Solid is not stronger than hollow as it was explained to me its about
surface area. What would be interesting is carbon fiber and epoxy resin
over a round mold.
[mailto:email@example.com] On Behalf Of Don Havlicek
Sent: Thursday, February 28, 2002 6:50 AM
To: WB9UWA Jim Shaffer
Subject: Re: [Towertalk] Strength of fiberglass.
Solid fiberglass rod is HEAVY .. much heavier than the same
length/diameter of aluminum.
WB9UWA Jim Shaffer wrote:
> Hi All,
> I am designing a VHF yagi array and strongly considering using
> for the booms. Does anyone have a strength rating for fiberglass that
> to the layman? For example, if 10 feet of 1/2" solid rod fiberglass
> how many pounds of weight would cause the end of the rod to deflect 1
> (stiffness rating)?
> Also, and probably of greater importance, because even PVC can be
> if done properly, how much weight at the end of this pole does it take
> catastropic failure of the fiberglass (yeild strength)? I have heard
> of fiberglass antennas
> bending way over in the wind and recovering fully. This is the sort of
> design I have in mind. I have some industry standard numbers for
> but they
> are not something that I can make sense of. The strength rating is
> like 30,000 PSI.
> 73, Jim Shaffer, WB9UWA.
> Towertalk mailing list
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