Zn Line Gear

[Anthony Romano]

Thanks Gray. Will see how much of a mess I can make tonight. Anyone found 
any reasonably priced substitutes?

Anthony


>From: "Gray E Fowler" <gfowler at raytheon.com>
>Reply-To: discussion at nsrca.org
>To: discussion at nsrca.org
>Subject: Re: Zn Line Gear
>Date: Wed, 16 Jun 2004 09:40:29 -0500
>
>Anthony
>
>The question is do you want a pretty repair or one that will last?
>
>Most of the gear I have seen, and I have not seen a ZN Line gear, is
>unidirectional "airfoil" halves glued together. This is a very poor
>composite design, but is easy and cheap to make. Over flexing of the gear
>(poor landings) exceeds the shear strength of the resin matrix, which is
>thousands of times weaker than the fiber.The pretty repair involves
>re-glueing. If you are going to do this epoxy will work much better than
>CA, but of course takes more time and effort.
>The permenant repair (mo'ugly) involves taking a fiberglass yarn (unravel
>some fabric) and wrap it under tension (after re glueing the split) 90
>degrees to the uni carbon. The more tension without breaking the yarn the
>better. You can use CA for this application as it will never get
>overstressed and it will help you be able to wrap with tension as you drip
>thin CA on the fiber.
>
>
>
>Gray Fowler
>Principal Chemical Engineer
>Composites Engineering
>
>
>
>
>"Anthony Romano" <anthonyr105 at hotmail.com>
>Sent by: discussion-request at nsrca.org
>06/16/2004 09:22 AM
>Please respond to discussion
>
>
>         To:     discussion at nsrca.org
>         cc:
>         Subject:        Zn Line Gear
>
>
>
>After a few less than perfect landings one of my gear legs is starting to
>delaminate. The gear appear to have a foam core. Can I just glue the
>halves
>together with foam safe CA? What is the best method of repair? Is this a
>common issue? Anyone have a spare set they are willing to part with?
>
>TIA
>
>Anthony
>
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