Re: Carbon (Kevlar) Prop Outlines

From: <themaxout_at_aol.com>
Date: Wed, 19 Dec 2012 16:21:35 -0500 (EST)

One would think an easy way to mold fiber prop outline would be to carve
the upper surface of the desired prop from a block. Then, use the outline
and that surface as the prop jig. Wax the form and the prop outline would
be made from whatever fiber/etc. Using that carved form as the jig then
makes it seem fairly straightforward.
 
Rick Pangell
Editor of "The Max-Out" Newsletter of
The Magnificent Mountain Men FF Club of Colorado

 
In a message dated 12/19/2012 1:25:55 P.M. Mountain Standard Time,
lauren.rezac_at_yahoo.com writes:

I have been reading about the Kevlar and Carbon prop outline method by
Lutz Schram, described in INAV 121 and 123. They describe the construction
of the outlines but talk very little about the forming jigs. Since the
method cures the twist of the blades during construction of the outline, the
method for including the appropriate twist into the forms would be a key
issue. Is there somewhere I could find further discussion about the construction
of the forms? The forms in Issue 121 seem to be flat (no spanwise twist)
while the forms in issue 123 seems to have significant twist. Also, the
forms are assembled using fasteners. Is this done to create a trough to layup
the carbon/Kevlar? Were the construction forms molded on a prop pitch
block?



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Received on Wed Dec 19 2012 - 13:21:36 CET