of things connected between +12V and ground that don't look like resistors. The ECU, battery, diode across the starter solenoid, gauges, etc etc.

Resistance measurements of the stator are useful. Other resistance measurements, not so much. Better to measure voltages, or put your multimeter in series with the battery and measure current to look for leaks etc.

[Ddan]

I'll buy a new battery Thursday. They were out of the Yuasa yb16al-a2. Speaking of, any readily available sealed versions?

AGM replacement for YB16AL-A2, they sell chargers, too

http://www.amazon.com/MotoBatt-MB16AU-Sealed-Maintenance-Battery/dp/B003YMXYVS/ref=sr_1_1?s=automotive&ie=UTF8&qid=1341393935&sr=1-1&keywords=12+Volt+20.5+Ah+MotoBatt+MB16AU+Sealed+Maintenance+Free+AGM+Battery

[ducfun]

@Suzyj, Ah, brilliant! At least I felt like I was doing something, lol! I'll get to real measurements with a new battery. I still have Howie's suggestion to work through too.

@Peggy, going to link now...

[ducfun]

New battery:
Parasitic draw test came back good.

Question on electorsport diagnostic - at 2500 rpms, I have exactly 13.5 v across the battery; at 5000 rpms, I have less than 14.8 v...but as I increase the rpms it dips below 13.5 v (to ~ 13.2 v). Is this a problem?

Looking at the next step (just incase) I have 4 colors - I have just above 0.2 v from battery positive to red of rectifier And the bike at idle...again, is this a problem?

[suzyj]

New battery:
Parasitic draw test came back good.

Question on electorsport diagnostic - at 2500 rpms, I have exactly 13.5 v across the battery; at 5000 rpms, I have less than 14.8 v...but as I increase the rpms it dips below 13.5 v (to ~ 13.2 v). Is this a problem?

Yes, it is. Voltage across the battery should hold throughout the rev range at ~14V. It's dropping at high voltage because the injectors and coils are demanding more power.

Looking at the next step (just incase) I have 4 colors - I have just above 0.2 v from battery positive to red of rectifier And the bike at idle...again, is this a problem?

Again, yes. This indicates a poor connection from your rectifier to your batery.

[ducfun]

I was afraid of that...

I'm working second shift EST time, so I'll go back to it tomorrow.

[ducfun]

All, I intentionally delayed posting again until I could confirm battery, stator and electrical system was sound. I bought the correct battery (not the cheapo from autozone) and have been good since. I also upgraded to the deltran battery tender.

Thanks for the support and education!

Unfortunately, I'm still not riding...I had a test ride go wrong last night. Hopefully it is just a bad fuel pump.