Drag Racing Discussions > Electronics

Mechanical overspeed protection

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32bantam:
We have a points mag with two tach drive ports.
 We are looking for a mechanical, cable driven overspeed device. I found a article on a Syncro-Start overspeed governor. I was listed at 3000-3825 rpms. At 1/2 engine speed that would be 6000-7650. Not sure if we could even find one.
Anyone have any experience using on of these?
Thanks...

gordon:
Still have an old cable drive rpm limiter that went with my Jones tach and Magneto. They cam in two rpm ranges.  See them on ebay now and then . Can be very pricey . Worked well for vintage tech.

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