>>> What if I used one KR hinge to carry the weight at the bottom of >>> the rudder,and two REB's, 1 centre, and 1 at the top of the rudder
Hey Phil - No reason not to use 3 rod ends as planned? The way Murray worked it out, the rudder could weigh anything up to 16lbs (I don't recall exactly). I doubt that your rudder will weigh half that, finished and painted - my estimate would be closer to 3kg with paint, hinges et al. Assuming you add another 2kg (excessive) somewhere as counterweight and come out at 5kg (11 lbs) - man you are still good for something like 13G's assuming that only one hinge is doing all the work. Do a neat hinge installation and all three will carry. However - do you have a choice here? On my plans (ancient) there are two hinges and the bottom rudder hinge doubles with the control horn. Maybe a RE on the VS post positioned to locate within the gap of the rudder horn /hinge (and some spacers or shims). Steve J