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Richard Greene
Frequent User
Username: benzjag

Post Number: 76
Registered: 12-2012
Posted on Tuesday, 23 January, 2018 - 02:49 pm:   Edit PostDelete PostView Post/Check IP

Would anyone know the direction the speedometer cable turns (clockwise or counter-clockwise) at the cluster itself on a Cloud 2? Also when the cable leaves the transmission?

Thanks!

Richard
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David Balfour
Frequent User
Username: sidchrome

Post Number: 85
Registered: 2-2009
Posted on Tuesday, 23 January, 2018 - 05:06 pm:   Edit PostDelete PostView Post/Check IP

Hi Richard, mechanical speedometers typically do not use any type of gear mechanism to drive the speed indicator which usually moves in a clockwise direction as the speed builds. The faster the inner cable rotates, the more force is applied to drag the needle against its opposing spring. Therefore the cable inner spins clockwise looking at the end of the cable when disconnected from the speedo. as the cable is one piece all the way to the other end, it must rotate the same direction along its entire length. At the gearbox end then, the piece in the gearbox must also rotate clockwise. Therefore, looking at the end of the cable disconnected at the gearbox end, if you wanted to rotate the cable manually to operate the speedo you would need to rotate it anti-clockwise. Does that seem logical? A worm gear is often situated on the same input shaft to drive the odometer assembly. Perhaps someone can confirm that the Smiths speedometer is equally as uncomplicated. I'll see if I can find a breakdown that confirms the statements above.
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Paul Yorke
Grand Master
Username: paul_yorke

Post Number: 2000
Registered: 6-2006
Posted on Wednesday, 24 January, 2018 - 07:54 pm:   Edit PostDelete PostView Post/Check IP

Richard, whichever way your speedo turns to increase speed.

It uses magnetic drag to spin the needle.

I will leave you to work out which end is turning which way as you look at the cable ends.

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