Hello Bruno , & nils d
These Light Blue pieces at the Top , Left of the photo ...are the "S-shaped T -Handle " that the pilot uses to "Engage" the interrupter / synchroniser gear .
This handle is connected via the ball-jointed blue rod , to the Black sync' linkage parts which are fitted in a box on the Top Front Cover of the Vickers MG .
Push Forward on the "T" handle , out towards the Left of the Strut . This in turn pulls Back the Blue Linkage Rod to engage the mechanism .
The linkages from the motor , through the MG cooling jacket of the French Early mechanical type rod Sync' system* , operate on the trigger bar , which is locater horizontally just inside and under the rear top cover plate .
( * note rods return-spring housing , located directly above the Vickers Muzzle Booster , at the front of the gun )
I believe that this "Bowden" cable goes down to connect to the "triggers" at the top of the control column .
I assume that this photo is of the Sopwith machine .
The standard vickers type rear sight is seen at the bottom of the photo , on the left side in the " layed down" position .
Photo nicely shows the " Chicken wire " inside the ? laminated ? windscreen glass to prevent it from shattering when/if hit by a bullet .
Last edited by John McKenzie; 29 April 2012 at 01:41 AM.