Body of email:
I found a brochure entitled "Self Tracking Belts" on Gates Mectrol web site and thought you might be interested. It's located at:
Gates Mectrol self tracking timing belts have all the capabilities of standard urethane timing belts but utilize guides to eliminate any lateral movement. Our range of specially designed urethane V-guides are notched along belt length to provide optimum flexibility around pulleys. Gates Mectrol produces V-guided belts in two constructions — fabricated, any of four V-guides can be added to any pitch belt in any width, length combination, or — integral, the V-guide is integrally molded to specific belt pitches for greater strength and consistency.