I know that from 1923 to 1927, 3/16 flat copper wire was used for the mag coils and that it is roughly 0.20 thick. (Please tell me if I am incorrect on this).
Does anyone know where I might find what the temper may have been on this copper or was it just basic soft copper?
Thanks in advance
Randal
Randy, it would have been annealed or soft to begin with. Copper gets hard as it ages or is used. I reuse the old windings, first by putting the whole mag ring in my heater and burning off the old insulation and oil. This will melt all the old solder off and anneal the copper so that you can stretch and rewind it easily. I put the ring in the heater when my fire has burned down to a good bed of coals, probably could use a charcoal grill with the same results, Have fun . KB
I do believe that I found flat copper wire that can be used for the magneto. Google "stained glass copper foil" and you should easily be able to find it.
Also, 0.20" sounds to be too thick. I have some magneto wire that I put on a spool for when I redo my mag ring. I don't have any real way to measure it, but it looks more like 0.02". Maybe you just missed a digit?
I had a clean un-restored coil ring handy and measured the copper connection strand for seven of the 16 strands.
The copper strands are totally bare and clean.
My measurements were .020, .022, .024, .032, .034, .036 and .042 in different sectors.
I then measured a few blades on my feeler gauge to check the accuracy of the micrometer.
Now I can say for sure that it does not seem to be very consistent and might be around .030 on an average.
Thanks everyone, great information.
I was looking at the copper foil for stained glass as well but most is only copper plate and extremely thin.
I'm not sure yet but I may have a lead on some spooled flat copper strip. I just wanted to make sure of the dimensions and temper.
Does anyone know what the best material is to use between each layer of copper?
Thanks again
Randy
I've always been wondering about Kapton tape, like this: http://www.ebay.com/itm/5-pcs-High-Temperature-Kapton-tape-for-BGA-10mm-0-4-inch -wide-x-100-Feet-long-/280847205254?pt=LH_DefaultDomain_0&hash=item4163cc4386
It's good for extremely high temperatures, it's very thin, unlike the glass cloth tape many recommend, and it's impervious to just about any chemical known to man. Plus, it's VERY inexpensive!
Hint... The flat copper wire starts as regular round 14 gauge copper wire that you can buy anywhere.
Adam, GET BACK TO WORK!!!!! ;)
Adam, are you talking about using 14 gauge round wire for the coils or extruding 14 gauge round wire into flat wire?