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Magneto Nuts

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Magneto Nuts Empty Magneto Nuts

Post by Woodsman Fri Jan 29 2021, 16:54

Could someone tell me what the thread is on the thumb nuts for a WICO/WIPAC Series A magneto - its difficult to measure. I'm guessing not metric and I've tried UNF spark plug nuts. The diameter seems about right but jams after a couple turns so maybe wrong pitch?

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Post by Robotstar5 Fri Jan 29 2021, 23:27

BA thread?

Have you got a pic of it, if I have similar I could measure or test fit from my box of "fasteners that are bound to come in handy one day" Very Happy

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Post by Woodsman Sat Jan 30 2021, 11:23

Hi Stuart,

Don't have the nut and trying to measure the screw in the magneto is tricky. Have tried BA without success.

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Post by Robotstar5 Sat Jan 30 2021, 11:58

Is it this type?

Magneto Nuts Wd2_1510

If it is, I can take the "nut" off mine a try to match a pin/bolt to it to work out the thread.

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Post by Appletop Sat Jan 30 2021, 12:34

Think the general opinion is it is a cycle thread.
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Post by Woodsman Sat Jan 30 2021, 16:05

Robotstar5 wrote:Is it this type?  

Yup. It's like the one about half way down this page Part No #16-463 but no longer available

http://www.villiersparts.co.uk/wip.html

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Post by Robotstar5 Sun Jan 31 2021, 20:44

Well they are a tricky one to measure. best I could do was 0.17" OD and high 20's pitch, had to give in due to frozen fingers Very Happy

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Post by Gaudin98 Mon Feb 01 2021, 09:00

Try 3/16'' x 26tpi. This is British standard brass thread. Seem to remember that it is the thread for the mag top connection. Or poss the next size down.

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Post by Andrew1971 Mon Feb 01 2021, 12:02

@woodsman
Are you after one of those magneto thumb nuts.
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Post by Woodsman Mon Feb 01 2021, 16:07

Andrew1971 wrote:@woodsman
Are you after one of those magneto thumb nuts.
Andrew

I certainly am - can you help?

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Post by Andrew1971 Tue Feb 02 2021, 18:00

You should have a PM
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Post by Woodsman Wed Feb 03 2021, 10:25

PM sent - Cheers.

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Post by Woodsman Fri Feb 05 2021, 17:59

Many thanks Andrew. Fits a treat.

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Post by Andrew1971 Sun Feb 07 2021, 14:20

Excellent glad I could help.
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