In the process of assembling the Seamonster's rudder section. The kit comes with a pull-pull cable set up. I have never used that system and while I can see that it has a better control of rudder play, all of my other planes and a seaplane have just the single push rod set up and work fine.

Can some one tell me why I should not use the single rod method on the monster?

Pull-pull cables are lighter. Using a pushrod would mean more nose weight. The pull-pull also gives better control, but it requires some maintenance. You will need to tighten the cables after the first flight and whenever they need it after that.

(The proper tension will make a low tone when you strum the cable with the servo centered.)

Jim

I have only one plane where pull pull was feasible.....it works fantastically... even if there is a bit of slack in the cables, they still don't allow any significant movement of the rudder.....

I also used pull-pull on my water rudders this past summer after years of fighting with linkages of every discription, (and adjusting the rudders before every flight !!) They gave more rudder throw in both directions, and did not need any adjustments...