Well I have bit the Robart hinge bullet. I had a dead-stick on my Pitts yesterday as a result of the fuel tubing making contact with the muffler. Melted right through and then I discovered an air leak in the fuel valve as well. I guess the vibration with the fuel valve mounted in the cowling caused too much vibration and the seal failed. It was a new valve so I honestly doubt it was the results of debris in the valve, but could have been. Anyway, I am replacing with a fuel dot so that can't be an issue any longer. I know, you guys told me so.........
The DS landing was in the field and caught a clump of grass so the plane flipped over and broke the rudder off. It crumpled the rudder at the tip, but was easy to repair. No other damage thankfully. I decided to replace the Kletts flex points with Robarts simply because in drilling out the flex points the hole would have been too large to reinstall flexpoints. I drilled out the old hinges, recovered the rudder in the broken area and along the hinge lines for a clean finish. All ready to install. Going to use Gorilla glue after I finish my test on a spare rudder I had laying around. I want to make sure I know how much Gorilla glue to use since this stuff foams and expands on contact with water. This will be my first time using the stuff, but from all I have read this stuff is the ticket. If anyone has any final pointers before I use this glue please advise. I am going to wait a few hours to let the glue set up in the test.
In the picture below I show an example of the Robart hinge used and the flexpoint next to it.