Technical Specification

1937/1938 Single Step Hydroplane

Designer: Fred Cooper M.Inst.N.A.
Consultant Engineer: Reid Railton
Builders: Saunders Roe Ltd. (I.O.W)


Dimensions and Technical Specifications

Length overall: 23' 0" (7.01 m)
Length at waterline 22' 3" (6.78 m)
Width 9' 6" (2.89 m)
Draught: 1' 9" (0.53 m)
Displacement: 4,945 lbs. (2243 kg.)
Propeller diameter: 12" (30.5 cm) to 14" (35.6 cm)
Propeller pitch: 20" (50.8 cm) to 27" (68.6 cm)
Propeller speed 9,500 rpm.
Gear ratio: 3:1 increase on engine revs.
Engine: Rolls Royce R Type Vee 12
Starter Compressed air type


Construction

Main Structure: Two Rock Elm and Alloy runners
Frame: One piece 7 ply timber
Bottom: 5 ply timber
Deck: 6 ply timber
Top deck: Aircraft canvas and dope
Fittings: Alcan and Duralmin


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