polycord and yellow belt

[tsaksa]

Originally Posted by S.P.A.M.er 17

Our robot used the hollow polycord, joined with a barb at first. The barbs would snap out over repeated use, and finally we decided to weld them together. They have not broken since, and we have already gone through a regional. I would definitely suggest welding them for anyone considering to put polycord on their robot.

Same here. The barbs were good for prototyping, but are no where near as strong as a welded connection. We made some special tools to help weld it and remove the flash.

The only problem we had was with the balls wanting to push the cord off a pulley under significant compression. We had to greatly reduce the compression to make it work, but I think our pulleys were also not as well machined as they might be. Some pulleys never came off and some always did. We will need to examine them when we get the time and improve our design.