Hi mfr02, i undestand that if i use a pulley or ring the lenght of the sheet pulled by the servo arm will be doubled, but using only one pulley or ring does not double the force, as i remember from my science classes ( many years ago, so probably i am very wrong!!!)

if i use the pulley or ring and the force to the servo will be doubled, then using it is meaningless.

will be Ok if i use one sheet of line rig directly from the booms to the servo arm???

Thanks in advance.

Tatolazo