--- In Indoor_Construction_at_yahoogroups.com, "leop12345" <leop@...> wrote:
dI do not know how much glue is needed to hold down the boron fibers (I hope to remember to weigh a wing spar before and after sometime). Maybe Mark or someone else knows.>>
Not I! It's a personal thing according to how firmly you want it attached. Whatever glue % weight I suggest, someone else will say they use half that weight in glue, and I wouldn't doubt they do. I used to figure on about 50% of the boron's weight in glue, believing that boron *had* to be well attached all along a spar. But now believe if the boron is not buckling in the other direction (fore to aft) and it's at least attached along most of the spar's length, the boron still seems to function as a "rigging" of sorts even where not firmly attached. (Of course talking parallel spaced boron pairs here.)
> The bottom line, in my amateur opinion, is that boron fibers are the best stiffener material available for indoor planes at the current time.>>
Prolly so, and I wasn't being rhetorical in asking Bill--how do I separate a consistent strand of carbon from carbon fabric, weighing 8 mg per 24"? I have some .004 uni-D carbon, but from 1999. Will that do, Bill?
Mark F1diddler
Received on Wed Jan 05 2011 - 19:22:21 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:46 CET