Today's Message Index:
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1. 02:24 AM - Engine Shudder (Martin Hone)
2. 09:46 PM - Maintainance Schedule for 912S (NYTerminat@aol.com)
3. 09:55 PM - Re: Auto Gas with Ethanol in 912 (Rafael Peres)
Message 1
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--> RotaxEngines-List message posted by: "Martin Hone" <mctrader@bigpond.net.au>
Hi Darryl,
Seeing as it only happens when you are off full throttle and on over-run (
prop driving engine rather than the other way around) it sounds to me like
the engine is running too lean. It could also be running too rich, but I
know my 912 would backfire into the muffler whenever I ran a tank dry.
Check the float levels and security of the carburetor needles,
Cheers
Martin in Oz
1. 05:43 AM - engine shudder (Darryl Braun)
2. 07:33 AM - Re: engine shudder (Richard Holder)
3. 09:14 PM - Re: engine shudder (Darryl Braun)
________________________________ Message 1
_____________________________________
Time: 05:43:13 AM PST US
From: "Darryl Braun" <dvbraun@telus.net>
Subject: RotaxEngines-List: engine shudder
--> RotaxEngines-List message posted by: "Darryl Braun" <dvbraun@telus.net>
I have a situation I hope someone can shed some light on. I'm running a
912 with a 3 blade Warp Drive prop on a 94 Ultravia Pelican PL. If I pitch
the prop for climb and throttle back at altitude I'll get an occasional
engine shudder. It actually feels more like someone hit the engine mount
with a hammer or something, just a quick thump. The engine never misses a
beat. I've tried 2 and 3 blade wood props and finally the Warp Drive to no
avail. I've found that keeping a course pitch on the prop kills the proplem
completely during cruise, but I'd like to be able to pitch for climb on hot
days. When set to a course pitch I can still get the shudder if I decend
too fast with out throttling back. So basically if the engine isn't working
very hard it tends to have this problem. If I keep it working hard... no
problem. I've synced the carbs at every oil change and had the PSRU
inspected and nothing changed. I've talked to my mechanic and even to Rotax
and they don't know what the deal is. Anyone out there know what's going
on?
Darryl Braun
Ultravia Pelican PL
C-GGVS
Cold Lake
Message 2
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| Subject: | Maintainance Schedule for 912S |
List
Am I missing something, I don't seem to be able to find how often Rotax
recommends changing oil and filters on their 912S.
Bob Spudis
N701ZX / 912S 36hrs
Message 3
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| Subject: | Re: Auto Gas with Ethanol in 912 |
Hi!! My name is Rafael, and i live in Brazil.... Here we burn a gas with 22% alchool...
By the way, it's not recomended by rotax, but we see no trouble about
it until now. I don't know the cost of avgas for you, here, for example, U$ 2.10
for a litre, and the Podium gas, by Petrobras (100 octans), U$ 1.39....
I fly a vixen with 912 and 200 hours trouble free. Take a look at www.aeroclubedeituverava.com.br and go to "fotos".....
Have good flights
Rafael
prwelsch@comcast.net escreveu:
Does anyone have long term experience using ethanol containing auto gas in
a 912?
---------------------------------
Msica para ver e ouvir: You're Beautiful, do James Blunt
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