Originally Posted by ldrhawke
With all three of the wheels fairly close to the same fore/aft center line, has any thought been given to use a chain linkage off of all three wheels to a single
shaft run under the floor back to aft section and then use a double right angle drive at the rear of the shaft off to each each rudder? Another right angle gear
box or a universal joint directly to the rudder shaft. It could be a fairly simple, very positive feed back, and less complicated system than a hydraulic system. Each will could have a separate mechanical engagement clutch
at the wheel
so it didn't turn when not in use and the turn down ratio could be made directly on the chain/ sprocket linkage at the wheels.
my initial idea was to do something like that using carbon tubes, I got a proposal from Jefa. It turned out to be very expensive, and did not adress the redundancy issue. 4 gearboxes , with the one connecting to the rudder/crossbar being critical. I guess caryying a spare of each type could be a solution.
Before looking at this, I wanted to go with Vectran, but everyone I asked said it was a bad idea with those long runs. I tried an Edson
wire system on a 47 footer, but it was really difficult to setup so that you got feedback without too much play at the wheel. My impression was that the friction was really loading up the autopilot
Anyone tried something like this before?