speedo and tac swap

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05 Oct 2013 17:52 #608875 by wolfey
speedo and tac swap was created by wolfey
im looking at swapping to a smaller tac and speedo does any one know what the ratio is for a 1980 kz 1000 ltd im using a 100-90/19 front tire
building something is better then just buying someone elses blood sweat and tears

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10 Oct 2013 02:42 #609472 by btchalice
Replied by btchalice on topic speedo and tac swap
speedo should be 2240:60
Terry Meyer / Wichita KS
76 kz900 w/1000 motor TWZTD
I am not driving too fast, I'm flying too low.

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10 Oct 2013 09:47 #609497 by Jrbrownie00
Replied by Jrbrownie00 on topic speedo and tac swap
what would it be running a 110 90 19?
82' kz750 ltd.

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10 Oct 2013 12:53 #609527 by Stazi
Replied by Stazi on topic speedo and tac swap
100/90R19 has a rolling radius of 662.6mm

110/90R19 has a rolling radius of 680.6mm so a 1.027 increase in the diameter.

It's a 2.7% difference so I wouldn't worry about the difference.
82 KZ1000-K2 LTD

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24 Oct 2013 20:19 #611071 by wolfey
Replied by wolfey on topic speedo and tac swap
im still looking at speedos and still a little confused im seeing 2 to 1 and 1 to 1 ratio can any one help if theses wont work can u tell me what will
building something is better then just buying someone elses blood sweat and tears

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