bearing up under nomenclature changes

Ron Nossaman RNossaman@KSCABLE.com
Sat, 28 Jul 2001 13:46:15 -0500


Hi gang, I have a question.

What dark and obfuscatory forces are behind this plot to further impede
communication among techs attempting to exchange information about string
bearing angles and forces? Baldwin is pushing the concept of percent of
tension as a bearing measurement. When did this start, and by all that's
unnecessarily confusing - WHY? Sure, you can know immediately what the
bearing load is with any given %tension by multiplying the tension by the
given figure, but who wants to know that when they're specifying or setting
bearing? Only the people who have done some redesign work on the assembly
are going to be remotely concerned what the bearing forces actually are, so
who is this "simplification" for? You can get the functional equivalent by
taking sin(radians(angle)) * tension, but you have to use one of the
infinitely dreaded Trigonometry functions to do it. Sure, you can take
sin(radians(angle))*100 and produce the new and improved %tension figure
for any given angle, but what if you want to know the angle and all you
have to work with is the %tension thing? Just take
degrees(asin(%tension/100)). Simple, right? Isn't it bad enough that we
have to do a chapter and a half of clarification and conversion when
someone quotes bearing in thousandths of an inch or millimeters of bridge
height above the agraffe/aliquot plane and is under the impression they
have conveyed useful information? What the heck is wrong with degrees as a
bearing measurement? The Lowell gauge gives you handy little 1/6°
increments, which looks like 0.2909% of tension per graduation. Simple as
can be, right? Being progressive is all well and good, but why must we
progress into yet another layer of unnecessary confusion when we already
have a simple and universally applicable standard that means the same thing
to anyone, anywhere - if they would just use it? It's a matter of degree.


Ron N


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