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An Accurate Speedo
 Moderated by: wingnut, wexy, tanygaer, redbaron, Patch, mikef, MDKramer, AZgl1500  
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Burtsr
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Joined: Mon Apr 2nd, 2007
Location: Chicago, Illinois USA
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 Posted: Sat Jul 5th, 2008 05:50 pm1st Post
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In this day and age there is no excuse to have a speedo that's off by 5%

Kit Carson
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Joined: Wed Jan 30th, 2008
Location: Lexington, South Carolina USA
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 Posted: Sun Jul 6th, 2008 04:38 pm2nd Post
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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 slow.....as is my 2001 jeep cherokee.  Kit



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wrich479
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 Posted: Mon Jul 14th, 2008 01:42 am3rd Post
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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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2001 Valkyrie Standard Two Wheel HotRod
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scotthohio
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Joined: Mon May 12th, 2008
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 Posted: Fri Jul 18th, 2008 09:17 pm4th Post
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My 86 is 10% slow at any speed checked against Garmin Nuvi 200.



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86 GL1200 Aspencade (daily driver)
83 GL1100 Interstate (basket case in work)
82 GL1100 Interstate (sold to my brother)
GL1500 (maybe next year ....)

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