The armrests are pretty flimsy as designed. I’m using some 0.063″ angle to reinforce them. I used a router to radius the outside corner so that it can tuck into the angle on the armrest. I drilled them to the flange and will eventually also drill them to the top surface of the armrests.
I also fabricated four of these little supports that will rivet into the bulkheads at each end of the armrests to transfer the load directly into the bulkheads instead of through the wimpy flanges on the armrests.
Here’s how these will mount. Any load on the armrests will be transferred into the 0.063″ angle. The angles will sit directly on top of the supports to transfer the load into the bulkhead. Without these, that little flange just above the angle would have to carry the load.
