The most significant was the Fairey Patent Camber Gear, which was a form of trailing edge flap used to increase lift.
On the Fairey-built aircraft, the entire trailing edge of each wing was hinged along the rear spar, lowered by rotating a handwheel in the cockpit.
A differential device ensured that the flaps could still be actuated as ailerons; thus, lateral control was maintained.
Production Hamble Babies differed in appearance from those built by Sopwith and Blackburn.
The planform of wings and tailplane were changed: the wings had increased span and reduced chord, had rounded tips, and the tailplane had a characteristic shape different from the semi-circular outline of the Sopwith original.