Weslake made engines for RPVs, UAVs, and ultralight aircraft, in various power ratings and models.

-The Type 116 was a two-cylinder, two-stroke engine giving 7.5 HP.

-The Type 274 has undergone several developments, such as the -3, -4, and -6. Power outputs are around 18 HP.

“Weslake Type 274-3”

-The 430 is a 40 HP engine, similar to the previous one but more advanced.

-The Type 548 is the four-cylinder version of the 274, with 36 HP, just as the Type 860 is the four-cylinder version of the 430.

“Weslake Type 430”

-The Type 1527 is a four-cylinder, four-stroke engine giving 100 HP.

“Weslake W50-4”

-Weslake and Company engines were later manufactured by Emdair (see). The W50 seen installed on a UAV in the photograph was a joint development of both companies, based on the Emdair CF77/90 and 122.

-The W-50 is a four-stroke, air-cooled engine with a maximum power output of 50 HP at 4800 rpm and a cruising power of 48 HP at 4200 rpm. It has a displacement of 798 cc.

-It was later renamed the Weslake Aeromarine Engines, affiliated with NGL, or the Normalair Garrett, without any connection to Emdair.