X-Mozilla-Keys:
Vance Jaqua wrote:
--- Paul <rotaryeng@earthlink.net> wrote:
The impression that we had was that you felt stacking them in any
manner reduced the rate - as the rference said it is somewhat like
series and parallel - nested makes them stiffer for higher load -
stacking like a series of "M"s reduces the force increases the travel,
and you can do combinations for custom load displacement
characteristics - Vance
OK here is my orginal message:
Message-ID: <37D3123F.67E58ABC@earthlink.net>
Date: Sun, 05 Sep 1999 18:00:48 -0700
From: Paul <rotaryeng@earthlink.net>
X-Mailer: Mozilla 3.01 (X11; I; Linux 2.0.33 i686)
MIME-Version: 1.0
To: zz <rotaryeng@earthlink.net>
Subject: New end housings.
Paul wrote:
Jim Dana wrote:
Paul: nikasil coatings are put on by aircraft cylinder
Paul wrote:
snips....
The other problem you are going to run up against is shrinkage
of the aluminum housing when they get too hot because the steel
tension bolts holding the engine together expand at a lower rate
than the alloy housings.
snips.....
Here is an idea for you. Since the tension bolt problem is
causing the rotor housings to shrink when the engine is overheated
and the problem would get worse with aluminum end housings I suggest
a little low cost R&D.
Get a Mazda tension bolt. Get a piece of thick wall aluminum tubing
with approxmately the same ID as the Mazda tension bolt.
Clamp the tubing with the bolt and a nut.
Heat it in a kitchen oven to 200 degrees for an hour or so to
allow everything to stabilize.
more snips....
If you can solve this problem proceed with the design of
the aluminum end housings.
BTW Jim you can get Belleville Washers springs from
W.M.Berg 1-800-232-BERG in east Rockaway N.Y.
The .380 ID version has 235 pounds force when compressed
to .049 high. It starts out at .059 inches high.
When totally flat it is probably history but
the thickness would be .040. Better that than
destroy your rotor housings.
The .505 ID version has 340 pounds force when compressed
to .062 high. It starts out at .075 inches high.
When totally flat it is .050 thick.
******************************************************
You can stack these to double or triple the force.
You can flip them over and run them back to back
to halve the force with twice the deflection.
******************************************************
Now what is it about this paragraph that
confused you guys?
I thought it was clear and succinct!
I just love big hard drives and email :-)
Paul Lamar
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