James in Brum

Thank you [mention]Stu[/mention]

Is there a way to be certain it’s the stator? Are we certain it is the stator?

Okay so £90 for a new one is the best way to go?

Ah shit, so what does that mean. I need a new stator/second hand one or is it something that can be mended?

On this setting on multimeter I get 1.8 on a-b 1.3 on a-c and .6 on b-c I don’t know if I have the setting of the multi meter correct or if those figure mean something to you?

Thanks Stu. Will do that shortly.

One of my posts didn’t post. The one I meant to quote was, the check with the engine running is that a-b a-c b-c again but with engine running?

If so will check in half an hour

No reading at all across a to the negative battery terminal same for b and c. As in it didn’t register at all, no change on the multimeter screen as if there was no circuit at all. All of this with ignition off.

Just to be clear ‘a’ to neg battery terminal? If so do I do a and b and c to beg battery terminal?

What does tab to tab mean in the latter test?

A-b b-c and a-c on the yellows all under one ohm, taking account of the multi metre leads there is about 0.3ohms in the system only a little more than the leads register. The next set of instructions say to measure from the connector to the new terminal of the battery. If I assume that means the live (brown wire, from the connector to the battery negative terminal I get 0.8ohms. The instructions said I should not get anything?

When it says a to b b-c and a-c is that the three yellow wires, nominally one is a one is b and one is c?

Does the ignition need to be on for the first set of test?

Turned the engine on. Prior to doing so battery reading 12.5volts Whilst Erving at 6000 revs reads at 11.95 volts and I watch the voltage drop. Over roughly one minute dropped to 11.9 Also did not start easily, took a half a breath longer than it should have.

Morning , running at what revs ? According to my ER5 manual the charging output at idle speed should not exceed the battery voltage i.e. 12v . The charging output should only increase when the revs increase to normal operating speeds i.e 4000 + rpm . Now I realize it's not the same bike but I would bet that the principal is the same . So , at what RPM were you measuring the voltage ? I wouldn't be too worried about that half a volt , bear in mind that you have just started the bike Idling so sub four thousand. Should I try measuring whilst revving? Or take for a ride and see if she still works on the ride? Or something else Rob?

Thanks Stu. My five year old has rub out of patience. I will come back with new photos in a while. Appreciate the input and support.

I’m sure that is not what you meant. Could it be a short on the break light switch cables that corroded? The loom just plugs into the rectifier via a connector.

I’m sure that is not what you meant. Could it be a short on the break light switch cables that corroded? The loom just plugs into the rectifier via a connector.

That’s what I wondered. Any ideas?

Have turned it off before it conks out.

It seems to be ‘losing’ voltage

That was whilst running. Have checked again now and 11.95