Scooterotica

I managed to fry the electrics on my scoot in the passpeort que leaving the Santander - Portsmouth ferry the other day. It was clear that I had a short and that there was no spark so I got the AA to recover me home.

I still haven't pinpointed the route cause but have replaced the melted main feed in the loom from the regulator to the headset and have also seperated and (temporarily) taped up wires to the ignition switch which had fused together. I now have intermittent lights and the scoot runs fine but the DC output from the Wassel (it's a full DC conversion) is only 8.5 volts and the AC output from the stator is only 15 volts.

I have checked the resistance of the lighting coils and get 1.2 ohms which is the same as my spare stator. Is it possible for a short circuit to result in the flywheel becoming de-magnetaised?

Cheers

colin

Anyone got any ideas?

I'm no electrical wizard- far from it!

But, I've read somewhere sometime, that a flywheel can become "demagnetised" due to a short within the circuit- might be in the old "Dick Sedgely" Work Shop Manual

Chris

bristolmod wrote:I'm no electrical wizard- far from it!

But, I've read somewhere sometime, that a flywheel can become "demagnetised" due to a short within the circuit- might be in the old "Dick Sedgely" Work Shop Manual

Chris

Thanks Chris, I don't have access to the old manual, anyone able to confirm?

Cheers

colin

Not exactly your question but I have had an E.I. flywheel de-magnetize when the boss was rubbing on the inner of the stator. Couldn't work out why it was running fine one day, then would hardley start the next, had sucked all the magnetism right out of it. So, not exactly a short, but the magnets where getting run to ground via the boss.

I've never heard of the ferrite type demagnetising through a short and would have thought that stator damage is more likely even though it isn't showing on a multimeter, the difference between good and bad could be fractions of an ohm.
Are you sure that it was a dead short and not a high resistance fault, did the fuse not blow to protect it?