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RobinSF1 wrote: ↑25 Sep 2023 21:25 No personal experience of Frances and Robson, but our mutual acquaintance lemon jelly recommended them after he had some laverda work done there.

I contacted Robson and Frances but they don't do ignition coil repairs.

I have been in contact with West country windings and they say the specification they use is the same for all Morini source coils and they have never had any returns before. I am now at a complete loss what to do next I have been all over the bloody bike with my multi meter cleaning wiring connectio...

While I am waiting for my ignition system to be fixed I have the flywheel and stator off so I have decided to replace the cam belt. I have found the belt I need on simply bearings website but the website is asking do I want to add belt dressing to the order. Do I need belt dressing I have no idea wh...

Just checked the engine earth and I get 0.1 ohms between engine barrel and negative battery terminal. Also get the same resistance engine barrel to frame.

Is this the correct reading.

I am tempted to buy a wire winder a reel of the correct wire and have a go myself. Has anyone got any experience of this type of winder it's cheap so not expecting much. Manual Coil Winder Counter KATSU Copper Wire Winding Tool for Audio Output Transformer Mechanical Counter 990722 https://amzn.eu/...

I am tempted to buy a wire winder a reel of the correct wire and have a go myself. Has anyone got any experience of this type of winder it's cheap so not expecting much. Manual Coil Winder Counter KATSU Copper Wire Winding Tool for Audio Output Transformer Mechanical Counter 990722 https://amzn.eu/d...

With everything disconnected resistance measurements between green and all yellows and red these should all be open circuit. If available an insulation tester should be used to confirm. Any competent winding company should confirm the insulation tests pass. Mark All wires disconnected and ignition ...

With the ignition on there is a DC voltage on the green lead, off there is nothing. Looks like you disconnected the green lead to measure. As far as I am aware, there should be no DC voltage present on this coil. Do you have a problem in the alternator? I believe when switched on 12 volts is put in...

Thanks for the information I didn't understand the 2nd paragraph but it gives me information to speak to West country windings.

I will look up George Lane.

1. Meter set to DC voltage probe to green wire from stator and probe to cylinder head to earth. Ignition on 0.021 volts Compress_20230923_094123_3721.jpg 2. Meter as above ignition off 0.000 volts Compress_20230923_094122_2530.jpg 3. Meter connected to green wire and green connector in junction box ...

morini_tom wrote: ↑23 Sep 2023 08:31 When your last stator burnt out, Mark asked where the riveted on keeper plate had gone.

I can’t really see in your most recent photo but it’s not obvious that that fault has been rectified. Can you post a few more pictures of that area?

The plate is missing

Might be better to try to find a "known good" stator. Not easy, as those that have them on the shelf in a shed are probably hanging on to them. Just possible I have one I don't need, will search and test. Thanks I but I would like to eliminate all possible faults before I try another stat...

Hi Fastmongrel I would suspect that there is a rogue DC supply superimposed on the green wire when the ignition is switched on, try putting a multimeter in series with the green wire and checking for a DC current, ignition on but without the engine running. Ian C Do I disconnect the green wire from...

"When I tested resistance it was 129ohms it's now 470ohms well over the 300ohms specification." I think Mark may be correct in diagnosing that the resistance is too high (assuming West Country Windings have rewound it in a similar way). Perhaps 'resistive heat' is just cooking the winding...