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 Post subject: Speedometer
PostPosted: Thu Jan 02, 2020 8:37 pm 
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Just completing a rebuild and regrettably the speedo isn’t working, the trip is working but not the needle
Any advice guidance or options appreciated.. regards david..


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 Post subject: Re: Speedometer
PostPosted: Fri Jan 03, 2020 11:48 am 
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If the odometer is working, then there is nothing wrong with the cable, so the problem is internal to the speedometer.

After a period of non-use, the most likely cause is corrosion or debris in the small air-gap between the drag cup attached to the needle and the housing. (If the problem was in the air-gap between the rotating magnet and the drag cup, the needle would be banging on the max-reading end-stop ... ) It might also be a jammed drag-cup bearing.

Either way, you need to dismantle the speedometer, by carefully bending back the crimped lugs holding the bezel onto the body, undo the screws holding the innards into the casing, and inspect.

Roger.


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 Post subject: Re: Speedometer
PostPosted: Fri Jan 03, 2020 8:44 pm 
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Thanks Roger much appreciated..


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