Sprocket kit threw off speedo
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Sprocket kit threw off speedo - 5/27/2008 8:09:04 AM
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ceresia
Posts: 4
Joined: 5/13/2008
Status: offline
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Hey all,
I just installed a vortex -1/+2 sprocket kit. I am very pleased with the performance but I ride along with my buddies and notice that I have a 4 or 5 mph gap at 35mph. I didn't test it past this but pretty sure that at even higher speeds 130+ it gets around 10mph off.
Any way of fixing this or tuning it out?
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RE: Sprocket kit threw off speedo - 5/27/2008 8:13:47 AM
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Lrn2Go
Posts: 1344
Joined: 8/2/2007
From: Oklahoma City
Status: offline
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Anytime you change your gearing, it throws the speedo off. You'll also run in higher/lower RPM's at any given speed than the "Stock" setup. Thats why they make a "Speedo Healer". Just google that and you'll get a ton of hits. It lets you re-calibrate your speedo to make up for your changes in gearing. I bet your further off than you think you are... friend of mine just did -1 on the front on his F4I and about every 10 miles an hour he "looses" one. (AKA, at 10 he's doing 9, 20 he's doing 18, etc etc)
How's the new gearing feelin' for ya?
_____________________________
 ~I''m not riding fast, I''m flying low.~
My CBRForum Buddy.
SchiraF4I - Bike Stolen. :(
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RE: Sprocket kit threw off speedo - 5/27/2008 8:18:13 AM
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ceresia
Posts: 4
Joined: 5/13/2008
Status: offline
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I wanted the sprocket kit for better acceleration and well, to get it up easier.
It does just that. I don't like to clutch it up so I just power it up, and the sprocket kit does help. I ride with a friend that has a R1 and he usually leaves me when we play around and now I can actually keep up a lot easier then before, I don't feel like weak sauce 
But I think you are right about 1 mph per 10. I hit 158 the other day and it didn't feel like it...so I need to take a look at this healer.
_____________________________
2003 CBR600 F4i
- Yoshimura RS-3
- Vortex -1/+2 sprocket set
- Clear grips
- Tankpro gloss black tank protector
- The ol' Dunlop Qualifier!
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RE: Sprocket kit threw off speedo - 5/27/2008 8:35:12 AM
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ceresia
Posts: 4
Joined: 5/13/2008
Status: offline
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Thanks guys, I checked out the website and did the estimated calc and apparently I am off -14.9%
eek! 
_____________________________
2003 CBR600 F4i
- Yoshimura RS-3
- Vortex -1/+2 sprocket set
- Clear grips
- Tankpro gloss black tank protector
- The ol' Dunlop Qualifier!
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