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SR-1 Snoshoo fans
We are announcing the debut of the SR-1.1. It is something we've been thinking about for a number of years, and is an evolution of the original, with a new wing design and a complete fuselage shell, while retaining the same fuselage structure and tail group, with a couple minor mods to accommodate the new wing.

The original SR-1 Stockbarger wing was designed to fit the Shoestring fuselage attach points and around Ray Cote, who was maybe 5'6" tall. The wing was designed with a rear spar carry through, which limits pilot height to about 5'8". The airfoil section is thin (8% at the root, 6% at the tip), which makes for a fast wing on the straights, but not optimal in the corners.

The new evolution of the aircraft incorporates a number of design goals.

The Wing

1) Remove the rear spar carry through to accommodate taller pilots.
2) Change the wing attach points such that a wing can fit on a Cassutt also. This includes changing the aileron system to be similar to a Cassutt with torque tubes actuating the ailerons.
3) Change the airfoil section to a thicker, 14%, NLF (natural laminar flow) airfoil, This was done for several reasons.
a. Reduce stall speed, which is more important for sport flying than racing.
b. Optimize the "drag bucket" for the race course, so that you may have laminar flow present in both the straights and the corners.

The new wing still uses conventional wood construction, with a spruce spar and plywood skin. There are 3 new SR-1.1 wings going together now. None have flown, so we don't have definitive data on the performance numbers.

The Fuselage Shell

1) Accommodate taller pilots
2) Redesign the engine cowl for an 8" prop extension
3) Redesign the cheeks to end at the leading edge of the wing
4) Have smooth continuous curves from the nose to the tail, eliminating the fabric covering from the cockpit aft.

We've included a traditional 3-View of the new aircraft, but have also included a 3-D rendering of the aircraft to play with and inspect. You can download the .pdf and needs to be opened with Adobe Reader to make it work.