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RacerX · 07-19-2008, 09:35 PM

The speedo on most bikes is wrong . 10% ia about average. you think you are going faster than you are. On the VFR as on many modern bikes the speed pick up is located on the engine sprocket not the wheel. So if you change the gear fron a stock 16 tooth front sprocket to a 15 tooth sprocket .Then the speedo is way off. like going down th eroad at 55 and the speedo read 85.
The answer is a thing called a speedo healer. there are a couple out there . The one I put on the VFR is called a yellow box it will correct the speedo error by taking the signal fron the speedo and converting it to signal that makes the speedo read correctly. Plus the model I got has a little button that will save the top speed recorded.

07-19-2008, 09:35 PM	#3 (permalink)
RacerX Senior Member Join Date: Sep 2006 Last Online: 11-28-2008 03:58 PM Location: Baltimore My Ride: 2008 250 ninja 2003 ninja250 2005 zzr 600 2005 sr 50 2006 VFR ABS Posts: 144 Thanks: 0 Thanked 4 Times in 4 Posts	The speedo on most bikes is wrong . 10% ia about average. you think you are going faster than you are. On the VFR as on many modern bikes the speed pick up is located on the engine sprocket not the wheel. So if you change the gear fron a stock 16 tooth front sprocket to a 15 tooth sprocket .Then the speedo is way off. like going down th eroad at 55 and the speedo read 85. The answer is a thing called a speedo healer. there are a couple out there . The one I put on the VFR is called a yellow box it will correct the speedo error by taking the signal fron the speedo and converting it to signal that makes the speedo read correctly. Plus the model I got has a little button that will save the top speed recorded. __________________ I spend all my money on motorcycle racing. the rest goes to waste.