RE: Set-up Tamjets Fail-Safe...
That cam setup idea I originally got from Tom Dodgen and Barry West.....once you get the dimensions right ( I used up 3 or 4 of the round arms which I seldom use elsewhere) and get the hole placement right, it is perfect. I had the room on the BCARF for a small extra air tank, so the doors are isolated from the gear air supply, although it is simple to hook it all up to the gear tank. That is the way I have it on the KC and BARF. I have Tam's FS Unit on the BARF as well. Once I figured out how to get the setup to work right on 2.4 with no jiggling of the gear servo or folding of the gear when I turn RX on, it was [sm=thumbup.gif][sm=thumbup.gif].
Paul Hopkins used to set up his gear with a button valve between separate air and door tanks. He controlled it with just his gear servo by putting in a mix with Aux 4 or 5 that slightly moved the output arm over center, contacting the button. That way, if he lost air in his gear tank, he could transfer air over from his door tank, just enough to at least get the gear down and locked, but Tam's FS has made that system obsolete.