Bell f20

Wheel values as follows:
Road Bike:
20" 1596
22" 1759
24" 1916
26" 2073
27"/700c 2124

Mountain Bike
24" 1888
26" 2045
27" 2155
28" 2237

here are the wheel value for a Bell F20

Road Bike
20" 1596
22 1759
24 1916
26 2073
27 2124

Montain Bike
24" 1888
26 2045
27 2155
28 2237

I hope this helps set your F20 computer.

go to this web site http://fitness.owneriq.net/mdownloads/fb94ddcf-c98f-4ba0-b115-290af84fa816.pdf

there ia pdf file of the complete manual on this site. in the center of the page.http://sitivi.blogspot.com/2009/04/bell-f20-bike-computer.html

These instructions are close enough to figure it out.   First...tire size as per chart,  then age and weight??,  then maintenance minder mileage. hold down left button to set clock.
http://www.bellbikestuff.com/pdfs/111741WirelessManual.pdf

The F12-F20 series are pretty much the same. The wireless instructions work but the buttons are different. The wired models have a left/right button/rocker selector at the bottom and it may look like a one piece plastic button but it's not. Pressing both sides for a few seconds will reset the computer. The computer will show the default '2124' tire size, with the '4' blinking. Pressing the right button will change the number. Press the left button when finished and the number to the left will blink and you set that one and so forth. After the tire size/number is set, the KM will blink and you can change that to MPH with the right button and press the left button when finished and the clock setting will come up. You can choose 24 hr (military time) or 12 hour (no am/pm option) and the numbers/time will show the hours first then minutes.

http://www.sheldonbrown.com/cyclecomputer-calibration.html#ccc

This is the link for a computation table based on your bike tire size.
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I have set all my computer up easily but when it comes to age and weight, I am not sure if the weight is in ibs. Can anyone help me on this. I have a fat burned programme aswell but so far it has not registered any fat burnt yet, does anyone know why. Could it be to do with the age and weight function.

I would be grateful if someone is able to tell me how to set the weight - thanks so much

2124 is for a 26 inch bike

26" Road Bike 2073

26" Mountain Bike 2045