[EricH]

Originally Posted by Basigiaz

I cannot find anything in the rules against it; in fact R81-D mentions use of the KoP vent plug.

If you're going to reference a rule, reference it RIGHT. R81 is the maximum stored pressure rule, no part D. R78-D requires the use of a Pressure Vent Plug as part of the pneumatic system; under R89, it must vent all pressure to atmosphere; under R78, it has to be hooked in as per the diagram (Figure 4-15).

The vent plug is also known as the "dump valve".

Also note that you're asking in the wrong place--try the official Q&A.


So let's see if I understand the setup of the cylinder-as-spring. One end of the cylinder is plugged--nothing in, nothing out. The other has a gauge and a release of some form (I would suspect a solenoid would be better....)

Now, per Q34 on Q&A, a quick release is illegal. You also have to be aware of the 60 psi working air limit (Q129/R82). A regulator might work, but I'd guess you'd be losing air quite a bit.

To be honest, I would have to see the setup to pass it or fail it, but I'd be leaning towards failing right now. If I might make a suggestion, try a closed-loop gas shock, or full pneumatics.