S.S.Bearing- What to Do about it??

[Bill Glaze]

Del:
Isn't transmission fluid petroleum based, and not synthetic?  Would this
damage any pump parts?  Just asking; never used after-run oil in my
life, but I am curious in case I ever feel the need.

Bill Glaze

Del Rykert wrote:

> I have found in the 4 cycles rocker arms and pushrods also rust so why
> not protect them with after run oil. Transmission fluid made great
> after run oil in the 60 size 2 cycles.      Del K. Rykert
>      AMA - 8928
>      NSRCA - 473
>      Kb2joi - General
>
>      ----- Original Message -----
>      From: Henderson,Eric
>      To: discussion at nsrca.org
>      Sent: Tuesday, August 05, 2003 6:15 PM
>      Subject: RE: S.S.Bearing- What to Do about it??
>       Two points were mixed in one sentence, however the oil
>      still goes in to stop the crankshaft rusting.E.
>      -----Original Message-----
>      From: discussion-request at nsrca.org
>      [mailto:discussion-request at nsrca.org]On Behalf Of Dave Smith
>
>      Sent: Tuesday, August 05, 2003 5:12 PM
>      To: discussion at nsrca.org
>      Subject: Re: S.S.Bearing- What to Do about it??
>
>      Eric:   Maybe this is a dumb question,but:- if the bearings
>      are truly sealed,what good does after run oil
>      do?? Regards,,,,,,,,Dave
>
>           ----- Original Message -----
>           From: Henderson,Eric
>           To: discussion at nsrca.org
>           Sent: Tuesday, August 05, 2003 5:44 PM
>           Subject: RE: S.S.Bearing- What to Do about it??
>            What is most curious are the vastly different
>           numbers of runs we all get depending upon fuel and
>           props etc. I do know that my Hannos ran longer
>           than the almost identical OS 61 rear exhaust with
>           pump. I was told it was an electrolytic problem
>           that was solved with differing metals. Hmmm.I do
>           know that I see dry bearings when I do immediate
>           diss-assemblies. The alcohol stuff evaporates and
>           leaves dry oil??So far the only two fixes that
>           have worked are Sealed bearings and SS with lots
>           of oil between sessions. Watch out for sealed
>           bearings though. The rubber can swell and mess up
>           your power and idle.Only thing that I do that I
>           have not mentioned is I severely duct the air over
>           the main bearing on all my OS's. They run at about
>           78F all day. Heat is clearly the enemy. The
>           Japanese told me this and go so far as to run
>           10%. I have a case of 10/16 that I will test on
>           the next 1.60 motor that I run.E.
>           -----Original Message-----
>           From: discussion-request at nsrca.org
>           [mailto:discussion-request at nsrca.org]On Behalf Of
>           Wayne Galligan
>           Sent: Tuesday, August 05, 2003 4:30 PM
>           To: discussion at nsrca.org
>           Subject: Re: S.S.Bearing- What to Do about it??
>
>           Verne, So what is the oil content of the fuel your
>           are using?  I use Cool Power 15/17 and the
>           original set of bearings lasted about 125
>           flights. WG
>
>                ----- Original Message -----
>                From: Verne Koester
>                To: discussion at nsrca.org
>                Sent: Tuesday, August 05, 2003 2:54 PM
>                Subject: Re: S.S.Bearing- What to Do
>                about it??
>                 Bob,The general consensus of pilots I
>                talked to at the Nats (many of whom were
>                long time competitors) was that the
>                engine should have less oil, not more.
>                The general idea was that more oil
>                causes the balls to skid instead of
>                roll. However, little or no oil, which
>                was the case with my engine, causes the
>                bearing to deteriorate rapidly. So far,
>                the sealed, EFI bearing has worked just
>                fine. Verne
>
>                     ----- Original Message -----
>                     From: Bob Pastorello
>                     To: NSRCA
>                     Sent: Tuesday, August 05, 2003
>                     7:17 AM
>                     Subject: S.S.Bearing- What to
>                     Do about it??
>                      Assuming that OS doesn't
>                     offer a solution to
>                     lubrication of the rear
>                     bearing on the 1.40, what
>                     other options are
>                     available?    What mods could
>                     be made to the crankcase to
>                     permit more oil flow back
>                     there?    Would increasing oil
>                     content of fuel make any
>                     difference? If the real core
>                     problem is undersizing of the
>                     bearing for the load
>                     application the motor endures,
>                     then a real fix would be a
>                     redesign of the crankcase to
>                     use a larger and wider
>                     bearing.  Pretty unlikely that
>                     would happen, I would
>                     guess.    So what's the
>                     solution besides keeping the
>                     bearing suppliers
>                     well-funded??
>                     Bob Pastorello, Oklahoma
>                     NSRCA 199, AMA 46373
>                     rcaerobob at cox.net
>                     www.rcaerobats.net
>
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