remedial engine question

[Lance Van Nostrand]

The 140 is top quality.  Get some new bearings and think about your cooling
plans.  170 has double rows of bearings and won't wear out due to loads, but
can still rust.  I've sold a few 170 bearings and each person has said they
got 300+ flights from the originals.
--lance

----- Original Message ----- 
From: "Anthony Romano" <anthonyr105 at hotmail.com>
To: <discussion at nsrca.org>
Sent: Monday, August 25, 2003 1:25 PM
Subject: Re: remedial engine question


> Hi Lance,
> The YS treated me well. After the piston update the engine has been very
> reliable for over three hundred flights. Power is dropping now and it will
> go in for a rebuild this winter.
> The trouble I am having is with a brand new RX. Maybe I should have saved
up
> my money and bought a 1.70?
>
> Anthony
>
>
> >From: patterndude at comcast.net
> >Reply-To: discussion at nsrca.org
> >To: discussion at nsrca.org
> >Subject: Re: remedial engine question
> >Date: Mon, 25 Aug 2003 18:02:48 +0000
> >
> >Anthony, didn't give up on the 4 banger already, did you?
> >
> >--
> >District 6 AVP
> >www.aeroslave.com
> > >
> > > After a lot of experience I have concluded that bearing life is highly
> >variable
> > > in a stressed environment.  30-200 flights are possible in the same
> > > airplane,engine on bearings purchased at the same time.  Factory OS
> >bearings
> > > seem to be the worst quality, but there are some that will claim they
> >last
> > > forecver.  I am just combining all the input to make a general
> >statement. We
> > > can reduce the variability by providing a better operating env.  Our
> >bearings
> > > exceed their tolerances at about 250 degrees, which is not that hot,
so
> >put a
> > > cooling scoop on the front or use cheeck cowls to something to keep
air
> >flowing
> > > over the bottom of the crank.  Use a low viscosity oil fuel like
Magnum
> >or
> > > Powermaster special fuel or heli.  Finally, set up fuel delivery to
> >eliminate
> > > lean runs toward the end of the tank.  This greatly stresses the
engine.
> >  Some
> > > top fliers use bladder tank systems.  I just land with 1/3 tank.
> > >
> > > --Lance
> > >
> > > --
> > > District 6 AVP
> > > www.aeroslave.com
> > > > Hi all,
> > > > Have an RX with about thirty flights. The second day out I noticed a
> >squeak
> > > > when turning the prop for restart. Thought something was hitting the
> > > > spinner, checked all that and it stopped. Yesterday heard it again
and
> > > > noticed the bearings feel a little rough. Now hear is the weird part
> >does
> > > > this only when hot. When cold feels fine and runs great. I plan on
> >pulling
> > > > it apart tonight and changing bearings but pretty disappointed at
the
> >short
> > > > life.
> > > >
> > > > Any one have similar experience?
> > > >
> > > > Anthony
> > > >
> > > > _________________________________________________________________
> > > > Enter for your chance to IM with Bon Jovi, Seal, Bow Wow, or Mary J
> >Blige
> > > > using MSN Messenger http://entertainment.msn.com/imastar
> > > >
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