![]() If a clamp is used to attach two ends of a synchronous belt, a minimum of 6 teeth in mesh on each side of the belt is recommended. If a clamp ever attempts to ride over a pulley, catastrophic results will surely follow. If this is done, the clamp must be contained on the belt span between the two pulleys. There are currently no processes to splice together a rubber synchronous belt.Ĭlamps are often used to attach two ends of a synchronous belt together. The spliced section is now the weak link of the belt, and like your co-ed softball team, you're only as strong as the weakest link. This is because once you cut the tensile cord you've eliminated the strongest part of the belt. After this splicing process you can expect about 40% of the initial strength of the belt. Splicing two ends of a synchronous belt can be done when the belt is made with a particular type of polyurethane construction and additional polyurethane is used as "glue" to attach the ends of the belt. ![]() To answer this question: yes it can be done, but not very easily. The question is often raised if it's possible to cut a synchronous (timing) belt into a custom length and splice the belt back together when a standard length does not fit the application. Should be good and should be roughly half strength of what the belts performance normally would be. Get belt out and hand stitch both the upper and the lower seams and then lightly coat the stitching with the flexible glue. Now take a small section of belt material and remove the teeth - grind the thickness of the carcass to about half depth saving the fiber part of the carcass the most, glue this directly to the back side of your spliced belts with a strong but flexible adhesive, (a thin layer of "goop" on both sides to be glued is what I would use) clamp in vise with terry cloth rags to provide uniform pressure even on the inside of the belts teeth area, let sit overnight, Now take your largest diameter cog and using as an alignment guide wrap both belt ends together and join with super glue, Take the other end and do the opposite at the same angle, Now cut the underside of one of the belts and shave off one tooth diagonal thickness wise (not width wise) If you need continuous direction and a closed loop belt I would try to go M&M's route but if that does not pan out here's how I would splice it,Ĭut a few teeth longer than what you need,
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