June 8, 2017 – I continued to work with the canopy latch today.
I sanded a little more material off the tube that is part of the canopy frame, thereby raising the latch arm into position. I also decided to place two AN-960 washers between the D-ring handle and the arm. This gives me a good vertical position.
Then I had to figure out where to cut the arm so it fits around the pin. Here’s the hook end of the arm before cutting:
With the canopy closed, I pressed the arm up into the pin to make a mark on the end of the arm. I thought I had a picture of it, but I guess not. Anyway, the mark was about halfway in that material on the hook end. I guessed at the dimension where I would cut, thinking I can always order another latch arm and try again. I removed about 1/4″ from the inside of the hook material, along with a new 1/4″ radius where the pin would rest when it’s latched. The plans advise removing excess material, but they show the trim area on the end of the arm, not the inside of the hook where I removed it.
Here’s the trimmed arm:
I put it together, and guess what!!! It was really a very nice fit! It went around the pin and pulled the canopy closed nicely without any excessive force.
I drilled two #53 holes for the assist spring, and then assembled everything.
It’s a little clunky because I don’t have the outside handle on yet, so I have to hold everything up in place.
Here’s a video of how it works:
And a photo of the latch in place.