RE: Robart Hinges: opinions
 

If you saw Robart hinge points shear off, then they weren't Robarts. Don't be confused by the GP version or the cheap Chinese knock offs. With Robarts properly glued in, you would destroy any control surface before the Robarts would shear.

RE: Robart Hinges: opinions
 

I have never seen a Robart brand hinge sheared off either. Of course the main idea is not to crash your plane. If it is crashed, what difference does it make if the hinges are sheared off? Are you going to re-use them? Personally, I would not re-use any part of an airplane that had been exposed to the extreme loads encountered in a crash (exception being powerpland and radio gear)(I would even send the radio gear back to be checked out prior to using again). The cost of replacing these parts in minimal compared to losing a plane due to an overstressed part failing with subsequent re-use.

Bill, AMA 4720

RE: Robart Hinges: opinions
 

Well gee guys. I know what i've seen, and the package they came out of said Robart on it. Ease of installation does not necessarily make it a good hinge. I figure it this way, one hinge point, with one shear point, versus one hinge with several shear points. It's a no brainer to me. When all that happens in a crash is a slightly cracked upper D tube sheet and one slightly cracked rib, and 6 3/16" robarts on each aileron shear off, that pretty much convinced me once and for all. Properly installed, no hinge will pull out, so to me that's a non issue as far as the strength of the hinge. Give me a set of pinned in Dubro's anytime.