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Author Topic: sat nav vs. speedo  (Read 1842 times)

Offline bob23

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Re: sat nav vs. speedo
« Reply #10 on: 01 April 2012, 13:51 »
Quote from: AlexMozza on 30 March 2012, 21:49
I though speedos were out by +/- 3% anyway?

+/- 10% My car reads 79 Satnav says 70, car reads 60 Satnav reads 54.
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Offline boneybradley

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Re: sat nav vs. speedo
« Reply #11 on: 01 April 2012, 13:56 »
sat-nav isn't 100% accurate (due to signal delay etc)....... and modern speedo's should be more accurate than +/-10% as it's an electronic signal rather than a cog and cable
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