i am building a dozer in a couple of months and came across this site (http://www.rctankcombat.com/articles/track-systems) i am interested in the Roller Chain Track method to build the trcks out of. does anyone know wher i can get some of it

Guess that depends a lot on the scale you are using. Lots of difference in strength between 1;16 and 1;4 scale as well as speed and driving source. For smaller scales, why not check the tracks on some of the big Tonka cats. If it's a civilian dozer/Cat, it may save a lot of time & hassle.

thanks for the info i was building in 1:14 or 16 sacle not sure yet. didnt like the tonka track look.