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Getting ready to try some VLF coil winding. Only 6 hooks shown, but use as many as needed to acquire shape. The board is 42cm/16.5 inch, so will make up to a 15 inch coil.
I marked various size circles on the face for size reference. Wire spindle is clutched with a spring and large washer. Alignment bobbin made from the cutout piece from board centre, with pieces cut from a fridge shelf with a holesaw epoxied either side.
Had to remove crank to take inner sprocket off- that's now part of the spacer for the winding board. Crank arm was cut off in-situ.
Handle-bars clamped into seat bracket wit a tin spacer shim. Quite stable.
$5 counter from fleabay, mounted with zip-ties, on rubber tube around frame to stop it slipping, but allow some movement and shock absorbtion. No more losing count of winds.
All very technical.
I marked various size circles on the face for size reference. Wire spindle is clutched with a spring and large washer. Alignment bobbin made from the cutout piece from board centre, with pieces cut from a fridge shelf with a holesaw epoxied either side.
Had to remove crank to take inner sprocket off- that's now part of the spacer for the winding board. Crank arm was cut off in-situ.
Handle-bars clamped into seat bracket wit a tin spacer shim. Quite stable.
$5 counter from fleabay, mounted with zip-ties, on rubber tube around frame to stop it slipping, but allow some movement and shock absorbtion. No more losing count of winds.
All very technical.
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