[Seat Ninja]

We used the Mcmaster-carr hollow 1/4" belting that was mentioned before. It worked well for us and none of the barbs pulled out. I think it was worth it to use the hollow belting because you can run the belts while the rollers are mounted on the robot. With the welded ones, you have to remove all the rollers if one belt snaps for what ever reason. Also, I saw other teams who had solid cord on their 'bots and unless the team used a welding kit or similar, the welds would be blackish/discolored and the heat would deform the belts slightly causing them to bump around and not be as aestetically pleasing. Pretty much the hollow cords look cleaner when done quickly and are easier to adjust. My $.02