Two things:
EAA and FAA are way different in what they allow. If you got it at an airport supply house I would suspect it probably is under EAA rules which as I remember are way less strict than FAA. One of the engineers I worked for was building a home built airplane so I absorbed some of the EAA rules from him. Also in doing some research on things for here I again run into EAA URLs' and again, the differences are quite a bit more lax. In doing some research on this the Granger's and other supply houses did show the liners you posted but again, we had to use "Standards" that are probably quite a bit more expensive than even Granger's would have mainly because of the documentation that would have to come with each part. they could be the same part or something much superior but I would have no way of knowing so I would choose to error on the high side... not trying to be arrogant here. I look at this as being an emergency situation component so I would be tough on it just like I am sure you would be during and inspection for a race.
That being said, we on the road are not going to achieve the stresses that FAA could or would require designs' to handle (no pun intended!) and I still think in those lines; 34 years is a long time of thinking that way. Off-road, then we up the stakes a bit don't we.
The second: it what I almost posted before but thought I was being too picky. Those push buttons under certain loads or load conditions possibly could jam on you. For instance, in a panic situation you try to jerk/pull the pin before you press the button: the stops at the other end can get jammed in the liner or if no hardened liner in the softer material of the door frame and will not work and/nor will the button won't work to relieve the situation.
In the mid and later into in the 60's I spent some of my first few years of "apprentice time" working in the "emergency equipment" group which is where I got a lot of this. Up to that time what then were referred to as "pip-pins" (a brand name I think used generically as you can still query them on line) had been used up to that point but suddenly I was told "no more". I forget what was used after that but some of the explanations of why not's eventually came down from above but then I was transferred into another group for additional training there.
This is the kind of debate that I would see at my desk or in a design review meeting. Sometimes they got kind of loud too
. (an aside) The first design review I stood in on... was at my desk. We were working on Mylar but still using plastic lead as the use/acceptance of acid base ink was a couple of years way and stybillo pencils would not reproduce well as it caused the lines to reflect flares when going through an Ozlid (sp) machine. Anyway, I was told to get a rolled copy the first thing in the morning to be ready for the supervisors and lead engineer "to talk" on. I came in early to do that but they were already there and in the process of taking my desk cover off while each was grabbing a pencil or a colored pencil (a grease pencil) out of their pocket and starting to draw on the original. They got loud, 350 people n the room stopped working, phones were ignored and were ringing, I was trying to hide but was being held in place (the lead engineer was amused to say the least); it took me over two days of solid work to get the marks off the Mylar (the high speed solvent we had been using had been banned by then as it was being absorbed by the skin and would head up to the brain... hmmmm maybe that is why I am what I am
).
Anyway, great discussion guys.
Lee
Lee
