In the absence of waterproof glues, Saunders sewed sheets together with copper wire, a method known by the trade name Consuta.
These were unswept, carried no stagger and had parallel chord apart from the tips; notable was the large interplane gap and the large (6 ft 4 in, 1.93 m) overhang of the upper wing, wire braced from upward extensions of the interplane struts.
This carried a conventional tail, with an unbraced tailplane and fin bearing unbalanced control surfaces.
[2] The T.1 was originally intended to be powered by a 200 hp (150 kW) Hispano-Suiza engine, but all of these were prioritised for S.E.5as and instead a water-cooled 150 hp (112 kW) Sunbeam Nubian was installed, with a radiator immediately behind the four-bladed propeller.
Initially the single exhaust pipe went up from the nose at an angle of about 30° to the vertical, though this was replaced by a more conventional arrangement later.