I am not trying to beat a dead horse. But some things need to be clarified here regardless of what has been said on this thread and other comments about the Sheeks' swept wing stunter.
As with any stunter, the position of the bellcrank can be anywhere. However, there is good reason to place the bellcrank somewhere near the CG. There may be some structural limitations that do not permit the location to be right on the CG, but whatever the design, it is still desirable to place the bellcrank near the CG.
Given the leadout position relative to the CG, it is desirable to have the bellcrank near that CG to reduce to some practical limit the angle the leadouts must take at the exit point of the leadout guides.
So, where does the CG belong on a swept wing model? There are already some recent posts that show how to determine the mean aerodynamic chord (MAC) of a wing and its location relative to the root of the wing. A beginning point for the CG of the model would be probably between 22% to 25% of that MAC. That will place the CG well behind the LE of the wing at the root, depending on the amount of sweep back.
Then, there are other programs available, some referenced in other threads as well as the calculations/nomographs by Bill Netzeband years ago that show where to place the leadouts relative to that CG. (The suggestion that the leadouts should be 90o to the fuselage for the swept back wing only works if the bellcrank is already in a position maybe slightly behind the correct CG.)
Figures published years ago, supported by Bill Netzeband's nomographs and many computer programs later from these forums show (most derived from the work of Bill Netzeband and Peter Soule) that for a .35 size stunt ship, weighing in the neighborhood of 40 to 45 oz, on 60', 0.015" dia lines, a good starting place to locate the leadouts will be about 2o aft of the 90o position from the CTG published at the same time as those nomographs is to locate the leadouts behind the CG on that .35 size model about 0.36" for every 10" span of the inboard wing. Different models with different weights and different lines will all change that initial line rake position.
These calculations for MAC, the determination of the CG and the calculations for the line rake relative to that CG all work to determine a good starting point to locate the leadouts. It is not different for a tapered swept back wing.
Keith