sprockets verses spedo gearing

  • hungarian41-78
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10 Oct 2005 19:15 #524 by hungarian41-78
sprockets verses spedo gearing was created by hungarian41-78
A friend and I got into a discussion about swapping sprockets, the question came up as to how this would affect the spedo reading. I for one have no answer, can someone enlighten me?? Thanks in advance John

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10 Oct 2005 19:29 #532 by Bud1
Replied by Bud1 on topic sprockets verses spedo gearing
It shouldn't affect it at all on a bike. My speedometer cable is routed to the front wheel. No matter what sprockets (or gearing) you have it won't effect your speedometer reading.

This is different than on a car or truck where the speedometer cable is routed to the rear of the transmission. In this case any change made to the vehicle's drivetrain between the speedometer sending unit and the rear wheels (including a change in tire size) would definately change the speedometer reading.

Hope this answers your question! B)

<edited after this point>

Come to think of it, I wish the auto makers would hook their speedometers up to the front wheels (or rear wheels of front wheel drive cars). Then I could easily swap out the rear differential gears with no change to my speedometer. Might have to see if I can rig something up. :blink:

Post edited by: Bud1, at: 2005/10/10 22:32

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10 Oct 2005 19:39 #535 by hungarian41-78
Replied by hungarian41-78 on topic sprockets verses spedo gearing
Thanks for the quick reply, Man I feel stupid now (how come I didn't think of that one "FRONT WHEEL". Thanks Again John

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11 Oct 2005 19:16 #865 by Bud1
Replied by Bud1 on topic sprockets verses spedo gearing
:P No need to feel stupid. When I started to reply to your post I first started to go into the whole gear ratio and tire size thing just like a car. Then all of a sudden I remembered the speedo cable I just ordered for my bike hooks up to the front wheel! So I guess we can both feel stupid!:blink: :woohoo:

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11 Oct 2005 19:21 #872 by KZQ
Replied by KZQ on topic sprockets verses spedo gearing
No effect unless you're talking about an old BSA. The gearing you're speaking about is on the rear while every Kawasaki I've known has a front wheel driven speedometer.
KZCSI

www.KZ1300.com
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
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1985 ZN1300

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12 Oct 2005 17:15 #1155 by hungarian41-78
Replied by hungarian41-78 on topic sprockets verses spedo gearing
I ride a 1978 Police 1000 C1A, The guy I was talking with rides a 97 GXSR 750 with a 99 motor shoved in it. He's still learning about his bike, mine I got to know kinda well over the summer. Thanks to this list and the folks who spend time here verses riding there bikes, mine runs rather well. for a stock old cop bike.

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