Since I'm deviating from the Piper Super Cub rib construction (just can't be made by a homebuilder), I wanted to verify that my rib would be at least as strong as the Piper rib. Here is a basic load test with 200 lbs of weight hanging from the rib. In order to keep the rib vertical, we clamped a couple of pieces of wood next to the capstrips because without the fabric covering to keep it veritcal, the rib would have leaned over an failed. We used a jack to allow us to slowly apply the load to the rib. This should equate to a 2,000 pound gross weight aircraft. More test to follow.
My rib is significantly heavier than Piper's (all kit ribs are because Piper was really smart about how they designed and built their rib).
Overall I'm happy with the results and now may look at reducing the weight by using some light weight aluminum and testing again.