NOTE: These experimental drawings are for experienced builders.
7/8ths scale construction drawings for the Sopwith Baby and Tabloid and several pages of Narrative from Graham on his construction technique. NOTE Graham did not build a prototype of this aircraft, and had offered these drawings with unlimited online advice to builders who wanted to employ his construction techique.
I can answer questions on best effort basis.
Sopwith Twins: Baby/Tabloid
Grahams original comments:
This a 2 plane set of plans. You can combine the desirable aspects of both. The Tabloid was produced first as a Bennet racer, and did very well. It was then adopted by the military. With all of the accessories added, it needed a bigger engine, a change of cowl, and rudder to become the Sopwith Baby. Both aircraft were 2 place side by side, but in 7/8 scale they are perfect for the average 200 pound pilot of today. The Sopwith’s construction techniques are similar to the Nieuports.
Suggested engine choices: Hirth with 72 inch or larger prop. VW (with reduction ) [or Verner 5VL] (heavier engine up front is helpful for balance and to preserve overall appearance.
NOTE: The tabloid skids are necessary with the rearward placed wheels. The wheels can be positioned as on the baby without tip over skids
Wingspan: 21 ft 75 in
Wing Area: 195 sq. ft.
Length: 19 ft 5 in
Height: 7 ft 43 in
*Weight Empty: ~325 lbs
Fuel Capacity: 12 - 15 Gal US
*Stall Speed: 35 MPH
*Cruise: 75 MPH
*Top Speed: ~90 MPH
*Never Exceed (Vne): 110 MPH
Gross Weight: 650 lbs
G Force Factor: 5.7+ 2.8-
* estimated parameters.