Flak Z.F. 20E 5 fach

[pzo]

My latest optical score. Ground target aiming sight for deadly "acht-koma-acht".

[pzo]

Flak Z.F. 20E

More.

[pzo]

Flak Z.F. 20E

Detail.

[pzo]

Flak Z.F. 20E

My mistake. It is 6 fach.

[mlespaul]

p -
when you operate the dials or knobs is there any other movement that occurs on the unit or within the view? Thanks. I have some documents in it but not clear yet on the controls.

[pzo]

Flak Z.F. 20E

I have two examples of this optical sight. One is early, green painted, and has one more turning knob. You can spot it on top. In late war example they gave up to mount it. Vertical dial makes whole body to move up and down, as well as this top knob. Horizontal dial moves only internal parts from left to right. Part with eye piece goes up and down. I hope this helps. Please put some more info on this if You can. Thanks in advance.

[pzo]

Flak Z.F. 20E

Picture.

[mlespaul]

Thanks, pzo,

I thought the 20E was the one with the extra knob, and the 20 was without, but I could be wrong.

Okay, so you know the large end mounts to the "tear-drop" shaped stalk that extends from the right side of the carraige and in front of the gunner seat. I think it's a pin attachment that connects and disconnect it. the sight itself was held in a metal box at the front of the carriage when not in use.

So, the entire sight will move (actually, it causes a rotational action) so when you move the elevation knob up or down, the left side of the joint (the large cone-shaped part to the left of the eyepiece assembly) rotates in a clock-wise or counter-clockwise direction. This rotating joint is connected not only to the teardrop shaped fitting, but also to a cam arm. This cam arm is very important because it serves to transmit the action back along the arm behind the gunner to a rocker-shaped scale that is connect to the rear of the gun carriage back where the rounds are loaded. This rocker has elevation markings along the bottom of it as well. As the rocker is rotating in conjunction with the cam arm control originating from from the sight, the barrel of the gun is elevating and the elevation is being expressed by the rocker measurements. Take a look at a photo of an 88 and you;ll see the rocker elevation assembly.

The whole motion is controlled by the sight through the cam arm back to the rocker elevation assembly. The gunner does not have to move his head at all, because his portion is remaining level with his eyes while the rotation is all occuring in the fitting to the left of the sight.

All the guner had to do was raise or lower the /\ he saw in the sight using the adjustment knobs and then roll the elevation wheel by hand until the markings on the rocker were in collimation with the settings on the sight. Once that was calibrated for distance, he simply had to operate elevation by handwheel. and the /\ and the actual elevation were in complete sync.