Re: Re: New AMA F1D Cat I Record

From: William D. gowen <wdgowen_at_gmail.com>
Date: Tue, 27 May 2014 14:07:44 -0400

I'm not sure what pre-treatment Nick uses. For my purposes I've found it
necessary to dribble some very dilute Duco down the length of the tow to
hold the fibers together. The fibers in the Russian fabric are
considerably shorter than in normal tow and will pull apart easily if
not pre-treated.

On 5/27/2014 9:29 AM, mkirda_at_sbcglobal.net [Indoor_Construction] wrote:
>
> Hi Linardic.
>
> Since Nick hasn't responded, I'll try to answer.
> I've seen Nick's F1D and we talked about this some.
>
> He used some of the Russian Unidirectional cloth sold by Mike
> Woodhouse. (CST's stuff cannot be separated easily.)
> He separates strands from the fabric and uses (IIRC) Ambroid to attach
> it to the wood.
> The way I understand this is that two jigs are required.
> One concave, one convex. The outline is built flat. I don't know if he
> uses temporary spacers or not.
> The outline is wetted and put down on the 'hill' jig. When dry, carbon
> is applied.
>
> Afterwards it is put into the 'valley' jig and carbon is again
> applied. Temp spacers, if used would be replaced with ribs.
>
> I don't know if the carbon is preglued, I imagine so, but some
> experimentation with technique could be useful.
> I'd first try suspending one end and pregluing it nice and straight
> before application. YMMV.
> I know that Nick doesn't like boron due to the buckling and he says
> that with the carbon he has had much less of an issue with buckling
> compared to boron.
>
> Covering is done with crinkled OS film. I believe he uses a covering
> jig a la Lutz as described by Nick Aikman.
>
> Regards.
> Mike Kirda
>
>
Received on Tue May 27 2014 - 11:07:49 CEST