Those penn tech gauges are nice. Always looking for one used.
Steve
Sent from my iPhone
> On Nov 25, 2020, at 9:59 PM, Steve <lists@oakcom.org> wrote:
>
> On 11/25/2020 7:39 PM, Steve, NR4M wrote:
>
>> What is the Loos gauge telling you?
>> Those things were intended for the type of cable used on boat rigging. They
>> probably do that just fine.
>> The finer stranding of the boat cable deflects more easily than the EHS
>> cable would, so I think all bets are off as far as accuracy goes.
>> The best you can do with a Loos gauge, and it probably does it just fine, is
>> show you if the EHS tension is equal.
>> But, if I recall my physics correctly, -if- all guys at any given level are
>> identical ( same distance to each guy anchor, etc) then the tension on any
>> one will be the same as the other two.
>> I have a nice, brand new tension dynamometer and I have been intending for
>> several years on taking pieces of 3/16, 1/4, 5/16 and 3/8 inch EHS, putting
>> them in series with each other and the dynamometer between BIG trees, and
>> try and calibrate a large Loos gauge.
>
> Mostly correct. If you consider the tower as a flexible column, the three
> guys at any level will be fairly equal in tension. Anyone who installs taller
> R45 & R55 towers knows that intuitively. If it were a rigid column, not so
> much. It so happens though that even big towers when engineered for maximum
> efficiency turn out to be fairly flexible because the guy levels are spaced
> way further apart.
>
> When I mentioned deflection gauge I was thinking of something like a
> Penn-Tech, which comes with a table letting you measure either EHS or bridge
> strand *fairly* accurately.
>
> -Steve K8LX
>
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