2009 Speedometer is off by 10%

Old Dec 9, 2009 | 01:03 AM
  #21  
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My 07 reads high about 10% too but......

I figure Im getting the better part of the mileage log because the A$$ end of my 351 is spinnin all the time ...
 
Old Mar 17, 2010 | 03:03 AM
  #22  
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Originally Posted by petez

But one thing that *really* bugged my about the bike was that the +10% speedo error. As I really got bored with doing the mental math constantly I started looking around for an in-line digital speedo adjuster. There are a few out there, but I couldn't bring myself to part with over $100 to fix the problem. But then I found a real winner by http://www.12oclocklabs.com/ - less expensive than the competition, in-line with stock connectors (install was a snap and the instructions were easy-peasy), and the performance is rock-solid. Nicely packaged (it's *tiny*), and has a neat top-speed replay feature too. I managed a true 120kmh with no wind, and 130kmh with a slight tail wind.

Note that I have no connection with the company ... just a very satisfied customer (one that's not impressed very often).

Cheers,
Pete
I got the 12oclocklabs speedo adjuster and it works great. Thanks for the info Pete.
 
Old Mar 17, 2010 | 10:20 AM
  #23  
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Take it back to the dealer,demand they fix, and video the response for our amusement.
 
Old Mar 17, 2010 | 01:26 PM
  #24  
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So I was thinking how much bigger would the tire need to be to correct for a 10% error.
Tire my bike came with is an 80/90 26.67" diameter, rolling circumference of 83.78" So to correct the speedo it would need about 93.09" rolling circumference which is diamter of 29.63" or so. which would be something like a 100/110 or 110/100, or 120/91
Which I doubt exist and the 120 would probably be too wide.

available tires
90/90 D27.38 Circ 86.32" Which would bring the speedo to 7.8% over
100/100 D28.87 Circ 89.7" Which would bring the speedo to 3.7% over
 

Last edited by maninthesea; Mar 17, 2010 at 01:44 PM.
Old Mar 17, 2010 | 05:43 PM
  #25  
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I guess its easier to fix the speedo error on the new instrument cluster than it is on the old style. My fix was just to re-pluck the needle to correct it. It works, up to 55mph. Then it starts to read faster than actually. But that doesn't bother me too much. Since I drive the KLX slower than 55mph 98% of the time.
 
Old Mar 17, 2010 | 06:51 PM
  #26  
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I just used a GPS to see how much my speedo was out and then just remember that number. With the relatively small amount of on-road riding I do I couldn't be bothered to try and correct it.
If a person was to start checking the speedo's on all cars, trucks, etc you'd find most are not accurate.
As someone said earlier, I think the companies that build vehicles design them to read slower than the actual speed.
 
Old Mar 17, 2010 | 07:58 PM
  #27  
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Its the Odometer that bothered me most. For instance I was told to ride down this street for 10 miles then turn left.......... Odomoter would read 10 at the nine mile mark,I turned down the wrong road!
 
Old Mar 17, 2010 | 08:43 PM
  #28  
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Ah yes, I can see how that would be a problem. Could make for some very confusing calculations when using the Odometer for directions.
 
Old Mar 17, 2010 | 09:53 PM
  #29  
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Originally Posted by canklx
If a person was to start checking the speedo's on all cars, trucks, etc you'd find most are not accurate.
GPS, gotta love it. I managed to fix my Ranger's speedo to within +/- 1mph (+1mph @ 25mph, -1mph @ 65mph, 45mph is dead on).

As for the odometer on the KLX. That would be a bit aggervating to know, but at least maintence gets done a little more often.
 

Last edited by LearjetMinako; Mar 17, 2010 at 09:55 PM.
Old Mar 17, 2010 | 10:31 PM
  #30  
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Originally Posted by LearjetMinako
I guess its easier to fix the speedo error on the new instrument cluster than it is on the old style. My fix was just to re-pluck the needle to correct it. It works, up to 55mph. Then it starts to read faster than actually. But that doesn't bother me too much. Since I drive the KLX slower than 55mph 98% of the time.
LeerJet
No familiar with "replucking the needle" could you elaborate?
 

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