[TowerTalk] Solid Al vs Solid fiberglass ?

[Steve Maki]

Fiberglass guy rod is in the same ballpark as EHS steel in terms of 
tensile strength, so I'm not surprised at what you've found so far.

-Steve K8LX

On 1/22/2017 18:06 PM, Jim Thomson wrote:

> Which is stronger,  1 inch  6061-T6  solid rod...... or  1 inch solid fiberglass rod ?
> I know what the tensile + yield  strength is on 6061-T6...... but the typ solid fiberglass rod  gets a bit tricky.
> Extrapolating from metric to queens english, it appears that solid fiberglass rod  has a typ tensile strength
> of  100 ksi, and a yield strength of 88 ksi.     I find this real hard to believe,  but I have zero knowledge of the
> typ solid fiberglass rods sold  for insulators for yagis and ants.
>
> 6061-T6  is typ listed as 48 ksi for tensile , and  39-40 ksi for yield.
>
> I have an application where  I have to either short out the oem 1 inch solid fiberglass rod, or  replace it with solid 1 inch 6061-T6 rod,
> and this is way out on each ele half, like 200 inchs  out from the center...with another 204 inchs of tapered al tubing beyond each insulator.
> If the fiberglass is stronger, I might just short it out with an Al strap.
>
> If I knew the aprx yield strength of the solid fiberglass, then I could plug the numbers into  the  dx eng mech software.
>
> Jim   VE7RF