BGB stator output too low.

[Davidsquaredson]

I've got a v1 bgm stator and matching flywheel on a jet200. My headlight is way too dim. I measured out put from stator to regulator and it is 6-7v at 1200 rpm and 10-11v when I'm revving it. Bike starts and rides great.

I thought it should be more like 14v.

What would cause this? One or more could failing?

Tx
David


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[hendy]

weak magnets would cause that. Ac or DC?

[Davidsquaredson]

AC. It's about 5 yrs old if I have to guess, but only a few thousand KMs use as I have several on the road.

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[Davidsquaredson]

weak magnets would cause that. Ac or DC?

I pulled the flywheel. It's a bgm with the solid magnet all the way around. It would hold a 19mm spanner hung from one end. But if I compare it to the scooters original SX taper flywheel, those magnets are much stronger.

I don't have another bgm fly wheel to compare against.


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[HxPaul]

Do you have a cheap Indian flywheel,if so try that.

[Davidsquaredson]

Do you have a cheap Indian flywheel,if so try that.

I'm going to pull an AF Rayspeed flywheel off another scooter and try that.

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[coaster]

Were those readings taken without the lights on? The rason I ask is that you need a load present otherwise the regulator shorts the stator output to earth

[coaster]

Its also worth paying particulat attention to your connections especially the earth tag on the stator itself. That tag is only rivited usually and they are often loose.

[Davidsquaredson]

Hi, lights were on. But I put on an old Indian flywheel and lights were great. So cheers to the person who guessed weak magnets. I'll send SIP a note as that is a product fail.

Tonight I'll shim the pickup to match this flywheel and be done with it.

Tx again

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[hendy]

Or af will remagnetise for about a tenner.