Differences in PneuMags

[Zarak]

You might look at the threads on shims in the RT on/off and shorter on/off pins. I think either way will result in the top of the pin being lower in the on/off during recharge for better flow, as well as being open for a longer time during the cycle.

Spider-TW... you may be on the right path to solving this problem.

We noticed that when we de-gas the mag the RT on/off pin pushes itself up into the body of the valve, pretty much positioning the pin above the quad oring... Our idea is that the pin is pushed so far past the quad oring that the air takes longer to push the pin back out = longer recharge time = chuffing... so the length on the pin might be the culprit.

We've shorten the RT pin between 0.7305" to 0.7300" (measured with a calibrated Mitutoyo Absolute Digimatic Digital Caliper) and we added two Lvl 10 shim. This moves the seal on the on/off lower to about 0.04" which is equal to 8 ULT shims. We're hoping to see some improvements... if not then we're removing 0.001" from the pin and retest. All we need now is air to test. I'll keep you all posted.

Anyone else have any ideas?

[Spider-TW]

I was looking at an MSV-2 the other day and I can only remember seeing one exhaust hole. If you mount the MSV with the hole facing the frame support, it would have to screw you up some if you don't have a qev.