Powerdynamo brings new ignition & light
to your vintage motorcycle
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Powerdynamo brings new ignition & light |
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| If (for whatever reason) a rotor/flywheel comes to sit too low, it will touch and destroy the stator coil under it. | |
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| This is a typical damage: The rivets of the rotor, internally the lowest point, have touched the upper surface of the larger black coil and scratched it deeply. As the extremely thin coil wire runs there, it gets cut and ignition fails. The coil is irrepairable and has to be replaced. Click the picture to enlarge and you will see the damaged wire as small coppery spots under the black surface. |
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You can check the space
by putting some plasticin (alternatively some bubble gum) on top of the black coil and than setting the rotor on (tighten it!) You should always check that after your engine has been repaired as the rotor now might sit differently. |
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| In the case shown here there was no space at all left between rotor and
coil.
You see a part of the rivet has gone right through the plasticin and was in touch with the coil. No coil will survive that. |
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| Here you see a rivet impression in the plasticin.
Make sure in that test that you set the rotor in a way that a rivet will be at the coil. |
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You may check clearance by checking thickness of the plasticin.
There is no specific value for how much clearance there has to be, but it has to be clearance and a small room for maneuvre is a good thing as the rivets might have different hight. |
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| back to trouble shooting | |
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