Fokker's Synchronizer and other German gears thumb|upright|left|Fokker Synchronization gear set up for ground firing test. The wooden disc records the point on the disc of the propeller where each round passed. The diagram opposite shows the probable result for a properly working gear. Inherent inaccuracies in both the gear and the triggering of the gun itself, small faults in normal service ammunition, and even the differing RPM rates of the engine, all combine to produce a "spread" of hits, rather than every bullet striking the disc in precisely the same spot thumb|180px|Correctly functioning synchronisation gear: all rounds fired well within "safe" zone (well clear of propeller) Inspection of the propeller from Garros' machine prompted Idflieg to attempt to copy it. Initial trials indicated that the deflector wedges would not be sufficiently strong to cope with the standard steel-jacketed German ammunition, and representatives from Fokker and Pfalz, two companies already building Morane copies (although, strangely, not Schneider's LVG concern) were invited to Döberitz to inspect the mechanism and suggest ways that its action might be duplicated.Woodman 1989, p. 180.
Fokker's Synchronizer and other German gears thumb|upright|left|Fokker Synchronization gear set up for ground firing test. The wooden disc records the point on the disc of the propeller where each round passed. The diagram opposite shows the probable result for a properly working gear. Inherent inaccuracies in both the gear and the triggering of the gun itself, small faults in normal service ammunition, and even the differing RPM rates of the engine, all combine to produce a "spread" of hits, rather than every bullet striking the disc in precisely the same spot thumb|180px|Correctly functioning synchronisation gear: all rounds fired well within "safe" zone (well clear of propeller) Inspection of the propeller from Garros' machine prompted Idflieg to attempt to copy it. Initial trials indicated that the deflector wedges would not be sufficiently strong to cope with the standard steel-jacketed German ammunition, and representatives from Fokker and Pfalz, two companies already building Morane copies (although, strangely, not Schneider's LVG concern) were invited to Döberitz to inspect the mechanism and suggest ways that its action might be duplicated.Woodman 1989, p. 180.