The fuselage was redesigned and a new tailplane was fitted, with staggered wings of unequal span.

While plans were prepared for more powerful versions fitted with revised wings, no production ensued.

All three were fitted with folding wings (which Shorts had developed and patented in the years 1913 -1915).

By January 1953, some cars were being fitted with fibreglass rear wings.

The new Mach 5 is also fitted with small aerodynamic wings, to assist Speed in longer and farther jumps.

It was planned for private and club use and, unlike the Cadet, was fitted with folding wings.

Morane rouleurs (preliminary training ground training aircraft, fitted with clipped wings)

Unbuilt project, intended to be an advanced version fitted with swept wings.

DH-4s were also widely used for experimental flying, being used as engine testbeds and fitted with new wings.

(Model 340-26) Fitted with folding wings and arrestor hook for carrier operations.