Setting tire size on Sigma BC906 maybe a simple thing for someone that knows.
07-02-09 | 02:21 PM
#1
Thread Starter
Zeusmeatball
Joined: Jun 2009
Posts: 259
Likes: 1
From: CT
Bikes: 1976 Motobecane Nomade Sprint, 1988 Specialized Rockhopper comp, 1991 Schwinn Crisscross, 2009 K2 Zed 3.2, 2011 Trek X-Caliber Gary Fisher collection
Setting tire size on Sigma BC906 maybe a simple thing for someone that knows.
Hi, I just purchased a Sigma BC906 bike computer and it installed very easily and the set up went good as well until I got to tire size setting.
My tires say 26x2.10 on the side and in the booklet that came with the sigma that size is not listed, what is listed is 26x2.00 which gets set at 2114 on the computer and 26x2.125 which gets set at 2133.
is a 26x2.10 tire close enough to a 26x2.125 to use that setting? do any of you fine people know what the setting should be on a 26x210 tire? I was thinking of just shaving a couple numbers off of the 26x2.125 and like setting it to 2125 or something like that, would that be close enough to be fairly accurate? or am I missing something.
any opinions and or suggestions are greatly appreciated.
As Ever
Me
My tires say 26x2.10 on the side and in the booklet that came with the sigma that size is not listed, what is listed is 26x2.00 which gets set at 2114 on the computer and 26x2.125 which gets set at 2133.
is a 26x2.10 tire close enough to a 26x2.125 to use that setting? do any of you fine people know what the setting should be on a 26x210 tire? I was thinking of just shaving a couple numbers off of the 26x2.125 and like setting it to 2125 or something like that, would that be close enough to be fairly accurate? or am I missing something.
any opinions and or suggestions are greatly appreciated.
As Ever
Me
07-02-09 | 03:50 PM
#2
aka Phil Jungels
Joined: Apr 2005
Posts: 8,234
Likes: 91
From: North Aurora, IL
Bikes: 08 Specialized Crosstrail Sport, 05 Sirrus Comp
Take the large and small numbers, the difference is 19, divided by 125. Multiply the answer by 15, and add to 2114.
Simple extrapolation.
Simple extrapolation.
08-15-14 | 05:29 PM
#5
Newbie
Joined: Aug 2014
Posts: 4
Likes: 0
Very old post, but since I just discovered this link myself, I thought that I'd share it. My Sigma BC 906 has varied quite a bit from Google Maps and it has to be Sigma's own size chart. It seems to wrong across the board. Check it out at Sheldon Brown's page. Sheldon Brown's Cyclecomputer Calibration Chart
