Curious OS 1.40 RX Problem

[Wayne Galligan]

Ron,

On my OS 1.40RX if I experienced a change similar to that and the thing had
been running flawlessly before that it usually meant the bearing was on its
way out.  Mine would load up in the mid range and flame out.  Change bearing
and not even touch the settings outside minor top end adjustment and it
would run fine again.

Wayne Galligan

----- Original Message ----- 
From: "Ron Van Putte" <vanputte at cox.net>
To: <discussion at nsrca.org>
Sent: Tuesday, June 15, 2004 12:52 PM
Subject: Curious OS 1.40 RX Problem


> John Fuqua has been running an OS 1.40 RX is a Focus with absolutely no
> problems for two years.  A month ago he finished a Panacea and
> installed a new OS 1.40 RX that he'd broken in and flown on his old
> Focus.  Everything was fine in the new Panacea until a week ago.  The
> engine ran fine on the ground, but at varying times airborne, the
> engine would quit rich at full throttle.  We tried a number of things
> until we leaned out the idle mixture.  The problem went away.  I can
> understand any number of reasons why an engine will go lean, but causes
> of going rich are on a short list.  Does anyone have a clue what caused
> this problem?
>
> BTW, leaning out the idle mixture caused the engine to be at a higher
> RPM in the mid-throttle settings and John had to redo the transmitter
> throttle curve to get the throttle response the way he wanted it.
>
> Ron Van Putte
>
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