[magestyk]

Hi everyone, I'm the new cherry on the forum. Been ridding bikes for a while but I havent messed with all the tech stuff.
Last week I got a Specialized Rockhopper Pro 29er and today I bought a Sigma 1009 STS wireless Comp. to mount on the bike.

Do you know what numbers to plug in? When I look at the manual it dont show the wheel size that equals to the numbers.
The tire on the bike(Specialized The Captain) says 52-622 on the side does it translate to a 700x??? Wheel size or something?

Any help would be helpful, thanks everyone.

 

[shiggy]

Hi everyone, I'm the new cherry on the forum. Been ridding bikes for a while but I havent messed with all the tech stuff.
Last week I got a Specialized Rockhopper Pro 29er and today I bought a Sigma 1009 STS wireless Comp. to mount on the bike.

Do you know what numbers to plug in? When I look at the manual it dont show the wheel size that equals to the numbers.
The tire on the bike(Specialized The Captain) says 52-622 on the side does it translate to a 700x??? Wheel size or something?

Any help would be helpful, thanks everyone.

Do a tire rollout for the actual distance you need. The computer instructions should outline how to do it, or go here: http://www.sheldonbrown.com/cyclecomputer-calibration.html

 

[p51mustang]

Specialized 29er tire rollout

I have a new Specialized 29er Sport Disc and thanks for the info on how to find 2.0x29 settings for my Cateye computer. I'm new to this site and this is my first post.

 

[bicycletech]

I work in a shop and ride a 29er, for sigma 1009 the number your looking for 2190.

 

[mtnbiker72]

Using the roll out method is best for accuracy, but just for arguments sake lets just take 29" x 3.14 = 91.11". Then take 91.11" x 25.4mm/inch = 2314...this is your figure for Km/h on Sigma computers. To get the correct figure for Mph, you then take 2314 x .62 (miles per Km) = 1435...this should be the correct figure for Sigma computers set up in Mph. I've owned three Sigma computers and this is how they all worked.