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jan.mevis(at)informavia.b
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 Posted: Sat Jun 25, 2011 2:41 am Post subject: mag coils |
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A specialized company is trying to make two prototypes of a new mag coil for me. I gave them three original Russian coils for measurement and reverse engineering.
As expected, this is much more difficult than it looks. There are more than 13000 windings on the secondary, made from a very thin wire. The specialist who’s studying it presumes that it may have been wired BY HAND.
Since the wire is so thin, the normal procedures of impregnating with resin (or more modern insulation products) under high pressure is not evident. Although this company is very well equiped, they will have to subcontract the winding of the coil. Because it is so thin, the wire will be expensive and rather difficult to find. But we’ll manage that.
The Russians (and the Chinese I suppose) applied a separate insulation layer after each two layers of windings! You can imagine the work…
We did not find an internal capacitor, but there’s a tiny aluminum plate, that connects one end of the primary and the secondary winding. Since it can’t be soldered, it is simply wound a few turns around this very small aluminium part.
As soon as I have the prototypes (this will take some time) I’d liked to test run them, if still allowed to fly. Otherwise I might ask for volunteers in the free world at the other side of the ocean.
Maybe at the end I’ll have to conclude that this project is not economically viable, but at least I’ll have the design data of the coil.
Best regards,
Jan
RA2005K Yak 50
Belgium (not a free country, but a banana-republic)
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jill(at)m-14p.com
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| Posted: Sun Jun 26, 2011 5:05 am Post subject: Mag coils |
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Jan,
We are doing this here. You are correct, it is expensive and difficult. We
also perform a points conversion, as points are hard to obtain.
Jill
M-14P, Inc.
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