Re: Re: Carbon fiber cloth for Treger's vp prop hub?
I can breathe easier now, we are in agreement after all. Thanks, Ciao,
Phedon
________________________________
From: Tapio Linkosalo <tapio.linkosalo_at_iki.fi>
To: Indoor_Construction_at_yahoogroups.com
Sent: Sun, January 9, 2011 8:08:19 AM
Subject: Re: [Indoor_Construction] Re: Carbon fiber cloth for Treger's vp prop
hub?
On 8.1.2011 21:51, Phedon Tsiknopoulos wrote:
> Hi Tapio,
> Thanks for the detailed description. I shall give it a try. You are
> quite knowlegeable. Thus far I have been doing approx. what you
> described. I precision grind .0035" unidirectional laminate down to .002
> or .001" and then taper the width from about .1875" to approx. .093" and
> glue it down with epoxy Which laminating epoxy do you use or recommend?
> Most people I know use CA. Thanks.
You mention "laminate" and "grinding", so is your carbon already a
laminate, and not untreated rowing? If that is the case, then various
glues can be used to attach it to balsa. Even cellulose glue would do.
CA would be also ok, if it can be applied sparingly enough.
But, if you want to produce a laminate from the tow/cloth, then for the
best strength-to-weight you need lamination epoxy and pressure. As a
matter of fact, for my models (especially outdoor) I build most of
gadgets from carbon parts that are dremeled out of carbon "shapes" -
sheet, right angles, U or O profiles, which I simply produce by curing
some layers of epoxy-impregnated cloth between suitable aluminum
profiles. With some clamps squeezing extra epoxy out, this material
makes nice building blocks for the mechanical parts. The keyword is the
pressure/clamping.
For the brand of laminating epoxy I do not have a suggestion. I use West
Systems Ampreg 20 myself, but I think any brand (readily available) will do.
-Tapio-
Received on Sun Jan 09 2011 - 15:52:40 CET
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