Sopwith Pup

Photo-courtesy of Balsa USA

Note: this kit is NOT suitable for beginners.

Specifications:

Wingspan: 108", Fuse length: 77", Wing cord: 21", Wing style: Undercambered, Wing area : 4,428 sq. in. (that's over 30 square feet!) Wing loading: approx. 16.7 oz/sq.ft., Estimated weight: 32 lbs, Functions: Rudder, elevator, ailerons, throttle. Basic construction: 1/8 in. ply, balsa, light ply, and fabric covering, Brushed aluminum cowl, Finish: dope and custom mixed flat exterior latex, stained cabane and wing struts, Servos: 5 ball bearing (throttle, dual aileron, pull-pull rudder and elevator), Functional flying and landing wires, Engine: G62, Gear: Custom built shock absorbing, fixed main, steerable tail wheel, Wheels: 9" wire spoked mains and 2" tail, Fuel tank: 50 oz. gas, Prop: one 22X8, Radio: JR PCM. Dummy radial engine and machine gun are kits by Mick Reeves Models-UK

The first group of photos (taken early in late October, 2003) show the result of about three months planning, and building.

The next group of photos was taken in late December 2003. The plane is about 90% complete.

The next group of photos were taken in February, 2004. Working on the details!

"The morning of June 30, 2004 and all systems are "go" for the Pup's maiden flight. Henry Bergen piloted the plane. Once off the ground, the plane went into a nose-up attitude. Even with full down trim and holding lots of down stick, Henry managed to bring the plane around the patch for a safe landing. There was some discussion about the wing incidence being off slightly may be the problem. Henry did some adjusting of the flying wires on the stabilizer and made a second attempt. This seemed to help somewhat, but still a handful for Henry. He made a couple of passes and landed. And what a landing! The Pup just floated in! There was more discussion about the plane being tail heavy. This will be addressed later, and hopefully we'll see the plane fly again."

Bob Taylor's 1/3 Scale Sopwith Pup