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Re: [FlyRotary] Rational for TES "O"
Rings
I don't know how you figure
the TES seals could raise the temp but I am concerned at how stiff
they are and in the application of the rotors I think the seals need
to be softer and more flexible but that's just an eyeball engineers
point of view, the Viton seals have worked just fine for me and in my
early days of sorting things out I was running very high oil temps and
still had no problems with the O-rings, if it works I don't fix
it.
I am however using the TES O-rings in
the rotor housing and like them and will stick with them but this is
an application where I don't think they need to be flexible as with
the rotors but then again I am just an eyeball engineer.
Ken Welter
Rusty and all,
I am of
the opinion (yet to be proven ) that the use of TES seals in
the
rotors may raise the critical temp for
oil.......It is well known that the 13B
is most efficient with oil temps in the
160 to 200 F range and that power
suffers above these numbers........I do
not advocate flying with oil temps
above those numbers but most of us will
struggle with oil temps as we
sort out our oil cooling
systems.........My hope is that the TES seals will
provide a safety buffer for oil temp by
preventing the rotor oil seals from
going away with short periods of over
temp during test flying......The
same can be said for the inner coolent
seal as well with the outer seal
probably not a real problem (but they are
less expensive than stock)........
FWIW
--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2
-------------- Original message from keltro@att.net (Kelly
Troyer): --------------
Rusty,
Chuck Dunlap is currently flying with TES
O-rings supplied to him
by Paul Lamar........ These are Creavey seals of the sizes
determined
by Paul L.......I failed to ask Chuck the flying hours on
these seals.....
Chuck jump in here if you are listening !! I do know that
the flying
conditions in Arizonia where he lives put a strain
on both coolent
and oil cooling systems and their respective
seals.......If there are
others currently flying these seals in the rotors I am not
aware of
who they are !!
--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2
-------------- Original message from "Russell Duffy"
<13brv3@bellsouth.net>: --------------
The Rotor Oil Seal O-ring sizes are:
(Credit to Paul Lamar)
PFA-SIL
0.093" section 4.680 inch ID
$4.59 each
PFA-SIL 0.118" section 4.330 inch
ID $4.47
"
The Coolent
O-ring sizes are:
PFA-SIL
0.093" section 11.190 inch ID
$8.33 "
PFA-SIL 0.093"
section 8.950 inch ID
$6.60 "
Hi
Kelly,
Thanks for posting the
final results of your quest. This will be good info
to stash away. If nothing else, these are quite a bit
cheaper than the stock rings.
Is anyone currently
using the TES o-rings for the oil seals, and have significant time on
them?
Cheers,
Rusty
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