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wnorth(at)sdccd.edu
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 Posted: Sat Dec 29, 2007 10:43 am Post subject: viton seals |
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It would be interesting to compare the relaxation characteristics of viton.
In the buna-n seals part of what retracts the piston is the seal relaxing.
It only takes a few thousandths of an inch, but that is enough to make the
pads last or not.
One of the problems with the DOT series is they are not interchangeable
hence servicing errors cause problems.
The absorbing moisture does not stop its corrosive nature but it does
increase its desire to boil when hot as in gas bubbles in the line.
The rate of brake fires to usage in RVs is one to roughly 20 gazillion and
in all airplanes it's roughly two to 30 gazillion whereas the rate of cold
WX viton seal failures is about one to 175 in space shuttle disasters. I
know, I'm comparing apples to monkeyfied ferguson eggs but what there is to
be so worried that one would redesign a system into a theoretical
not-so-engineered application. The rate-of-failure data doesn't support the
decision to do this.
W
Please note that the calculations for the "all airplane" failure rates were
based upon the numerical fact the RVs rule and will soon dominate the
universe. Also, since I haven't started any good rumors lately have you
heard about the RV-15 in the works. It seems Dick, Dick and Burt have
finally gotten over the metal/plastic rift and we're talking rivets in
space... get out your extra can of proseal boys..... Houston, cover your
ears, count down's a'coming!!!
As well, it's a new age of love and harmony because ECI and Superior are
working out the new Millennium Titan Launch SP-360 Ion Pulsed-Stroker and
King/Garmin will be introducing a Mode SP-8C transponder soon. And the Trio
boys are working out the orbit reentry logarithms for their new UBLIS
Hyper-triaxial light-speed autopilot. (editors note; the new acronym comes
from U B Lost In Space... or at least somebody's lost in space somewhere
near the big galactic cloud that spells out the words " do not archive ")
Of additional note Lightspeed Inc. will somewhat naturally own the marketing
niche for their line of products here, however one already can't hear squat
in space so they'll be working on a product line makeover as it were. I've
submitted a suggestion for a new line of "Marital Bliss" noise canceling
products for those romantic trips to have a Moon-Cheese burger.
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Vanremog(at)aol.com
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| Posted: Sat Dec 29, 2007 11:45 am Post subject: viton seals |
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In a message dated 12/29/2007 10:45:54 A.M. Pacific Standard Time, wnorth(at)sdccd.edu writes:
| Quote: | It would be interesting to compare the relaxation characteristics of viton.
In the buna-n seals part of what retracts the piston is the seal relaxing.
It only takes a few thousandths of an inch, but that is enough to make the
pads last or not. |
======================================
I'll rely on Wheeler to do the comprehensive analysis in this regard while I cover the empirical side of the experiment. I look forward to his report. Maybe I can read it in the light given off by my brakes being on fire. ;o)
N1GV (RV-6A, Flying 883hrs, O-360-A1A, C/S, Silicon Valley)
top rated recipes and easy ways to stay in shape for winter.
[quote][b]
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Ed Anderson
Joined: 10 Jan 2006
Posts: 475
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| Posted: Sat Dec 29, 2007 1:26 pm Post subject: viton seals |
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Wheeler, is correct - the incident of RV brake fires are inconsequential - less you happen to be one of the incidents{:>). No fun being the statistic!
Ed
[quote] ---
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_________________
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com |
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