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Tachometer drive gearbox ratio

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Tachometer drive gearbox ratio

Postby pierodn » Tue Jan 10, 2017 1:04 pm

Hi.
Is the TACHOMETER DRIVE GEARBOX 2:1 or 1:1 ratio?
Is it the same of the early 1968/9 Commando?
BG1508/5 that is 1:1 wiith what tachometer ratio works well?
Thank you.
Piero

pierodn
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Re: Tachometer drive gearbox ratio

Postby Ron L » Tue Jan 10, 2017 2:32 pm

Hi Piero,
I believe you already asked this question and Thomas and I both confirmed it was a 1:1 ratio. The early Commando drive is a 2:1 ratio. The P11/Atlas tachometers are 2:1 ratio instruments while the Commando tachometers are 4:1 ratio.
Ron L
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Re: Tachometer drive gearbox ratio

Postby pierodn » Wed Jan 11, 2017 12:08 am

Hi Ron,
thank you so much.
Pieo

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