The climate spectrum test... You can tell a lot about the characteristics of your grips by throwing them in the oven. We put them in for 1 hour at 180 degrees. Semi-soft urethane that bends and breaks easily like this tends to conform well to contoured concrete walls, but it compresses and blows out easily, spins more easily, and will crack or tear much faster than semi-rigid urethane. This urethane completely failed the test and will not be used for production. Rigid urethane which will not really bend at all outperforms semisoft on flat walls by a mile. This is only a general test, but we dont call it semi-rigid unless it can pass this test. Semi Rigid Urethane (SRU) will be a little bendy especially around thinner edges, but it will still be much more stiff than SSU. You may be able to break your semi-rigid holds with this test but its going to take both hands and a lot more effort than you see in this vid. Semi-Rigid urethane will slightly conform to contoured concrete walls without breaking or being prone to spinning. With most polyurethane the softer it is when hot, the more brittle it is when cold. The softer stiff is also more likely to spin. If your climbing wall is flat Rigid Urethane will last longer and is least likely to spin. If your climbing wall is in a really cold or really hot place Rigid Urethane is your best bet since it is stable in the widest range of temperatures. (Some rigid stuff out there is made with polyester resin, so please remember this test will only give you a general idea. If it doesnt bend, that does not mean it is rigid urethane)
Posted on: Mon, 01 Dec 2014 02:34:04 +0000
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