All i can say with confidence that my parts are as strong as remmele/mbt setup, if made from 7075 T6 alu
Housing design is similar, but thicker and has 20mm joint instead of 18mm joint. I also added side gussets to my design bracket, it made significantly stronger to resist bending.
Yes, its true that with this style parts, there is no more flex like with springplates.
Uniball joint itself in its housing can move sideways 4 degrees to both sides, but there is no joint slop at sideways inside housing.
Yeah, the threaded bar can indeed broke at any design, i have seen too. I think too that is caused by arm moving too much sideways caused by too much flexing inner bushing?