Doug,

 

Not exactly a problem of thickness, but one of stiffness.  The original specification was not adequate and I added a bar of 1/4" foam and many additional layers of unidirectional carbon to provide stiffness across the center of the canopy between the hinge attachments.  I had problems with the gas springs squeezing the canopy edges inboard and causing the center to bend (and lift) slightly.  Bi-directional with only add weight as it is the unidirectional running from side to side that will add to the needed stiffness.

 

Hi folks, the forward hinge canopy calls for up to 18 bid of unidirectional carbon fiber.  I measured the thickness and according to the plans it should be around .140".  The only unidirectional fiber I've found measures in at .023, or about 7 bid.  Has anyone else come across this and what did you do?  Did any of you use bi-directional CF with any problems?

Thanks
Doug

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