This week's task is to construct the canopy latch. I'm using an aftermarket latch from JD Air that replaces the Van's latch handle with a flush mounted one. How much this modification will increase my top speed is debatable, but I'm quite certain that it will be more effective than painting flames on the cowl or using a slanted font on my N number. I didn't think to take any photos of the latch mechanism itself, but here is Carol at work on the latch mounts which are the first step.
It seems that our dress code needs revising.
While Carol works on the mounts I am cutting a big slot into the fuselage side. Here is the slot after the rough cut. At this point I'm wondering if I can save the airplane. I know that it will look better after I file it smooth.
The mounting angles and latch are riveted in place.
Then I discover that the handle can push inward slightly which is undesirable, and I think, preventable. I cut a stop out of .032" aluminum sheet and riveted it in place at the end of the handle. Compare to the photo above without the stop. The tang is bent to stop the handle when it is flush with fuselage skin.
Next, the linkage is assembled. Here is the overly complex mechanism. The idea is that the canopy handle pushes back on the bell crank like arrangement that because of mechanical leverage increases the force applied to the canopy hold downs (top of picture).
Here is the inside all together.
And now a view of the handle from the outside. The button on the left presses in to release the handle which pops outward. As the handle rotates outward the connecting rod moves rearward to release the canopy.
This photo didn't expose properly. Good thing I'm not paying for developing or flash cubes.
So now I guess I should begin work on the canopy.
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