ORIGINAL: bubba153
You've received some good info here. The simplest setup will be to purchase one of the pull-pull systems that have all the hardware included. You will also need to obtain a dual rudder horn (not included with some of the pull-pull systems),
and depending on your particular use, you may need longer servo arms. A previous poster included
http://www.swbmfg.com/pages/Pull%252...planation.html and you should examine this closely.
Proper geometry prevents one cable from loosening as the control surface is moved (and could potentially be problematic). For a bit more in-depth explanation of the geometry issues, you can look at this short article about the so-called Ackerman effect here
http://www.qmfc.org/school/ackerman.htm .
Bob
Bob,
These are the reasons why I like using the wheel on smaller planes, you don't have to worry about mismatched arcs fighting each other. If you use the wheel and put the rudder horns with zero offset to the hinge line, there is no slacking, or binding. Since you don't usually need or want a big wheel/servo horns, nor do you have the room in a 40-60 size plane, it's a great easy set up option
Set up in my Kingfisher for example, since there is no access to the rudder horns, tension adjustment is made mid-cable via the nyrod coupler,
It ain't the prettiest set up, but it's worked well for 15 years
