Posted in wrong forum, asked mods to delete original
I have a 900 ohm solenoid from a relay I wanted to rewind.
The dimensions of the electromagnet are 1.2 inch by 0.7 inch and the impedance is 900 ohms, it actuates a HP relay powered by 34V on a RC time delay circuit.
The reason I took it apart is because it was showing low resistance to the chassis (20 meg) while the sister unit shows the usual infinity.
The wire is very thin, measuring 0.109 mm on micrometer, which I believe corresponds to 38AWG
https://www.coonerwire.com/magnet-wire/Is there a off the shelf cheap tool that can help me do this?
Its about 1500 feet of wire to wind.
I thought this tool might be good.
https://www.amazon.com/PanelTech-Purpose-Electric-Machine-Counter/dp/B07FY9VVQF/ref=asc_df_B07FY9VVQF/?tag=hyprod-20&linkCode=df0&hvadid=242034450866&hvpos=&hvnetw=g&hvrand=4625980874370029592&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9003445&hvtargid=pla-597484096296&psc=1The shaft is 1/4 inch and the original part # is A-121907 (900 Ohms) By C.I. Clare & Co
Like I don't want to buy that coil winder, I feel like I got jumped by this coil anyway. Last thing I was expecting to be bad because it looks great. I thought to just mount it in a drill and try to do it by hand , and hang a small weight on a rubber clasp over the wire so each time I wind a layer I can leave it tensioned. I don't plan on making any more then I have to, 1500 feet seems like alot, but since its just a relay I was going to pack it in to the same dimensions and hope it works.. so I don't need the turn counter.
I also plan on varnishing this, and putting a teflon sleeve over the shaft, I think. The original one was not varnished so when I popped the shaft out to see what was going on, the whole thing failed catastrophically. I was going to use 38AWG remington brand polyamide wire (200C rating) that will be chemically stripped.And I think the wire smelled a little funny.
I can replace it with 2x relays and some kind of time delay circuit, but I thought why not try to keep it original, its nice.. and I get to buy some magnet wire and use the transformer varnish I have...