Assumptions

Assumptions

  1. The Crusader 2 model will be built as a composite hull by Len Newton. His existing model of Crusader 1 used construction techniques similar to those used for the full sized boat so the models will be ballasted to ensure power/weight ratio equivalence
  2. The same type of jet engine with the same thrust (30lbs) will be used for each model.
  3. The hull will be split longitudinally for access.
  4. The air intake will be the curved front section of the wooden model.
  5. The cockpit will initially be located in the nose as per Railton’s original design sketches.
  6. The rudder will be located just aft of the rear of the front step as with Crusader 1.
  7. The existing sponson mounts appear to be for the test model only in order to swap between different sponson designs. We will use the same style of single sponson mounts as per the Crusader 2 model and check the design for strength and stability as part of the CFD work.
  8. The jet pipe will be as low as possible consistent with Railton’s design principles.
  9. The full size engine would have most likely have been a Ghost as used in Crusader 1 although an axial flow jet (for example a Metrovick Beryl as used in Bluebird K7) had been proposed at some point, as had rockets.
  10. There is no known confirmed name for the boat since this was a subsequent Railton design and not intended as a tribute to Cobb as far as we know. We have therefore adopted the naming convention of Crusader 1 and Crusader 2 solely for this project for simplicity and clarity.
  11. There is no known colour or livery for the boat so we will use that of Crusader 1 to provide continuity.