Today's Message Index:
----------------------
1. 07:53 AM - Re: engine whine in 3300 engine (N1BZRich@AOL.COM)
2. 08:44 AM - Re: engine whine in 3300 engine (Jabiru USA)
3. 09:13 AM - Re: engine whine in 3300 engine (Paul Mulwitz)
4. 01:32 PM - Re: engine whine in 3300 engine (doncherie)
5. 01:35 PM - Re: engine whine in 3300 engine (doncherie)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: engine whine in 3300 engine |
Don,
Are you hearing this whine through the headset? Is it there with
headset off? Do you hear it with the intercom off? I guess the answer to that
is
yes, since you mentioned it is still there with the master off. If the noise
has just recently started, then something has changed. Wiring short or
chaffing, etc.
Blue Skies,
Buz Rich
PS: I have about 117 hours total time on my 3300 since the first flight
last December. It is a great engine.
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | engine whine in 3300 engine |
Don,
It sounds like you will have some investigating to do. Some possible causes
would be alternator or regulator, distributor shaft or rotor, vacuum pump
(if you have one). Somehow you need to get these items out of the picture
one at a time until the noise goes away. This is the first time someone has
described a noise as a whine so I'm a bit lost as to where to look.
Pete
_____
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of doncherie
Sent: Tuesday, June 13, 2006 12:39 AM
Subject: JabiruEngine-List: engine whine in 3300 engine
I have recently experienced a "whine" in the engine from 1200 RPM and below.
The whine disappears at exactly 1200 rpm and reappears once throttling back
to that rpm.
We have taken the alternator out of the housing and checked for wear = none
visible.
Cowlings have been removed to check for vibration of the engine on the cowls
etc.Whine still persists!
Engine has been run without master switch on to check if electrical noise
exists.
The engine is 117 hrs old and has been regularly and meticulously
maintained.
Any suggestions?
Regards,
Don Boyd
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | engine whine in 3300 engine |
Hi Don,
I recently bought a low cost "Mechanic's Stethoscope" from Harbor
freight. I hoped it would help in locating an air leak in my car
from old weather stripping. It is a cheap stethoscope with a long
metal tube attached so you can point it in a particular direction and
see how strong the noise is.
I never did get to test this tool - I bought a new car instead. It
doesn't cost very much, so it might be worth a try.
Paul
XL wings
no engine yet.
At 08:43 AM 6/13/2006, you wrote:
>I have recently experienced a "whine" in the engine from 1200 RPM and below.
>
>The whine disappears at exactly 1200 rpm and reappears once
>throttling back to that rpm.
>
>We have taken the alternator out of the housing and checked for wear
>= none visible.
>
>Cowlings have been removed to check for vibration of the engine on
>the cowls etc.Whine still persists!
>
>Engine has been run without master switch on to check if electrical
>noise exists.
>
>The engine is 117 hrs old and has been regularly and meticulously maintained.
>
>Any suggestions?
---------------------------------------------
Paul Mulwitz
32013 NE Dial Road
Camas, WA 98607
---------------------------------------------
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: engine whine in 3300 engine |
Hi Buz,
The whine is definitely not through the headsets and is still there with
intercom and master off.
You can actually hear it from outside the aircraft
Regards,
Don
----- Original Message -----
From: N1BZRich@aol.com
To: jabiruengine-list@matronics.com
Sent: Wednesday, June 14, 2006 1:04 AM
Subject: Re: JabiruEngine-List: engine whine in 3300 engine
Don,
Are you hearing this whine through the headset? Is it there with
headset off? Do you hear it with the intercom off? I guess the answer
to that is yes, since you mentioned it is still there with the master
off. If the noise has just recently started, then something has
changed. Wiring short or chaffing, etc.
Blue Skies,
Buz Rich
PS: I have about 117 hours total time on my 3300 since the first
flight last December. It is a great engine.
-------------------------------------------------------------------------
-----
6/7/2006
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: engine whine in 3300 engine |
Hi Pete,
Jabiru Australia have emailed me back and suggested that at 1100 rpm a
whine often develops in the 3300 engine and is a result of the
alternator and stator. they suggest replacing it, but I am still in
discussion as to why it all of a sudden appeared.
Regards,
Don Boyd
----- Original Message -----
From: Jabiru USA
To: jabiruengine-list@matronics.com
Sent: Wednesday, June 14, 2006 3:43 AM
Subject: RE: JabiruEngine-List: engine whine in 3300 engine
Don,
It sounds like you will have some investigating to do. Some possible
causes would be alternator or regulator, distributor shaft or rotor,
vacuum pump (if you have one). Somehow you need to get these items out
of the picture one at a time until the noise goes away. This is the
first time someone has described a noise as a whine so I'm a bit lost as
to where to look.
Pete
-------------------------------------------------------------------------
-----
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
doncherie
Sent: Tuesday, June 13, 2006 12:39 AM
To: jabiruengine-list@matronics.com
Subject: JabiruEngine-List: engine whine in 3300 engine
I have recently experienced a "whine" in the engine from 1200 RPM and
below.
The whine disappears at exactly 1200 rpm and reappears once throttling
back to that rpm.
We have taken the alternator out of the housing and checked for wear
= none visible.
Cowlings have been removed to check for vibration of the engine on the
cowls etc.Whine still persists!
Engine has been run without master switch on to check if electrical
noise exists.
The engine is 117 hrs old and has been regularly and meticulously
maintained.
Any suggestions?
Regards,
Don Boyd
-------------------------------------------------------------------------
-----
6/7/2006
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|