I need to reprogram a sigma 906 bike computer for 26 inch wheeled bike

You should be able to use it on your indoor trainer. The Sigma will need a wheel diameter callbration to give correct readings.

Hi Enrique Aparicio...
Got to the following website and download your manual
Bud

https://docs.google.com/viewer?a=v&q=cache:PLuFdndb0jcJ:www.sigmasport.com/us/allgemein/showdatei/?download%3D1%26name%3D3_1_Manual_BC906_USA.pdf+Sigma+Bc+906+Computer+user+manual&hl=en&gl=ca&pid=bl&srcid=ADGEESjmWFy82205e8C7AUiLD8618PQdH7XiGoaPs7YDAhhfeG3hQorHFs9KtltB03XNQCqV5WSPaAO34MaLHc-wJkIms2qtdE-xgWfzDWT5gnwuRFlrKWPePpzuze_mnsV2GWoT0cqU&sig=AHIEtbQx1n_behQSle5XjQgQuTfiyesg2A

If you care about accuracy find the manual, go to page 14/28 and do the roll-out (B) option.

http://www.sigmasport.com/en/service_center/produkt_support/bikecomputer/

the manual explains it...
http://www.sigmasport.com/en/service_center/produkt_support/bikecomputer/

If you want accuracy you should do a real roll-out measurement.

Seek it here

http://www.sigmasport.com/en/service_center/produkt_support/bikecomputer/

The manual can be found on Sigma Sports Website.

The manual can be found on Sigma Sports Website.

get a tape measure and measure the out side circunfrance of the wheel. This is you number. OR put a white dob of paint on the tyre and roll it in a strainght line until the dob of paint makes a 2nd mark, (on a path way etc) measure the distance. this will be the same as the first option. Generally its required in mm.

you can measure your wheel by placing your bike on a flat surface with the valve stem on the wheel in the bottom most position or 6 o clock position. mark the floor where the valve stem is. now roll the bike forward so that the wheels gets one full revolution and the valve stem comes back to the 6 o clock position and mark the floor at the valve stem. now get a tape measure and measure the distance between your two marks. Convert this measurement to usually centimeters. that will be the number that put into your computer.

Rick

Bicycle Parts and Accessories

you can measure your wheel by placing your bike on a flat surface with the valve stem on the wheel in the bottom most position or 6 o clock position. mark the floor where the valve stem is. now roll the bike forward so that the wheels gets one full revolution and the valve stem comes back to the 6 o clock position and mark the floor at the valve stem. now get a tape measure and measure the distance between your two marks. Convert this measurement to usually centimeters. that will be the number that put into your computer.

the manual can be downloaded here

Rick

Bicycle Parts and Accessories