Today's Message Index:
----------------------
1. 05:44 AM - Re: Carb Calibration (Catz631@aol.com)
2. 07:52 AM - carb sync (Lynn Vandevort)
3. 08:19 AM - Re: carb sync (LarryMcFarland)
4. 10:34 AM - Re: Carb Calibration (Noel Loveys)
5. 12:04 PM - Re: carb sync (Noel Loveys)
6. 12:11 PM - Re: carb sync (Noel Loveys)
7. 05:09 PM - Re: carb sync (rampil)
8. 05:11 PM - Re: carb sync (Roger Lee)
Message 1
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| Subject: | Re: Carb Calibration |
I am in total agreement with an in panel gauge. Maybe you could come up with
some sort of valve in the cross tube(of course it would probably leak air). I
have a knob on the back of one of my throttle cables and can make micro
adjustments on the carb sync without ever getting out of the aircraft.It does a
great job of syncing one carb to the other. But alas, I have to have the gauge(I
use a Twin Max) to get it "on the money"
Maybe someone will invent something.
Dick Maddux
Kitfox 4
Rotax 912UL
Pensacola,Fl
**************Nothing says I love you like flowers! Find a florist near you
now. (http://yellowpages.aol.com/search?query=florist&ncid=emlcntusyelp00000002)
Message 2
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Am I the only guy who is afraid to stand 2 feet from a spinning prop and
sync the carbs. I run the gauge into the cockpit, read the
differential, shut off the engine and make an adjustment then start the
engine and repeat until I have them synced.
I can't bring myself to work on the carbs while the prop is spinning.
I have a Highlander with a 914 soon to be on Czech amphibious floats.
Thanks,
Lynn
Message 3
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Lynn,
You might inquire if the prop can be removed. My Subaru will run without
a prop with no consequence. I prefer to adjust carbs, ignition and such
without
the prop on. For the extra 30-minutes it takes to remove the prop there
is real added safety.
Larry McFarland 601HDS at www.macsmachine.com
Lynn Vandevort wrote:
> Am I the only guy who is afraid to stand 2 feet from a spinning prop
> and sync the carbs. I run the gauge into the cockpit, read the
> differential, shut off the engine and make an adjustment then start
> the engine and repeat until I have them synced.
>
> I can't bring myself to work on the carbs while the prop is spinning.
>
> I have a Highlander with a 914 soon to be on Czech amphibious floats.
>
> Thanks,
> Lynn
> *
>
> *
Message 4
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| Subject: | Carb Calibration |
You would have to also install a centre valve in the cross tube to be able
to shut down the cross flow make a reading. As for leaks not properly
installed. My beef would be more weight.
Noel
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of
Catz631@aol.com
Sent: Saturday, February 14, 2009 10:09 AM
Subject: Re: RotaxEngines-List: Carb Calibration
I am in total agreement with an in panel gauge. Maybe you could come up with
some sort of valve in the cross tube(of course it would probably leak air).
I have a knob on the back of one of my throttle cables and can make micro
adjustments on the carb sync without ever getting out of the aircraft.It
does a great job of syncing one carb to the other. But alas, I have to have
the gauge(I use a Twin Max) to get it "on the money"
Maybe someone will invent something.
Dick Maddux
Kitfox 4
Rotax 912UL
Pensacola,Fl
_____
Nothing says I love you like flowers!
<http://yellowpages.aol.com/search?query=florist&ncid=emlcntusyelp00000002>
Find a florist near you now.
Message 5
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I certainly wouldn't like to stand That close in front of the prop but
standing behind it has never bothered me. I'm always aware it is there and
for that reason I always have one hand on the A frame of the cockpit or a
cowl support just to feel more at ease. I find it also helps to have the
wind from the prop blowing me away from it than pulling me into it. Just
one of the reasons that I don't like the idea of propping an engine from the
front.
If you feel safer jumping into the cabin to take the readings then do it
that way. Better to be safe and alive than ...
I've worked around helicopters a bit and I don't mind ducking under the tail
boom to go from the left to the right but I give that tail rotor a lot of
respect and lea-way.
Noel
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Lynn
Vandevort
Sent: Saturday, February 14, 2009 12:14 PM
Subject: RotaxEngines-List: carb sync
Am I the only guy who is afraid to stand 2 feet from a spinning prop and
sync the carbs. I run the gauge into the cockpit, read the differential,
shut off the engine and make an adjustment then start the engine and repeat
until I have them synced.
I can't bring myself to work on the carbs while the prop is spinning.
I have a Highlander with a 914 soon to be on Czech amphibious floats.
Thanks,
Lynn
Message 6
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The Subaru is gear driven the Jabiru is direct drive. That can make all the
difference. The good old Lyc. And Conti engines use the prop as part of the
flywheel and they can be real buggers to get running without the prop or a
test paddle. Idling without the prop on those engines is just not going to
happen. The old Bell 47-G which used a "conventional engine", mounted
vertically, without a fly wheel had to "idle" just below cruise throttle
settings ( 200 comes to mind but it may have been higher. Getting one of
those things to start in cold weather was ... let's say fun. Getting the
rotor clutches engaged without stalling the engine was another ball game
altogether. The colder it got the harder it got. Hard to believe they used
those things through the winter in Korea.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of
LarryMcFarland
Sent: Saturday, February 14, 2009 12:49 PM
Subject: Re: RotaxEngines-List: carb sync
<larry@macsmachine.com>
Lynn,
You might inquire if the prop can be removed. My Subaru will run without
a prop with no consequence. I prefer to adjust carbs, ignition and such
without
the prop on. For the extra 30-minutes it takes to remove the prop there
is real added safety.
Larry McFarland 601HDS at www.macsmachine.com
Lynn Vandevort wrote:
> Am I the only guy who is afraid to stand 2 feet from a spinning prop
> and sync the carbs. I run the gauge into the cockpit, read the
> differential, shut off the engine and make an adjustment then start
> the engine and repeat until I have them synced.
>
> I can't bring myself to work on the carbs while the prop is spinning.
>
> I have a Highlander with a 914 soon to be on Czech amphibious floats.
>
> Thanks,
> Lynn
> *
>
> *
Message 7
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Larry,
Without a load on the crankshaft, a rotax 9xx will overspeed easily
and destroy its pistons and valves. Not Recommended!
Refer to page 12 of the 912 Install Manual May 1 2007 version
--------
Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=230281#230281
Message 8
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Do not run a Rotax 912 series engine without the prop.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Service Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=230282#230282
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