R90S tachometer ratio 2:1?

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gwagoner
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Joined: Fri Aug 28, 2015 6:35 pm

R90S tachometer ratio 2:1?

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Can anyone confirm if the tachometer ratio is 2:1 or something else?

I have a R60/2 conversion with a 1975 R90S engine and would like to add a tachn. Blue Moon sells tach's for /2 that may work and come in either 2:1 or 4:1

Thank you for the help

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gwagoner
Posts: 20
Joined: Fri Aug 28, 2015 6:35 pm

If anyone is interested, I

Post by gwagoner »

If anyone is interested, I hear that the ratio is indeed 2:1 from my local airhead instrument restorer.

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