General Cycling Discussion - Schwinn Bike Computer numbers for wheel size

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PDA
rykoala
06-01-04, 02:24 PM
I just got one of these, and I KNOW I'll lose the manual so I took 2 minutes and typed it out. When you turn on a schwinn bike computer it asks for a wheel number. Here is the chart.

Schwinn Bike Computer Wheel Size numbers
Wheel Diameter Number
20" 1596
22" 1759
24" 1916
26" (650A) 2073
26.5" (Tubular) 2117
26.6" (700x25C) 2124
26.8" (700x28C) 2136
27" (700x32C) 2155
28" (700B) 2237

w/ tire
ATB 24X1.75 1888
ATB 26x1.4 1995
ATB 26x1.5 2030
ATB 26x1.75 2045
ATB 23x2 (650B) 2099
27x1 2136
27x1 1/4 2155

Hope this helps someone other than myself!

Take care,

NeoBinary
03-11-05, 09:03 PM
I just had to say this was super duper helpful. It just so happens that I did lose my manual.

Thanks!
operator
03-11-05, 10:03 PM
Pfft don't need any manual.

http://sheldonbrown.com/cyclecomputer_calibration.html

And there's a way method of deriving the number which all bike comps use... which is also on that page.

capsicum
03-12-05, 08:33 AM
and thats tire circumference in mm, not wheel diameter.
louisizhere
11-09-08, 10:48 PM
That little piece of paper, is so important. I knew it was important, so I saved it till my little one used it,
to make a picture. I do thank you for letting us all have a copy. As the tin man said" only if I had a brain." Well since you did, We are all coverd. thanks
Bill Kapaun
11-10-08, 02:05 AM
The numbers also match the cheapo Bell computer.
T3hk1w1
11-14-08, 08:23 AM
Yes they do, I got the Bell computer a while back and it works very well for a $15 unit. I checked it for accuracy on a treadmill ^_^ and it was .2 MPH slow at 10 MPH, which I thought was pretty good for that price.
Bill Kapaun
11-14-08, 02:40 PM
Yes they do, I got the Bell computer a while back and it works very well for a $15 unit. I checked it for accuracy on a treadmill ^_^ and it was .2 MPH slow at 10 MPH, which I thought was pretty good for that price.

Recalibrate.
Use your current setting x 1.02. Or let some air out of your tire:)

Keep in mind that most any digital display is +/- one digit.

BTW, my 26x1.50" tires actually measure 1.6" as determined by the "wrap a string around the tire and measure the string" method.
Big_e
11-15-08, 08:04 PM
I still have my chart but my beady little eyes have a hard time seeing the small print so thanks!
Ernest