Paul wrote,
> I just went downstairs and measured the flexibility of three planes.
>
> Here is the data, someone else can compute if there's any of that
> to be done...
>
> All three planes were supported 1" in from their extremities and
> a 10 lb weightlifting weight was placed vertically and straddling
> the plane right over the mouth. The deflection was read off the
> sole, in the center, about 1/8" in front of the mouth.
>
> distance
> plane between supports deflection
>
> old #8 21-3/4" 0.0020
> 2 pd #605-1/2 13" 0.0005
> CDN SW #5 12" 0.0008
I changed the support points in like that from 24", adjusted
the loading and measuring points in to where you put them, all
only for my Stanley #8, and got a deflection of 0.007 inches.
Thanks for measuring those things, this is gonna get more
interesting as I keep working on it ( in my spare moments when
I'm exhausted for anything else. ) Yep, there's gonna be more
parts... this stuff is too accessible to be the least bit
controversial.
My estimates were geared to be maximal estimates, i.e. I tried
to give the people who say planes flex like crazy as much benefit
of a doubt as possible. I.e., I'd feel safe saying that you
wouldn't see any _more_ deflection than that, pretty much. To
that end, I had set the side height to be roughly it's minimal
average value of an inch. The side height of mine peaks at
2 3/8 inches, and is above 1.5 inches for a good 5 inches of
plane length. If you set the "effective side height" to 1.5
inches, my earlier calculation matches your result of 0.002 inches
exactly. I think a good estimate of the effective side height is
one of the most critical things here, as far as that calculation
went, barring a more elaborate analysis.
Stay tuned for Parts III+, and notes on the earlier replies to
this thread.
Doug Dawson
dawson@p...
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