Re: Using Boron on outlines.

From: Mark F1diddler <f1diddler_at_yahoo.com>
Date: Wed, 09 May 2012 10:20:20 -0000

--- In Indoor_Construction_at_yahoogroups.com, "jos_melis" <jos_melis@...> wrote:
>
> Dear F1D flyers,
> At what moment should I put the Boron fibers to the outlines?
> I supose that I have to glue them when the stab-outline is on the jig and the ribs are added? Or do I have to glue them to the spars before I bent them around the jig? If so how about the tension it puts on the outline and ribs? Will it not deform the ribs?
> Kindest regards,
> Jos
>

Probably several practices will emerge, but for wing spars, I install boron before slicing the spar away from the larger sheet. Motorsticks and tailbooms, boron right after gluing the seam (while you can still put the mandrel inside whole tube.) Can't recommend boron for F1d stab outlines nor for ribs--pretty rare, there. I do put a pair of very short borons at tissue tubes area of stab, for ground handling more than for air loads.
MB
Received on Wed May 09 2012 - 03:26:00 CEST