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Old Oct 21, 2012, 02:38 PM
Ospreyman is offline
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Cheshunt, Hertfordshire
Joined Aug 2009
224 Posts
I this picture is my method of giving the blades the ability to cone. the hinge material is 2 Laminations of glow fuel container plastic( 5 litre) sandwiched between 1.5mm fiberglass sheet. This gives a nice snug fit between the blade grips.

On the HK cierva three blade head there is a 15 degree 'hinge line' I have incorporated this in the blade holder as shown.
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