Today's Message Index:
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1. 04:48 PM - Oil Pressure Gauge reading (Hugh McKay III)
2. 07:01 PM - Re: Oil Pressure Gauge reading (william sullivan)
Message 1
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| Subject: | Oil Pressure Gauge reading |
Two matters which I need advice on:
1.) The oil Pressure gauge for my Rotax 912 UL engine in my Allegro 2000 ha
s been acting strange recently. Just yesterday I made a 1 hour and 30 minut
e flight from N92 (Laneys Airport) to (KCEU) Oconee County Airport. The oil
pressure gauge during flight normally indicates slightly over 4 bar pressu
re (in the normal green zone). Immediately after engine start the gauge nee
dle will show about 5.5. bar, but after warm up and after takeoff the press
ure will come back down to the 4 bar +/- pressure. However, on this flight
after the oil pressure indication began to creep up to 6.0 bar (in the warn
ing yellow zone). It stayed there for about 10 to 15 minutes, then graduall
y moved back to about 4 bar (in the green zone). This is continuing to happ
en on each cross-country flight. Any explanation as why this is happening?
2.) During operation on the ground and/or in the air my Rotax tach sometime
s will momentarily and suddenly (without any noticeable change in engine so
und or operation) drop in rpm from 5000 to 4000 +/-, fluctuate some and the
n return to 5000. Any explanation as to what may cause this, or what I shou
ld look for as a cause?
Hugh G. McKay III
Allegro 2000 ELSA
N661WW
877 Hours
Rotax 912 UL
hgmckay@bellsouth.net
Phone 704-661-8271
Sent from Mail for Windows 10
Message 2
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| Subject: | Re: Oil Pressure Gauge reading |
My first thought is to clean and tighten all grounds.
Bill Sullivan
On Wednesday, September 29, 2021, 07:49:21 PM EDT, Hugh McKay III <hgm
ckay@bellsouth.net> wrote:
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Two matters which I need advice on:
- The oil Pressure gauge for my Rotax 912 UL engine in my Allegro 2000 h
as been acting strange recently. Just yesterday I made a 1 hour and 30 minu
te flight from N92 (Laneys Airport) to (KCEU) Oconee County Airport. The oi
l pressure gauge during flight normally indicates slightly over 4 bar press
ure (in the normal green zone). Immediately after engine start the gauge ne
edle will show about 5.5. bar, but after warm up and after takeoff the pres
sure will come back down to the 4 bar +/- pressure. However, on this flight
after the oil pressure indication began to creep up to 6.0 bar (in the war
ning yellow zone). It stayed there for about 10 to 15 minutes, then gradual
ly moved back to about 4 bar (in the green zone). This is continuing to hap
pen on each cross-country flight. Any explanation as why this is happening?
- During operation on the ground and/or in the air my Rotax tach sometim
es will momentarily and suddenly (without any noticeable change in engine s
ound or operation) drop in rpm from 5000 to 4000 +/-, fluctuate some and th
en return to 5000. Any explanation as to what may cause this, or what I sho
uld look for as a cause?
=C2-
Hugh G. McKay III
Allegro 2000 ELSA
N661WW
877 Hours
Rotax 912 UL
hgmckay@bellsouth.net
Phone 704-661-8271
=C2-
=C2-
=C2-
=C2-
=C2-
Sent from Mail for Windows 10
=C2-
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