> He/they concluded that if a visco elastic cushion was not used, a drop > similar to that from a PIO bad landing could cause spinal damage while > if the cushion was used, the damage was less or none. >
Do you have the source? I was only able to find his work with a dummy at the RAF base. In that he did not show any improvement in clinical outcomes and even comments that he is unable to acertain a permissable performance range. There's enough evidence around that the stuff works In absorbing force, yes, in improving outcomes, I'm still waiting... and even if it does not, it works better than the simple foam used on most seat cushions. Only for 4 years, after which it begins to degrade in performance. Why not us it? Because for a few hundred dollars less I can achieve comparable results. If you are making a single cushion the price may be viable. When you start making a few it is simply too expensive. When I was looking to make club cushions for a k21, to match our current requirements as a minimum we were looking at $500 minimum for dynafoam. That doesnt include covering them for protection. If spending $100 on a cushion brings peace of mind I cannot fault you. But Im only going to spend the club's cash on something I can honestly say will do something, and I cannot.
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