UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

kernowcam · 3rd Apr 2019, 10:41 am

I am trying to sort an old dwell meter with a bad coil on the 6" moving coil meter.
I have removed the windings and worked out I have a 10mm square former, brass, 337 turns of .04mm copper wire. On the former it gives 40mm per turn. Total 13.5m.
This gives me the original ohms of coil

Any advice on winding this coil neatly?
I can make a ten mm carrier for the former.
I have an old manual sewing machine with a bobbin winder with a four mm shaft. Also a lathe available.
I have sourced the wire.

3rd Apr 2019, 10:41 am	#1
kernowcam Pentode Join Date: Dec 2011 Location: Camelford, Cornwall, UK. Posts: 188	Coil winding advice I am trying to sort an old dwell meter with a bad coil on the 6" moving coil meter. I have removed the windings and worked out I have a 10mm square former, brass, 337 turns of .04mm copper wire. On the former it gives 40mm per turn. Total 13.5m. This gives me the original ohms of coil Any advice on winding this coil neatly? I can make a ten mm carrier for the former. I have an old manual sewing machine with a bobbin winder with a four mm shaft. Also a lathe available. I have sourced the wire.