THROTTLE SERVO

[Keith Black]

I ran the HS85BB (not MG) and it lasted about 300 flights (or around two
years), before it stuck at wide open throttle just before pulling for the 45
deg inverted snap.  Luckily I noticed before pulling the snap and proceeded
to fly a pylon course with my Aries for the next nine minutes.  If that
wasn't bad enough it started sprinkling about 30 seconds after the throttle
stuck and the visibility started deteriorating (wet prescription sunglasses
didn't help). I had to keep it pretty close so I wouldn't loose sight of it
:-0

I was lucky that the heavy rain held off until after I landed safely. But
needless to it was a stressful nine minutes!

Keith Black

----- Original Message ----- 
From: "Wayne Galligan" <wgalligan at goodsonacura.com>
To: <discussion at nsrca.org>
Sent: Tuesday, March 22, 2005 2:44 PM
Subject: THROTTLE SERVO


> I have been running a HiTec 85MGBB  for my throttle servo.  I have had to
> replace this servo about 3 times in the last 2.5 yrs.   I have seen many
> people run this servo or one this size in the open engine bay and was
> wondering what kind of life you are getting out of your servo's.   When
mine
> go bad its in the mid-range or center the throttle will surge and
sometimes
> it will make the elevator twitch when this happens.    I am going to make
a
> plate and recess the servo out of the engine bay to eliminate the heat and
> fuel.   Could it be vibration at this throttle point could be effecting
the
> pot in the servo...???
>
>
> Wayne Galligan
>
>
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