New coils - still lose 1&4 after bike is hot

[Fergie]

Is this bike charging. The correlation is notworthy but the only theory for that correlation is the bike can't flash the blinker when the engine is running powering both coils.

Do a little test.

Let bike cool

see if blinkers work with engine off.
start bike on all 4 test blinker again. If it doesnt work
bike off again see if blinks.

You may just have a bad charging.

Do you have a volt meter?

So, didn't get a chance to check the ignition wires today, but did check the blinkers this morning.

The bike had set overnight, and was plenty cool. Turned key to on position, checked blinkers, no go. Started bike and let it run for a bit, all four cylinders were firing....still no go on the blinkers.

Shut the bike off, tired again, still no blinkers. Wiggled various wires around to see if it might be a connection issue, but noting changed.

I'll check things over with a meter tomorrow.

G

[Fergie]

So I got around to testing things today, and found this jewel after taking off wads of e-tape:


So, on to the info and hopefully a diagnosis.

With the bike just sitting there, no key on or anything, the battery voltage is 11.81. When I run the bike at 4000rpm, the VDC is 121.5.

Resistance between stator wires was:
Y-BW: 8.1
Y-GW: 8.1
GW-BW: 7.9

I swapped in a fresh battery and ran the bike at 4k rpm and tested the voltage at the stator wires and it was only about 8v or so, withing a few V at each wire combo.

So this leads me to think the stator is kaput, no?

Thanks,
Gavin

Voltage reading from Dyna at black and white wires was 11.03 on both of them.

[BassCliff]

Hi,

Is the stator completely disconnected?

Are you getting 8 ohms between the stator legs?

Are you getting 8 volts AC?

Keep up the good work.



Thank you for your indulgence,

BassCliff

[SqDancerLynn1]

It does sound like a bad stator!!! You did check it as an AC voltage output from the stator ??. I would also check the accuracy of your meter.

[Fergie]

Hi,

Is the stator completely disconnected?

Are you getting 8 ohms between the stator legs?

Are you getting 8 volts AC?

Keep up the good work.



Thank you for your indulgence,

BassCliff

The stator was completely disocnnected when I did the tests.

The resistance was between the stator legs.

I measured VDC, not AC, so I'll check that tomorrow.

What brank(Ricks, RM, or Electro) would you all recommend for a stator?

Thanks,
Gavin

[Fergie]

I've got a stator from Rick's on order, I'll double check the Vac at lunch time.

Do you think that a malfunctioning stator could be causing the other electrical issues? As in 1&4 cutting out when warm, the signlas not working when cold, but working when hot?

On my Landcruiser, I had some alternator issues and since the various other electrical components werent getting the required power, it was causing all sorts of other issues...I'm wondering if this is a similar situation.

Thanks,
Gavin

[BassCliff]

Hi,

If the battery is really low the lights and blinkers can act erratically. I'm not saying that it's the cause of your other issues, but you must ensure that your charging system is healthy before other issues can be worked out. You're doing fine. Keep up the good work.

#1 & #4 not firing intermittently could be an igniter or signal generator. Let's get your charging system squared away, then work on the ignition.


Thank you for your indulgence,

BassCliff

[Fergie]

I checked the AC voltage at lunch, and all three leg combos were reading at ~20v.

That is with a fresh battery and the proper RPMs.

[BassCliff]

Hi,

Yeah, that's not really enough output for a stator. It should be around 70VAC.


Thank you for your indulgence,

BassCliff

[Fergie]

Hi,

Yeah, that's not really enough output for a stator. It should be around 70VAC.


Thank you for your indulgence,

BassCliff

Figured as much.

I've based the troubleshooting off your webpage, and will be basing the R&R of it off your page as well!

Thanks for the tech advice.

Once I get this taken care of, I'll report back on the status of the bike.

[chef1366]

Did you test them with the meter set on A/C?

[Fergie]

Did you test them with the meter set on A/C?

Yes, initially I had tested them on DC.

Today at lunch, I tested them on AC, and that is when I got the 20v AC reading.

[chef1366]

Yes, initially I had tested them on DC.

Today at lunch, I tested them on AC, and that is when I got the 20v AC reading.

What RPM did you get that reading at?

[Fergie]

What RPM did you get that reading at?

Appox. 5,000rpm.

[chef1366]

Appox. 5,000rpm.

Powdered Toast then