Commando Chronometric

Onder

Onder

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Anybody able to tell me what the actual chronometric was used on Police Commandos? Not to forget the required gearbox for said head too. I feel the need to put one on my 850 Mk2.
 
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SC5301/44 Smiths Chronometric Speedometer Norton Commando Interpol | eBay

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"1000" turns per mile would be the normal 15:12/1.25:1 gearbox drive ratio and there's no alternative ratio listed in the parts books for the Interpol.
 
Interesting that it uses the magnetic ratio for the 150 not the 1600 for the magnetic 125. I see also that seller notes required hybrid cable. Prices sure have escalated!
 
L.A.B. said:
www.ebay.com

SC5301/44 Smiths Chronometric Speedometer Norton Commando Interpol | eBay

Find many great new & used options and get the best deals for SC5301/44 Smiths Chronometric Speedometer Norton Commando Interpol at the best online prices at eBay! Free shipping for many products!
www.ebay.com

"1000" turns per mile would be the normal 15:12/1.25:1 gearbox drive ratio and there's no alternative ratio listed in the parts books for the Interpol.
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Interesting. How is the reset stem dealt with on cup holder?
 
A hole. Some chronos have the reset shaft on the bottom of the instrument with a long flex line.
 
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