An Accurate Speedo - Steve Saunders Goldwing Forums

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post #1 of 4 (permalink) Old 07-05-2008, 11:50 AM Thread Starter
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In this day and age there is no excuse to have a speedo that's off by 5%
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post #2 of 4 (permalink) Old 07-06-2008, 10:38 AM
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I think it is a government regulation. I have checked the speed against cars and had them run exactly 70 and get behind them.....and I read exactly 70. Seems to be an universal regulation for all vehicles. Cars...bikes......all of them. Checked against the Zumo it is about 3 mph is my 2001 jeep cherokee. Kit

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post #3 of 4 (permalink) Old 07-13-2008, 07:42 PM
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I don't think the speedo error is linear. At 30-45 mph range it appears to be 4mph slower than indicated judging from the roadside radar trailers. I recently went through a radar display sign on the interstate at 75mph and it indicated my speed was 75mph. Up to that point I assumed the error was linear.

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post #4 of 4 (permalink) Old 07-18-2008, 03:17 PM
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My 86 is 10% slow at any speed checked against Garmin Nuvi 200.


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