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Larry Pieniazek wrote:
> John Morgan wrote:
>
> > > Maybe I should just loan you my testing machine....
> >
> > Why don't we just send both of them to Larry?<grin> I am sure He would agree
> > with that train of thought. (1)
>
> Works for me. I'll even pay for shipping. :-) Just kidding.
Well, people, I think we'd better get down to some serious business...
> I think we
> need to see instructions for the tester! That way we can all reproduce
> the results. But, maybe we need to compare several testers to see how
> much variability there is between testers testing the same (or identical
> but different parts) compressors. Ai!
Agreed. Building instructions on the way soon as I can see whether improvements are
required as as been variously suggested:a. use an angle sensor
b. use a pressure sensor
c.straighten the curved line, etc
Or keep it as it is , following the adage "If it ain't broke, don't fix it".
> This is the classic "how do you calibrate the measuring tool if you
> don't have a standard to start from". We have no idea how much
> variability there is in things like springs and piston friction and
> pivot friction, which in turn can mean that two testers get different
> measurements of the same pump, or two identical pumps give different
> measurements on the same tester...
A whole field of research has opened up. Certainly, there's a lot still to be
done.
--
C S Soh
http://web.singnet.com.sg/~cssoh
... where air is power
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