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z10
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« on: October 12, 2013, 04:12:53 PM » |
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I went out for a ride this afternoon and for the first time took along a GPS to check my speedometer.
At an indicated 85mph I'm doing about 76, so the speedometer is reading almost 10mph faster than actual. How to I correct this?
Thanks in advance.
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1969 Camaro Z/10 Pace Coupe
1972 GMC Short Step
1979 Mazda RX7
1999 Valkyrie Standard
2004 Mazda RX8
2006 Corvette Z06
2010 BMW 650i
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BuzzKill
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« Reply #1 on: October 12, 2013, 07:18:03 PM » |
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I could be talking out of my butt, but I think alot would have to do with tire size. What are you running on the front? Also I don't think there is an adjustment, but again I could be wrong. My wifes bike has OEM tires I think, and hers indicates faster as well.
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Jess from VA
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« Reply #2 on: October 12, 2013, 08:05:21 PM » |
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wizard -vrccds#125
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« Reply #3 on: October 12, 2013, 08:05:51 PM » |
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Thy are all that way. The only way to correct it would be a drive gear change and none are made. You can just go by your GPS as I do on both of mine.  |
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R J
Member
Posts: 13380
DS-0009 ...... # 173
Des Moines, IA
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« Reply #4 on: October 12, 2013, 08:55:43 PM » |
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I go by the GPS in all my vehicles.
The Dodge pickie up is the closest to the GPS.
There is only 2 mph difference in them.
The Toyota Highlander is about 8 mph fast.
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44 Harley ServiCar   |
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hueco
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« Reply #5 on: October 12, 2013, 09:14:28 PM » |
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My best friend is off by 5 mph. GPS reads 70 mph. Fat Girl's speedometer reads 75 mph. So on and so forth. NOW. I Know why I never got a speeding ticket.  |
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5_19
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« Reply #6 on: October 13, 2013, 05:17:16 PM » |
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Thy are all that way. The only way to correct it would be a drive gear change and none are made. You can just go by your GPS as I do on both of mine. My experience also. I also use a GPS to verify actual speed for different vehicles, and it varies a lot. |
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 Most motorcycle problems are caused by the nut that connects the handlebars to the saddle. IBA # 45723 2001 Honda Valkyrie Standard (Sold after 9 years) 2009 BMW R1200 GSA |
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Joevalk
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« Reply #7 on: October 13, 2013, 05:57:24 PM » |
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I fixed mine. 21" wheel. The speedo is rite on the money with a GPS  |
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z10
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« Reply #8 on: October 13, 2013, 07:29:25 PM » |
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Well, then GPS it is. Really cuts down on my top end bragging though.  |
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1969 Camaro Z/10 Pace Coupe
1972 GMC Short Step
1979 Mazda RX7
1999 Valkyrie Standard
2004 Mazda RX8
2006 Corvette Z06
2010 BMW 650i
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5_19
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« Reply #9 on: October 14, 2013, 05:12:43 AM » |
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Well, then GPS it is. Really cuts down on my top end bragging though. In Texas it ain't bragging if it is so! " I topped out at 130 mph according to my speedometer". |
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Most motorcycle problems are caused by the nut that connects the handlebars to the saddle. IBA # 45723 2001 Honda Valkyrie Standard (Sold after 9 years) 2009 BMW R1200 GSA |
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Red Diamond
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« Reply #10 on: October 14, 2013, 10:36:58 AM » |
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No adjustment necessary for me, when I see 75, I slow down to 70. Guess that's why it takes me so long to get anywhere.
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 If you are riding and it is a must that you keep your eyes on the road, you are riding too fast. |
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z10
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« Reply #11 on: October 14, 2013, 01:18:59 PM » |
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Well, then GPS it is. Really cuts down on my top end bragging though. In Texas it ain't bragging if it is so! " I topped out at 130 mph according to my speedometer". You know you are correct! I think my valk has the potential to go ballistic. Because after all....it's a Texas Valk!  |
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1969 Camaro Z/10 Pace Coupe
1972 GMC Short Step
1979 Mazda RX7
1999 Valkyrie Standard
2004 Mazda RX8
2006 Corvette Z06
2010 BMW 650i
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