no tickover when you turn on the lights
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shilloboxer
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Just changed the low voltage coil on the stator after engine stopped and no spark. Scoot now running again but when you put the lights on engine will not tickover. I have changed the light switch and the coil and checked the wiring but nothing found.
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Knowledge
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When you switch on the lights, the demand for extra electricity causes drag on the flywheel and this slows the engine. If it was a bit borderline already on the tickover, the extra drag will tip it over the edge.
However, this does not explain why this has developed after the change of coil. Perhaps the magentic field does not carry enough flux to keep the spark bright and run the lights.
Try borrowing someone else's flywheel. Although I would normally recommend this without checking the timing, as you are only concerned about the tickover, it will be fine for an experiment.
However, this does not explain why this has developed after the change of coil. Perhaps the magentic field does not carry enough flux to keep the spark bright and run the lights.
Try borrowing someone else's flywheel. Although I would normally recommend this without checking the timing, as you are only concerned about the tickover, it will be fine for an experiment.
Martin
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coaster
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Are you sure about that Martin? I thought that the load on the stator was constant and the voltage regulator shunts excess current to earth when the lights are offKnowledge wrote:When you switch on the lights, the demand for extra electricity causes drag on the flywheel and this slows the engine. If it was a bit borderline already on the tickover, the extra drag will tip it over the edge.
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WINTERMODEL150
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Hi,from my experience its either the flywheel that needs re-magetising or the spark plug gaps too big.
Try closing the plug gap up a little and see what happens.
Dean
Try closing the plug gap up a little and see what happens.
Dean
With a 12v regulated system that is correct, but with a standard balanced 6v system there is no load until the lights are switched on.coaster wrote:Are you sure about that Martin? I thought that the load on the stator was constant and the voltage regulator shunts excess current to earth when the lights are off
Out of interest, I believe, with modern SCR based regulators the load placed on the stator is greater with the lights off than with the lights on. Most aren't designed to be used without a load, especially DC types, so if not using a battery a capacitor needs to be fitted to prevent overloading the stator and reg.