A final hidden danger lay in the synchronization gear which did not seem to work properly, leading a few Israeli aircraft to shoot off their own propellers.

Two days later, his plane's machine gun synchronization gear failed and Janzen shot off his own propeller while attacking a Spad.

The MAC 34 could not be fitted with synchronization gear, and was more expensive to manufacture than comparable weapons, but it was compact and had excellent reliability.

The first British "tractor" to be specifically design to be fitted with synchronization gear was the Sopwith 1 Strutter which did not enter service until early 1916.

The delay is typically too brief to be noticed, but may be disruptive in processes where accurate timing is important, such as synchronization gear in propeller-driven aircraft.

In the absence of a synchronization gear to provide a forward firing machine gun for a tractor scout such as the S.E. 2, it was given a pusher layout.

The recently introduced Fokkers, with their synchronization gears which permitted a machine gun to fire through the arc of the propeller without striking its blades, outperformed the British aircraft.

Garros scored three victories in three weeks before he himself was downed on 18 April and his airplane, along with its synchronization gear and propeller was captured by the Germans.

The M16 version of the gun could be synchronized with greater accuracy, but a widened engine rpm restriction still had to be respected, except for aircraft equipped with Daimler synchronization gear.

The Germans acquired an early air superiority due to the invention of the synchronization gear in 1915, transforming air combat with the Fokker E.I, the first synchronized, forward firing fighter plane.

When it was realized that it was desirable to arm these scouts with a machine gun firing through the propeller, Fokker developed a synchronization gear similar to that patented by Franz Schneider.

The usefulness of synchronization gears naturally disappeared altogether when jet engines eliminated the propeller, at least in fighter aircraft; but gun synchronization, even in single piston engined aircraft, had already been in decline for the decade prior to this.

The term covers two related technologies: the first, more accurately referred to as synchronization gear, or a gun synchronizer, is attached to the armament of a tractor-type craft so that it can fire through the arc of a spinning propeller without the bullets striking the blades.

The Constantinesco synchronization gear (or "CC" gear) was first used operationally on the D.H.4s of No. 55 squadron R.F.C. from March 1917, during World War I, and rapidly became standard equipment, replacing a variety of mechanical gears.

Eventually all British aircraft were equipped with the superior Constantinesco synchronization gear (or "CC" gear, invented by Romanian engineer George Constantinesco) which used sonic impulses transmitted by a column of liquid instead of a mechanical system of linkages.

In December 1914, French aviator Roland Garros asked Saulnier to install his synchronization gear on Garros' Morane-Saulnier Type L. Unfortunately the gas-operated Hotchkiss machine gun he was provided had an erratic rate of fire and it was impossible to synchronize it with a spinning propeller.

The retention of fuselage mounted guns, with the additional weight of their synchronization gear (which slowed their rate of fire, albeit only slightly, and still occasionally failed, resulting in damage to propellers) became increasingly unattractive as the extra firepower offered by two machine guns came to represent a decreasing percentage of a fighter's total armament.