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BBY755
PostPosted: Mon Sep 08, 2014 6:10 pm 
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Hi all,

Had my speedo reco'd and calibrated a few years ago and recently using GPS found that at 100kph shows 62mph (in between needle wobbles!) which is correct.

Problem is, it is out at most other speeds....e.g at 80kph is showing 45mph instead of 50mph on the speedo.

Is it the speedo drive gear? Had to put a new one in years ago before I had the speedo showing anything and then had it calibrated.

Thanks for any clues....

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ex Cooper S Mk2, various Morris 1100s, 1300s, 1500s, Leyland Sherpa!
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Morris 1100
PostPosted: Mon Sep 08, 2014 6:22 pm 
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I think it is the speedo itself.
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BBY755
PostPosted: Mon Sep 08, 2014 6:34 pm 
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Bugger,

Thanks Morris. Hope the bloke is still there at the instrument repair shop!

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ex Cooper S Mk2, various Morris 1100s, 1300s, 1500s, Leyland Sherpa!
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Morris 1100
PostPosted: Mon Sep 08, 2014 6:56 pm 
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How accurate is the odometer? If the odometer is correct the speedo gear is the right ratio.
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BBY755
PostPosted: Mon Sep 08, 2014 7:22 pm 
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Good point.
Need to do a run with the GPS to check that.....

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ex Cooper S Mk2, various Morris 1100s, 1300s, 1500s, Leyland Sherpa!
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