Fuel/Water, Bearing/Rust

[Bob Pastorello]

A friend corrected me on my 4C statement.  Guess I've been 4C-less so long I
forgot...he said they both have the mix inside the crankcase.
    Must be something else - as others have said, perhaps the 2C reflects
exhaust residues/acids back into the crankcase??

Bob Pastorello, Oklahoma
NSRCA 199, AMA 46373
rcaerobob at cox.net
www.rcaerobats.net


----- Original Message ----- 
From: "Bob Pastorello" <rcaerobob at cox.net>
To: <discussion at nsrca.org>
Sent: Saturday, December 06, 2003 9:07 PM
Subject: Re: Fuel/Water, Bearing/Rust


> 4C - Fuel/air is injected through intake valve.  Bearing hardly has
anything
> on it.
> 2C - Fuel/air is drawn through carb venturi through crankcase port
windows,
> then through bypass ports to top of piston.  Means the bearing is swimming
> in the mix full time.
>
> Bob Pastorello, Oklahoma
> NSRCA 199, AMA 46373
> rcaerobob at cox.net
> www.rcaerobats.net
>
>
> ----- Original Message ----- 
> From: "Jeff Hughes" <jhughes at hsonline.net>
> To: <discussion at nsrca.org>
> Cc: "Bob Pastorello" <rcaerobob at cox.net>; <discussion at nsrca.org>
> Sent: Saturday, December 06, 2003 11:55 PM
> Subject: Re: Fuel/Water, Bearing/Rust
>
>
> > so why don't the 4stroke guys have problems? they are running much
higher
> > nitro contents than the two stroke guys (typically)?
> >
> >
> > ----- Original Message -----
> > From: <vicenterc at comcast.net>
> > To: <discussion at nsrca.org>
> > Cc: Bob Pastorello <rcaerobob at cox.net>; <discussion at nsrca.org>
> > Sent: Saturday, December 06, 2003 4:18 PM
> > Subject: Re: Fuel/Water, Bearing/Rust
> >
> >
> > > I remember reading the Mintor instructions.  The instructions
recommends
> > to run the engine with NO nitro if you are not planing to fly again for
> more
> > than a week.  Also, I remember many years ago when I flew in Venezuela
> with
> > NO nitro and we didn't have bearings problems.  Looks like we need to
find
> > out if Nitro is causing the problems particularly in 2 C engines with
> large
> > pipes.  I think the nitro residues condense and form strong acid that
> > attacks the metals.
> > >
> > > Vicente
> > >
> > > =====================================
> > > # To be removed from this list, send a message to
> > > # discussion-request at nsrca.org
> > > # and put leave discussion on the first line of the body.
> > > #
> > >
> > >
> >
> > =====================================
> > # To be removed from this list, send a message to
> > # discussion-request at nsrca.org
> > # and put leave discussion on the first line of the body.
> > #
> >
>
> =====================================
> # To be removed from this list, send a message to
> # discussion-request at nsrca.org
> # and put leave discussion on the first line of the body.
> #
>

=====================================
# To be removed from this list, send a message to 
# discussion-request at nsrca.org
# and put leave discussion on the first line of the body.
#