I am putting together my first pattern plane that has pull-pull setups (rudder and elevators). There seems to be lots of discussion about getting the pivot over the hinge, wires too loose/tight, etc but I have not seen many people using a pull pull wheel like this one: http://www.hangar-9.com/Products/Def...ProdID=HAN3515 It would seem that this would be the ideal way to set up pull-pull - wires don't move laterally as the arm moves, you avoid the mechanical exponential, you only have one wire to adjust, etc. But I don't see many people using this setup. What are the pros and cons of using a pull-pull wheel?

Thanks,

Alan