On 14 Mar 01, at 0:36, Stan or Patricia Griffiths wrote:
> You know, there is a fairly easy way to test all of this and find out
> the real answers. Remember how you could see if your Loos Tension
> device was reading correctly, right in your garage? You hang a piece
> of guy wire vertically from the rafters. You then load it with a
> known amount of weight like a five gallon bucket of pieces of steel
> you have weighed on another scale. You then test the tension in this
< snip >
This is, in theory, a good way to get a known tension! But!!...
If your house and garage are built like mine are, the last sentence
should read "You then buy a bunch of lumber and rebuild your
garage." I tried to lift a small block chevy V-8 off the floor this
way. Thank goodness I had the forethought to try to lift it verrrry
slowly. The rafter flexed downward as I hauled on the block &
tackle. The 500 pound v-8 didn't go up to nearly the extent that the
rafter came down. When I started to hear cracking noises, I
terminated the lift.
I guess what I'm saying is "MY garage's rafters aren't up to a
reasonable calibration of a Loos gauge." Beware!
73,
George T. Daughters, K6GT
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