Gearing changes & Speedo readings

[Gaz]

The standard gearing on the XChallenge is 15/47. If I change it to 14/49 what effect will it have on the speedo reading and by how much?
The speedo reads from the rear.

 

[Gaz]

Ah, sussed it. The rear sprocket change has no effect so I guess it will just over-read a bit cos I've gone down one on the front..?

 

[John Armstrong]

I;m not saying you're wrong but I'd have a look at the below links, admitedly to a F650 single:

http://www.touratech-usa.com/shop/s...ession=touratech:C1C97D2109fcc03402UQs41E9B15

http://www.touratech-usa.com/shop/s...ession=touratech:C1C97D2109fcc03402UQs41E9B15

http://www.touratech-usa.com/shop/s...ession=touratech:C1C97D2109fcc03402UQs41E9B15

and maybe of most use to you directly:

http://www.touratech-usa.com/shop/b...ession=touratech:C1C97D2109fcc03402UQs41E9B15

 

[Gaz]

Thanks John.
I was being a bit vague, or blond, or both with that first post. I was concerned about speedo error rather than speed range. But since the bike detects speed from a slotted ring on the rear wheel, it won't have any effect on error on matter what sprockets I use

 

[John Armstrong]

Ah, now it's clear, hope the links were of interest anyway