I can confirm that teflon rubs off on the mating material. In
designing process equipment we found that teflon coatings applied to
surfaces would rapidly disappear as thousands of products ran over
that surface.
The other nice thing about the teflon is the static and dynamic
coefficient of friction are the same. However I would run two teflon
washers because there may be more of a tendency for the non teflon
mating surface to have very small burrs or surface conditions that
would cause more of a grabbing or galling action between the two
materials. The first teflon washer would provide a known base for the
second thrust washer.
Of course it has been 45 years since I knew everything so take these
thoughts with a grain of salt and do your own experimenting. To me, a
lot of this hobby is the pleasure of finding things out.
Tom
New York City
--- In Indoor_Construction_at_yahoogroups.com, "Rszanti" <Rszanti@...> wrote:
>
>
> FYI - Teflon against Teflon has a co-efficient of friction that is .04.
> Teflon running against steel (or almost any hard surface) has a
> co-efficient of friction of .04. Yep, there's NO difference. Actually
> the Teflon rubs off on the opposing surface leaving a Teflon against
> Teflon running surface no matter what opposing material you use. The
> opposing surface should be hard and smooth though, for example, aluminum
> would work just fine. I also believe there's now a Teflon impregnated
> with molybdenum disulfide that has an even lower co-efficient.
> There's also many other materials, such as Delrin, than are
> available with impregnated ingredients that lower the friction
> co-efficient and the co-efficient approaches that of Teflon while these
> other materials provide greater wear resistance.
>
> How do I know ? I came from an industry that used these materials to
> improve their products. I was an engineer that did the research to find
> them.
>
> Richard
>
>
>
>
> --- In Indoor_Construction_at_yahoogroups.com, LeRoy C Cordes <lcordes@>
> wrote:
> >
> > Thanks for the answer, Bill. Thinking about it I wondered if I
> shouldn't
> > be using more than one of them.
> >
> > ALSO - it's great that someone, FINALLY, released the secret to being
> a
> > record holder <VBG>
> >
> > LeRoy Cordes
> > AMA 16974
> > Chicago, IL
> > In God We Trust
> >
> > On Fri, 20 Apr 2007 14:02:45 -0400 "Bill Gowen" b.gowen_at_
> > writes:
> > > Not from Tom but an answer anyway!
> > >
> > >
> > > Having adopted the 2 washer plan, I now possess National Records in
> > > all the classes I fly at all ceiling heights.
> > > (this is a joke)
> >
>
>
>
>
> [Non-text portions of this message have been removed]
>
Received on Tue Apr 24 2007 - 06:15:59 CEST
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:45 CET