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Re: Speedo accuracy



At 07:29 PM 1/21/01 +0000, Mike Bostock wrote:
>There is a >10% error - the speedo reads high - I was beginning to wonder
>why car drivers were trying to crawl up my exhaust whilst I was observing
>speed limits in 40mph zones.
>Thus at a true speed (according to NASA) of 70mph the speedo indicates
>nearly 80mph; at a true speed of 40mph the speedo reads 47mph.

Most of the previous posts have put numbers anywhere from +5% to +10%. 
That's why so many riders use the Sigma bike speedos.

Yours seems to be off enough to warrant a dealers look.

- - Eric


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