Rotator Geometry

[JLCUB]

I built a rotator using ideas from this site and supercub.org. I have a 6' hoop and I have it rigged so that the wing chord is in the centre of the hoop. On the butt end the rotational axis is entered between the spars. With this configuration the wing doesn't track the same at the butt end as it does at the hoop and I believe I need an offset towards the aft spar that will lower the leading edge and raise the trailing edge.

The first picture is my hoop and the second one came from Steve Pierce on supecurb.org.

Any ideas?

 

[cubdriver2]

 

[JLCUB]

 

[cubdriver2]

 

[bob turner]