Originally Posted by
Rodney
Pull-pull is by far the best way to go for precise control. Installation can be a problem though. The main thing is to be sure to NEVER have any negative Ackerman. If you do not know what Ackerman is, there are several discussions of it in the forums. A bit of positive Ackerman is okay, in fact IMHO somewhat desirable as it is far easier on the servos. With positive Ackerman or neutral Ackerman, you just tighten the cables tight enough to have no slop or sag at neutral. If you get a bit of slack in the non pulled line as you move off neutral, you have a bit of positive Ackerman but that will not detract from the ability for precise control and has absolutely no negative effect. I set up all my 1/4 scale and many of the smaller ones with pull-pull on both elevator and rudder as it is so reliable and easy to do once you give it a try.
That statement is completely incorrect, take a look at IMAC competition today, most all that have been competing for over a couple of decades have gone through the pull, pull era and reverted back to servos in the tail as close to the control horns as possible, why? Precision thats why, even the high end kit manufacturers like Carden, Dalton and a few others design around this concept. At least for me a good reason for going Pull, Pull is a tail heavy condition as I have already stated, but if I were to come out tail heavy then you can bet I would go with the SWB pull, pull setup because it is a properly engineered setup to keep the lines tight and the strain off the servo's, not because of the cool factor LOL... By the way SWB also sells a gray coated cable guaranteed not to stretch, it was the only cable I ever found that did not stretch when I was flying my 141" wingspan Yaks. just saying...
Bob