Not being very bright,

I'm completely lost as far as belt drive components,pitch,teeth,gear ...not to mention the required belt lenght for a particular set up..
I found this little app..at
http://www.sdp-si.com ..Its a component wholesaler/dealer..what ever its called ..lots of cool gear to make things go up and down and around..
particularly props... belt drives just don't seem that intimidating any more.
hope you find it useful :
http://www.sdp-si.com/Cd/default.htmA XML belt should suit most scale application's 6mm wide.
If you do decide to order..E-mail or call it in and get a total before swiping the stripe..there's been a few arguments of excessive shipping charges. They well work with a guy to save a few bucks.or pounds..stone..whatever your currency is .