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Old 01-30-2006, 02:20 AM   #1
swim_ags
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speedo

ok, this might possibly be the world's stupidest question :icon_rabb , but i think my speedometer is off. i just had a bunch of stuff done to my bike, including a new chain and sprockets (down a tooth in the front), and was told that it wouldn't affect the speedometer. i don't know if it's just that i haven't gotten to ride for bout 7 weeks or what, but it sure as feels like i'm going a lot slower than what it's reading. my question is, what is the most reliable way to check for error, and is there a way to recalibrate it?
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Old 01-30-2006, 02:43 AM   #2
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Manually changing the sprockets on a motorcycle can change the characteristics of acceleration and top speed. Depending on the sprockets (teeth front/back), you will be putting twice as many miles or vise versa.
So in short if you don't call this effecting the speedometer your right, but IMO it dose affect the speedometer. As far as MPH it should be right on.


If you believe it to still be off, try one of the aftermarket digital readers. They run for a few hundred bucks off some store shelfs or online.
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Last edited by XxNaSDaQxX; 01-30-2006 at 02:53 AM.
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Old 01-30-2006, 09:35 AM   #3
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Most stock speedos are 6-8% high to begin with. Typical gearing changes make them 15% or more off.
So for every 1000 miles you travel the odometer actually reads 1150!

You can install a Speedo Healer to recalibrate it. We keep them in stock and it's $89.95 and $66.00 for installation and GPS verified calibration.


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Old 01-30-2006, 10:43 AM   #4
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i know that sprockets change acceleration and top speed...that's why i wanted to change them. you know what...i didn't think about the odometer issue. damnit. i guess i'm just confused b/c i thought the speedo read from the rotation at the front sprocket, and therefore, if it changes size, the speedo (MPH) would be wrong. it would just be nice to know how fast i'm actually going when i pass cops...tickets get expensive. thanks guys
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Old 01-30-2006, 10:33 PM   #5
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I went 1 down in the front and 2 up in the rear and my speedo was off so I put the speedo healer on mine and now it's right on the money. It's cheaper than tickets and you can recalibrate if you change it again.
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Old 01-30-2006, 10:46 PM   #6
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Just ask the cop to see the reading next time...









j/k I've heard good things about the speedo healer
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Old 01-30-2006, 11:05 PM   #7
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try a gps
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Old 01-30-2006, 11:13 PM   #8
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Quote:
try a gps
I've done that but they're hard to read at speed and your odometer still registers more mile than you ride.

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Old 02-01-2006, 02:16 PM   #9
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I tried just running a gps a long time ago. The SpeedoHealer is the way to go.
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