I never claimed it would do a "good" pattern, it won't. I just want to demonstrate that it will do every maneuver in a recognizable form. I am never going to win at VSC no matter what I fly, so I plan to have fun.
Added power and long lines will ameliorate a lot of the wide maneuvering. I just want to demo one of my designs in the primo showplace for that era model. I have cut about an ounce out of the solid foam version bringing it in to the weight of the original folded foam wing version.
I plan to try 35' .008 lines, and hope to push it out to 40'. The hourglass is the killer in my experience, and I may not be able to do much more than a lumpy vertical 8. I also need to test to see if the wide venturi of the Killer Bee will pull fuel through maneuvers. Lots of testing to be done, and not much time left!
I added an adjustable tip guide and did a test assembly. I discovered that the extended tank runs into the landing gear mount!
So, I pulled the tank off the nose bottom, and modified the bottom mounting to allow the tank to move forward. This required removing the vent tube and some modifications there.
The tank is now attached to the upper fuselage and an aluminum tube replaces the plastic vent tube. The vent hole in the lower fuselage needed to be extended forward.
When the glue is all dry, I'll post photos of the setup when it is finalized.
If you are building the folded wing version, extend the spar several inches to keep the foam from collapsing. A 1/16" balsa extension will do just fine. The foam is the strength as long as it can't flex inward. Also, use a foam safe adhesive to glue the wings on in addition to the tape.
Looking at the folded foam wing version I have, the trailing edge bond is letting go. That needs to be repaired! Shucks that model was made 43 years ago. Gee, even Cox didn't make things that last.
If you look carefully at the earlier photos, you will see that I have a carbon reinforcement at the center and strapping tape top and bottom out to the tips. It is probably more rigid than the un-cored wing. Besides, the aft part of the wing doesn't bear much of the load if you leave the high point intact.
The Killer Bee with 5x3 prop on 30% nitro should have nearly twice the thrust as the product engine with a 6x3 as originally provided on standard 15% fuel. That ought to give me some edge!
When in doubt - Cheat!