The internal diameter of the turret ring is 34 .2 inch ,from the bottom of the arch that carries the rotating service joint to the underside of the joint equals 25 7/8 inch plus 2 3/4 inch will take you to the point that you require.
I will post the actual size and thickness of the turret inner ring within the next couple of days…………..I hope this is of some help?

wanted FN5 and FN50 parts

Can any of you turret fans help in the location of a FN5 and a FN50 turret rings .I have managed to obtain enough parts recreate both of these turrets , although most of these parts have been dug out of a dump they are slowly coming to life once again with a o lot of patience ,oil , sharp chisel and a big hammer!

Just need the rings now to bolt them onto , failing that has any one got the internal diameter of these rings?

Nearly forgot a quick message to turret boy ,i managed to locate a trigger assembly so i can now make a pattern to have new ones made ,thanks again…..colin:love-struck:

Hi Mike
Thats brilliant , i have the remains that fasten to the top of the hand grip and with the aid of your pictures i can now produce a pattern to have some made ,any chance of a picture of the the trigger on its own .thanks again colin

Another call for help!
Can any one help with the overall dimension of the bottom edge of the main support frame for the mid upper?
This will be the distance inbetween the two outer blue markers ,thanks.:eagerness:

Heres a couple more pictures of turret parts , as you can i`ve already restored one of the control grips ,unfortunately both sets are missing the thum rest and triggers!
The other two items came of the mid upper turret vertical support frames but again what are they for?
The unit in the middle is a valve which still works and the other should have a piece of tube going vertically through it with a spring fixed inbetween the casting.
The last two pictures are of the FN5 rotary coupling , just to the right you can see the remains of the support frame that i have removed , should the cross section of this be a fold square edge U section with a half round recess rolled into it?……………..:confused:

Thanks very much for the information , thats been a great help!
another item that i am presently restoreing is the mid upper turret fire interupter , theres a lever which you can see protrudeing just to the right of the main body.The left hand section attatches to a moving block which holds an electrical contact , what does the right hand attatch to????????[ATTACH=CONFIG]231932[/ATTACH]

what turret is this of?

[ATTACH=CONFIG]231916[/ATTACH][ATTACH=CONFIG]231917[/ATTACH]

Looks like the fitting fastened inside the tail of the aircraft near the rear turret.

Any ideas as to what turret this hydraulic accumulator is of?