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Location: UFOUpDatesList.Com > 2013 > Jul > Jul 2

Re: Binding Force Detector By Bill Beaty?

From: Eleanor White <ewraven1.nul>
Date: Mon, 1 Jul 2013 19:45:28 -0400
Archived: Tue, 02 Jul 2013 06:18:26 -0400
Subject: Re: Binding Force Detector By Bill Beaty?

>From: Ray Dickenson <r.dickenson.nul>
>To: <post.nul>
>Date: Sun, 30 Jun 2013 18:48:44 +0100
>Subject: Re: Binding Force Detector By Bill Beaty?


>The big problem with all of them, including Bill's, is that they
>involve several elements plus another one: that of calibration
>and measurement.

>No. it's not just a matter of accuracy, it's the fact that the
>various elements can be affected in perhaps opposing ways and,
>more serious, that the calibrating and measuring devices _will_
>be affected too - probably cancelling-out any 'real' effect.

I'm still pondering that, and thanks to William for posting a
link to Wilbert Smith's meter, which for reference I have added


(Background lightened up a bit.)

Naturally I'm guessing here. Steel stretches (exhibits strain)
less than nylon. Consequently, referring to the steel spring in
Wilbert Smith's drawing above, it may be that a change in
binding force is going to affect the steel spring less than the
nylon fishing line.

If that is so, the Wilbert Smith meter may still show binding
force variations based on the _differential_ between steel and
nylon's stress-strain properties.

There is a problem with the Smith meter in that the nylon wraps
around the spindle. That is likely to cause friction problems
with the spindle bearings, and if the spindle is of small
diameter compared with the spacing of the bearings, there could
be bending of the spindle as well.

I'd like to suggest an Eleanor White version, which is close to
the Smith meter. In my version, there would be a plug of some
sort of material which slides smoothly in the bore of the tube
which houses the nylon line and spring, placed _between_ the
nylon line and spring. Brass, maybe? Or better delrin, for less
weight?  Fairly generous clearance between the plug and the

There would have to be fittings on each end of the plug so both
the spring and nylon line can attach securely under the working

This plug, which would be a cylinder, would have a groove cut on
a lathe, into which a sensing finger from a good quality
machinist's dial indicator would fit.

If the dial indicator was a spring-loaded type, the sensing
finger would have to press against one side of the groove - it
could not be allowed into the groove with no lateral pressure.
This would ensure the dial indicator would be fully responsive
to small changes in the length of the nylon.

If the dial indicator was not a spring-loaded type, then some
design would be needed so the sensing finger/button would fit
into some sort of spring-loaded detent in the plug, so that the
smallest movement of the nylon would show on the dial.

I would want a fully mechanical dial indicator - no electronics.

I think this would do away with the Smith design's spindle
friction and possible bending problems.

** There is still the variable temperature/humidity problem.

The tubing which houses this instrument should have a generous
number of vent holes drilled in it. Ideally, the outside tubing
would be of a low thermal coefficient of expansion material.

Then, with the instrument carefully taken to a wide variety of
environments - a steamy place, a hot place, a cold place, curves
of normal displacements for variations in humidity and
temperature could be established before taking it on the road.

With such calibration curves available, and with instruments for
reading temperature and humidity taken on the road with the
binding force meter, I believe some useful readings could be
taken. The calibration curves would show how much of measured
displacements are from temperature and humidity variations.

These readings relative to the home of the experimenter are
likely to tell the story as to whether more serious research is

Eleanor White

Listen to 'Strange Days... Indeed' - The PodCast



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