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Unread postPosted: Wed Jun 13, 2012 3:41 am 
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Joined: Tue Jun 12, 2012 7:35 pm
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Real Name: anthony
Sex: Male
Years Riding: 10
My Motorcycle: 02 gsxr 750
Hey everyone quick question... I recently changed the front and rear sprockets on my 02 gsxr 750. I put on a 520 conversion +2 -1. After doing so the bike rides great, no problems with the instalation, except for my speedometer. The speedometer is running slow but not consistantly about 25 mph under at highway speeds and 7 mph slower in residental areas. Any ideas of ways to calibrate the speedo or any other suggestions? Any help will be great! Thanks in advance - amarino


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Unread postPosted: Wed Jun 13, 2012 6:53 am 
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Joined: Wed Aug 16, 2006 6:46 pm
Posts: 5160
Location: Colorado Springs, CO
Real Name: Ryan
Sex: Male
Years Riding: 4
My Motorcycle: 2005 Kawasaki Z750S
Yup, speedo-healer.

Your speedometer operates off of how many times the shaft running the front sprocket rotates per given time period (minute, second, hour, etc). From the factory it's set at a certain ratio because it takes X number of times turning the countershaft sprocket to turn the rear wheel one time. When you change your sprockets, it becomes Y amount of times, so the speedometer is off. The speedohealer plugs in between the two, you put in the stock ratio, your ratio, and it adjusts the signal so that your speedometer is now happy.

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Have owned - 2001 Suzuki Volusia
Current bike - 2005 Kawasaki Z750S
MMI Graduation date January 9th, 2009. Factory Certifications in Suzuki and Yamaha


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Unread postPosted: Wed Jun 13, 2012 3:45 pm 
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Joined: Tue Jun 12, 2012 7:35 pm
Posts: 2
Real Name: anthony
Sex: Male
Years Riding: 10
My Motorcycle: 02 gsxr 750
Thank you that's very helpful


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