Reply To: Need a picture of a 1922 ELTO rudder twin Carb

[HARRY D. NICHOLSON]

The earliest ruddertwin carb from 1921 F models is different than the 1922 “no-letter” carb.
The 1921 F carb has a different handle in that it is half as long as later carbs and is shaped differently and it is pinned to the air lift needle instead of squeezed via a slot & screw.
ONLY these 2 carbs have the air intake opening low down on the starboard side below the mounting bolt.
Externally, both carbs look identical except that the large hex on top of the 1922 “no-letter” carb is recessed in the center area below the handle for a spring & flat washer which give the handle some friction holding ability. The 1921 F hex is flat & smooth on top but for the air lift needles’ small hole in the center below the handle.
Internally, these 2 carbs are different. The 1921 F carb has a very steep angle to the valve and its seat in the body, (which proved to cause problems). The 1922 “no-letter” carb has the common shallow angle valve & seat.
So to sum this all up, externally, a 1922 “no-letter” carb has the air intake low down on the side below the mounting bolt and the hex on top should have a recessed area with a spring & flat washer below a long handle on top.
If I knew how to post pictures, I would.