I asked Dave Snow to elaborate on the Impact that he flew at the Nats. Here is an account that I received from him about the modifications that he did to the plane that he flew to a 1st place in Masters. Mike

"I see there are some questions on RCU about the Impact that I was flying at the NATS. Well here are some of the modifications that the plane has and the equipment used.

The fuse is stock with only one balsa stringer each side of the fuse from the wing trailing edge to stab leading edge. There is a bulkhead at the stab leading edge and the wing trailing edge. The two bulkheads that came with the kit for the landing gear and the landing gear plate where remade with liteply. The carbon gear was also replaced with the ESD carbon gear from Central Hobbies. Since the plane is an electric I did not use any of the bulkheads in front of the gear. The pipe tunnel composite foam plate was used as an air deflector to force the air out of the body just behind the wing tube, very similar to Jason’s setup from last year. The wing, stab and rudder are all foam/balsa parts cut by Mickey Losardo that are based on he Temptation’s airfoils. The stab is one piece and glued into the fuse at 0 degrees. We modified the wing plan form to an equal taper as Kirk Gray did with the Phenom, which I had several years ago that flew well in most wind conditions and I wanted to try the wing plan form again which this plane provided the opportunity. The wing/stab/rudder parts were replaced due to the kit parts being heavy and at least one wing panel having a big twist. The foam/balsa wing panels weigh 14.1 ounces each ready to bolt onto the plane where the kit wing panels out of the shipping box weighed about 15.5 ounces. The plane came out slightly overweight so at the NATS we removed the spinner and wheel pants. Removing the spinner had an additional benefit of more cooling air over the motor and batteries. At the NATS the planed weighed in at 10 pounds 13 ounces when using the Thunder Power 5300 batteries. An 11-year-old Futaba 9ZAP with synthesized receiver and JR 8231 servos on ailerons, elevator and rudder was used for control while the Hacker C50 14XL, APCE 22x12W with the Castle Creations Phoenix 110HV controller was used to power the plane.

I hope this answers some of the questions about the setup."
Dave Snow