Editing Synchronization gear (section)

==== Other German synchronizers ====
[[File:LVG E I right.png|thumb|[[LVG E.I]], with Schneider ring and forward-firing synchronized gun, presumably with a Schneider-designed gear, about which nothing is now known]]

===== The 1915 Schneider gear =====
In June 1915 a two-seater monoplane designed by Schneider for the LVG Company was sent to the front for evaluation. Its observer was armed with the new Schneider gun ring that was becoming standard on all German two-seaters: the pilot was apparently armed with a fixed synchronized machine gun.<ref name=Cheesman2>Cheesman 1960, p. 177.</ref> The aircraft crashed on its way to the front and nothing more was heard of it, or its synchronization gear, although it was presumably based on Schneider's own patent.<ref name=Woodman8/>

===== The Albatros gears =====
The new Albatros fighters of late 1916 were fitted with twin guns synchronized with the ''Albatros-Hedtke Steuerung'' gear, which was designed by Albatros ''Werkmeister'' Hedtke.<ref name=Volker6p33>Volker 1992, pt. 6, p. 33.</ref> The system was specifically intended to overcome the problems that had arisen in applying the Fokker ''Stangensteuerung'' gear to in-line engines and twin gun installations, and was a variation of the rigid push-rod system, driven from the rear of the crankshaft of the [[Mercedes D.III]] engine.

The [[Albatros D.V]] used a new gear, designed by ''Werkmeister'' Semmler: (the ''Albatros-Semmler Steuerung''). It was basically an improved version of the Hedtke gear.<ref name=Volker6p33/>

An official order, signed on 24 July 1917 standardised the superior Fokker ''Zentralsteuerung'' system for all German aircraft, presumably including Albatroses.<ref name=Hegener3>Hegener 1961, p. 33.</ref><ref name=Volker6p34>Volker 1992, pt. 6, p. 34.</ref>

===== Electrical gears =====
Post First World War German fighters were fitted with electrical synchronizers.  In such a gear, a contact or set of contacts, either on the propeller shaft itself, or some other part of the drive train revolving at the same number of revolutions per minute, generates a series of electrical pulses, which are transmitted to a solenoid driven trigger motor at the gun.<ref name=Williams1.35/> Experiments with these were underway before the end of the war, and again the LVG company seems to have been involved: a British intelligence report from 25 June 1918 mentions an LVG two-seater fitted with such a gear that was brought down in the British lines.<ref name=Woodman7/> It is known that LVG built 40 C.IV two-seaters fitted with a Siemens electrical synchronizing system.

In addition, the Aviatik company received instructions to install 50 of their own electrical synchronization system on to DFW C.Vs (Av).