Support the Site:


Erco Tear Drop Turret

Illustrations and performance details of the Erco 250TH Tear Drop Turrets mounted in the PB4Y-2 Privateer from Aircrewman’s Gunnery Manual, Aviation Training Division, Office of the Chief of Naval Operations, U.S. Navy, 1944.

Erco Tear Drop Gun Turret - Erco 250th - U.S. Navy Consolidated PB4Y-2 Privateer

ERCO 250TH-1 AND 2

The Erco 250TH Turrets have the approximate shape of a tear drop. They are installed in the waist positions on either side of the PB4Y-2 airplane—the Erco 250TH-1 on the starboard side and the Erco 250TH-2 on the port side. With their wide cone of fire they protect the plane from beam or belly attacks, besides offering a considerable area of protection from above. In operation they are somewhat similar to a ball type turret inasmuch as the gunner moves with his guns and sight in the direction he moves his control handles.

Erco Teardrop Gun Turrets Navy Consolidated PB4Y-2 Privateer

Facts and Figures

POWER: The Erco Tear Drop operates hydraulically on pressure built up by a hydraulic pump driven by a constant speed electric motor.

SIGHT: Its sight is a standard Navy Mk 9 reflector sight fully described in the introduction to this section.

ELEVATION: Both turrets can raise their guns 55° above horizontal in elevation and depress them 95° below horizontal.

AZIMUTH: In azimuth, the Erco Tear Drop turret allows the guns a movement of 135°, 55° towards the bow from the beam and 80° towards the tail of the airplane from the beam.

ARMOR: The armor plate in the turret protects the gunner from fire in any direction he turns his guns. It consists of three groups: (1) 1 1/2″ thick bullet-proof glass in front of his face, (2) 5/16″ armor plate in front of his body, and (3) 5/16″ armor plate under his feet.

STOWING: The stowing position is 0° elevation with guns pointed in the extreme aft position in azimuth (80° aft of the beam).


Related posts:

4 comments to Erco Tear Drop Turret

  • Pat Flannery

    That was a interesting article; i always suspected they worked like that, but wasn’t sure.

  • Fatso

    [ Great articles & a nice site ]

  • john preston

    I was a combat aircewman (radioman/gunner)flying privateers out of iwo jima during WW2. I manned the fwd top deck martin turret. We almost sawed a small freighter in half in sagami bay with the waist ercos converging below the plane as we made a bombing run at low altitude. both bombs straddled but we left it sinking due to the waist turrets. ref. vpb-116 action report 69

  • 50cal

    I shed a tear in meemory of the teardrop turret. 🙂

    Seriously, thanks for posting. I love the shape of that gunners pod.