Quote Originally Posted by m_c View Post
The main reason I ended up with my design, was it was the best way I could find to fit everything into the available space, plus I was aiming for a pretty large ratio, so pulley size wasn't really an issue. Everything was made from hot rolled steel, due to it having to carry the full weight of the knee.
I see, so out of the designs I've posted so far which do you think is the best option? Space is no problem at all for me.

I'm just redrawing the latest one to use a 40mm bore angular contact bearing since that means I can bolt a sort of collar on to the end of the shaft so that I don't need to do any thread cutting.