Today's Message Index:
----------------------
1. 02:28 PM - Re: Fuel pump recall (JetPilot)
2. 02:34 PM - Re: Looking for 912 fuel return line alternatives (JetPilot)
3. 03:43 PM - Re: Re: Looking for 912 fuel return line alternatives (Jack Kuehn)
4. 05:37 PM - Re: Fuel pump recall (Roger Lee)
5. 06:52 PM - Re: Re: Fuel pump recall (Hugh McKay III)
6. 08:11 PM - Re: Fuel pump recall (Roger Lee)
7. 09:14 PM - Re: Re: Fuel pump recall (Hugh McKay III)
Message 1
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| Subject: | Re: Fuel pump recall |
Hi Roger,
What type of fuel line and fire sleeve did you use ? I have been wanting to do
this, but did not know which is the best for a 912 type installation... Where
did you get it ? Also which clamps did you use ? I safty wired all my fuel
tubing on the fitting.
My eninge is just over a year old, wonder how many service bullitens there are
on it :( The fuel pump is easy enough, but the grapevine has it that there
might be more that apply to newer engines.
Has anyone tried the Purolator oil filter on the 912 yet ?
Mike
--------
"NO FEAR" - If you have no fear you did not go as fast as you could
have !!!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103265#103265
Message 2
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| Subject: | Re: Looking for 912 fuel return line alternatives |
Be careful not to change those carb pressure sensing lines, or outlets. There
was a case where someone routed tubing from those down to the bottom of the plane
to dump any overflow overboard... As luck would have it, it changed the
pressure enough that the engine would quit ONLY IN FLIGHT when the airspeed created
a very low pressure on those carb overflow tubes [Shocked] Talking to
the pilot, it was a very very close call for the pilot and plane.
Mike
--------
"NO FEAR" - If you have no fear you did not go as fast as you could
have !!!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103266#103266
Message 3
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| Subject: | Re: Looking for 912 fuel return line alternatives |
I have 110 hours on my Rotax 912 UL and I have those carb pressure
sensing/overflow lines connected together with blue primer line and
routed to one side of the firewall and inserted in a vented bottle so I
can see if there is any overflow. I have no problem with rough running,
and I have never seen any overflow. All the same, if there ever is any
overflow, I don't want it to run down on the hot exhaust.
Unrelated to this, I also DO have a fuel return to the fuel tank. It is
very simple: I simply TEE'd into the fuel line half way between the two
carburettors and ran a line with a home made restrictor back to the fuel
tank. So it is not a true return line for each carb, but it bleeds out
any air or vapors very effectively, because the TEE is at the highest
point in the fuel system.
Jack
Skyranger N233GH
JetPilot wrote:
>
> Be careful not to change those carb pressure sensing lines, or outlets. There
was a case where someone routed tubing from those down to the bottom of the
plane to dump any overflow overboard... As luck would have it, it changed the
pressure enough that the engine would quit ONLY IN FLIGHT when the airspeed
created a very low pressure on those carb overflow tubes [Shocked] Talking
to the pilot, it was a very very close call for the pilot and plane.
>
> Mike
>
> --------
> "NO FEAR" - If you have no fear you did not go as fast as you could
have !!!
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=103266#103266
>
>
> .
>
>
Message 4
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| Subject: | Re: Fuel pump recall |
Hi Mike,
I'm on the Kolb list , too. I had a Kolb Mark III for 3 years. I now have a Flight
Design CT.
You can get your fire sleve, fuel line and hose clamps from CPS or Aircraft Spruce.
The clamps are supposed to be different from automotive clamps, but I do
not know the difference. When you put the fire sleve on over the fuel line or
actually any line there should be no rubber hose or exposed hose showing under
the fire sleve. It should go from metal fitting on one end to a metal fitting
on the other. The fire sleve should have a coating on the bare ends so the fire
sleve won't soak up oils or fuels. They make a coating for it or you could
use the RV High Temp silicone.
I would go onto the Rotax wesite under "service documentation" and look for any
bulletins.
The purlator filter is a really good filter. It is better than the Fram and Rotax
filter. It is hard to convince some people that change sometimes is good.
--------
Roger Lee
Tucson, Az.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103297#103297
Message 5
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| Subject: | Re: Fuel pump recall |
Roger: I have heard various opinions about how many fuel lines on the 912 UL
should be fire sleeved. My Allegro 2000 has 6 lines that can have fuel in
them to varying degrees as follows:
1. Main fuel pressure line from the electric fuel pump through the firewall
to the mechanical pump on the engine.
2. Fuel line from the mechanical pump on the engine to the fuel manifold
("neck 5").
3. Fuel line from the fuel manifold to Carb. #1.
4. Fuel line from the fuel manifold to Carb. #2.
5. Fuel line to the fuel pressure gauge on the panel.
6. Fuel return line back through the firewall to the main tank.
Do all of these lines require fire sleeves?
Hugh McKay
Allegro 2000
N661WW
912UL
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com]On Behalf Of Roger Lee
Sent: Tuesday, March 27, 2007 8:37 PM
Subject: RotaxEngines-List: Re: Fuel pump recall
Hi Mike,
I'm on the Kolb list , too. I had a Kolb Mark III for 3 years. I now have a
Flight Design CT.
You can get your fire sleve, fuel line and hose clamps from CPS or Aircraft
Spruce. The clamps are supposed to be different from automotive clamps, but
I do not know the difference. When you put the fire sleve on over the fuel
line or actually any line there should be no rubber hose or exposed hose
showing under the fire sleve. It should go from metal fitting on one end to
a metal fitting on the other. The fire sleve should have a coating on the
bare ends so the fire sleve won't soak up oils or fuels. They make a coating
for it or you could use the RV High Temp silicone.
I would go onto the Rotax wesite under "service documentation" and look for
any bulletins.
The purlator filter is a really good filter. It is better than the Fram and
Rotax filter. It is hard to convince some people that change sometimes is
good.
--------
Roger Lee
Tucson, Az.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103297#103297
Message 6
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| Subject: | Re: Fuel pump recall |
Hi Hugh,
You're supposed to have any rubber type fuel line sleved. If a carb line is metal
then no sleveing. The rubber style lines up to the fire wall should be sleved
and any other lines in the engine compartment that are of the rubber type line
and that is not metal. The fire wall is supposed to be sealed where any line
goes through to stop any fire or smoke travel into the cabin. The fire sleve
is supposed to give you time to get to the ground before the engine compartment
erupps in flames. If that happens a lot of aircraft are only fiberglass or
plastic and they will burn very fast when fuel is added. Gasoline gan get fires
up to 2000 degrees and then add plastic then you won't be able to breath in
an enclosed cabin. It will be engulfed in flames before you get down. I knew
a guy whose Rotorway helicopter caught fire in flight. It happened so fast he
was dead when he tried to land and he wasn't very high up. Plastic, wing fiber
covering and fuel burn very hot and produce toxic fumes when together.
--------
Roger Lee
Tucson, Az.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103325#103325
Message 7
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| Subject: | Re: Fuel pump recall |
Roger: Thanks! They all will be sleeved I assure you.
Hugh
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com]On Behalf Of Roger Lee
Sent: Tuesday, March 27, 2007 11:11 PM
Subject: RotaxEngines-List: Re: Fuel pump recall
Hi Hugh,
You're supposed to have any rubber type fuel line sleved. If a carb line is
metal then no sleveing. The rubber style lines up to the fire wall should be
sleved and any other lines in the engine compartment that are of the rubber
type line and that is not metal. The fire wall is supposed to be sealed
where any line goes through to stop any fire or smoke travel into the cabin.
The fire sleve is supposed to give you time to get to the ground before the
engine compartment erupps in flames. If that happens a lot of aircraft are
only fiberglass or plastic and they will burn very fast when fuel is added.
Gasoline gan get fires up to 2000 degrees and then add plastic then you
won't be able to breath in an enclosed cabin. It will be engulfed in flames
before you get down. I knew a guy whose Rotorway helicopter caught fire in
flight. It happened so fast he was dead when he tried to land and he wasn't
very high up. Plastic, wing fiber covering and fuel burn very hot and
produce toxic f!
umes when together.
--------
Roger Lee
Tucson, Az.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=103325#103325
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