Fuel/Water, Bearing/Rust

[Bob Pastorello]

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
> >
> > =====================================
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> > #
> >
> >
>
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