ORIGINAL: RFJ
As Joe puts it in the UFO article - ''to equalise the response of the aircraft to elevator inputs''. This type of mechanical differential set up was quite common in reed days to equalise the diameter of inside and outside loops and as shown will give more down than up. A bit redundant now with proportional control and the ability to adjust everything using transmitter software.
Ray
Agreed. Back before computer radios, this form of mechanical influence was about it as far as our choices went. Me, I always thought that it worked backwards from the desired direction - but I don't argue with Joe Bridi - nosiree.
Ed Cregger