The Traction is made of two beltdrive modules developed by Lynex.

The reason the drivewheel(blue) is in the top of the belt and not in the front or in the back is because in this position stones cannot wegde in between the drivewheel and the belt, and thereby cause the belt to rupture.

The gear ratio is $R=9,625$

This ratio is from the motor to the cog powering the drivewheel. The drivewheel has not been considered in the calculation

The chain on the belt module is industrial chain.

08B-1 - Stainlees steel

Mädler.de:105 990 00

Belt type:

google search:rubber tracks for crawler

http://www.claas-industrietechnik.com/de/produkte/antriebstechnik/raupenfahrwerke.html

http://www.westtrack.nl/

mclarenusa.com/next-gen/next-generation-rubber-tracks-for-mini-excavators.html

http://www.bridgestone-earthmover.com.au/rubber_tracks.htm