Today's Message Index:
----------------------
1. 06:27 AM - Re: carb synch hose sizes (Roger Lee)
2. 02:59 PM - 914 Electric Fuel pumps (Alan Carter)
3. 03:10 PM - Re: 914 Electric Fuel pumps (Robert Borger)
4. 03:28 PM - Re: 914 Electric Fuel pumps (Dave)
5. 03:32 PM - Re: 914 Electric Fuel pumps (Alan Carter)
6. 03:40 PM - Re: 914 Electric Fuel pumps (Alan Carter)
7. 05:19 PM - Re: Re: 914 Electric Fuel pumps (Robert Borger)
8. 06:22 PM - Re: Re: 914 Electric Fuel pumps (Robert Borger)
Message 1
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| Subject: | Re: carb synch hose sizes |
I can get the needles dead on for idle and the high rpm settings. Once you do it
a few times it doesn't take long. If you do it each annual or 100 hrs. it's
a piece of cake. I always do a running engine. I wear goggles and ear muffs and
I give that prop a wide berth. The wheels are always chocked and someone is
in the cockpit.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
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| Subject: | 914 Electric Fuel pumps |
Hi All.
The other day haven flown, I was sitting on the ground engine stopped,
I was fiddling with the GPS for about 25 mins, trying to learn how to store a route,
I had left both fuel pumps running, ??
Heard the noise but it did not register, Crazy.
Any damage or problem I may have caused , pumps running engine stopped on ground
about 25-30 minutes.
Alan
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| Subject: | Re: 914 Electric Fuel pumps |
Hi Alan,
As long as your fuel selector is set for fuel flow and there's fuel flowing through
the pumps, they are probably OK.
If you ever run a pump without fuel flow through it, it will only last about a
minute before it fails.
The fuel flow is absolutely necessary to cool and lubricate the pump.
How was the flight?
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop.
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Jun 27, 2013, at 4:59 PM, Alan Carter <alancarteresq@onetel.net> wrote:
Hi All.
The other day haven flown, I was sitting on the ground engine stopped,
I was fiddling with the GPS for about 25 mins, trying to learn how to store a route,
I had left both fuel pumps running, ??
Heard the noise but it did not register, Crazy.
Any damage or problem I may have caused , pumps running engine stopped on ground
about 25-30 minutes.
Alan
Message 4
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| Subject: | Re: 914 Electric Fuel pumps |
That may be if the pump is dry
Dave Alberti
262-853-5421
On Jun 27, 2013, at 5:10 PM, Robert Borger <rlborger@mac.com> wrote:
>
> Hi Alan,
>
> As long as your fuel selector is set for fuel flow and there's fuel flowing through
the pumps, they are probably OK.
>
> If you ever run a pump without fuel flow through it, it will only last about
a minute before it fails.
>
> The fuel flow is absolutely necessary to cool and lubricate the pump.
>
> How was the flight?
>
> Blue skies & tailwinds,
> Bob Borger
> Europa XS Tri, Rotax 914, Airmaster C/S Prop.
> Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
> 3705 Lynchburg Dr.
> Corinth, TX 76208-5331
> Cel: 817-992-1117
> rlborger@mac.com
>
> On Jun 27, 2013, at 4:59 PM, Alan Carter <alancarteresq@onetel.net> wrote:
>
>
> Hi All.
> The other day haven flown, I was sitting on the ground engine stopped,
> I was fiddling with the GPS for about 25 mins, trying to learn how to store a
route, I had left both fuel pumps running, ??
> Heard the noise but it did not register, Crazy.
> Any damage or problem I may have caused , pumps running engine stopped on ground
about 25-30 minutes.
>
> Alan
>
>
>
>
Message 5
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| Subject: | Re: 914 Electric Fuel pumps |
Hi Bob.
Fuel selector was on, pumps working through out but it did notice a change in
tone towards the end,
The flight was good, the weather was good, the plane was good, and i was good in
talking to Thames Radar, need the practice,
Just by coincidence radar asked me to turn East, to avoid traffic,
That evening i got an e-mail from the Capitan of the airliner, he had recognized
my voice from years ago, and had me on his TECAS , and was watching me out of
his window.
Small world. right place at right time.
Alan
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| Subject: | Re: 914 Electric Fuel pumps |
Hi all.
The pumps run continuously in flight, Fuel is going through, but on the ground
no air flow around pumps,?
Fuel returning to tank, via carbs bowels ? i think?
Is there any chance of the fuel getting into the engine,? ie small jet nozzle .
Alan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=403542#403542
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| Subject: | Re: 914 Electric Fuel pumps |
Alan,
One of the pumps runs continuously in the air. The other should be off. No more
air flow around them in the air than on the ground if they are under the baggage
compartment as per build manual. They are cooled by fuel flow through them.
There's no fuel coming out of the float bowls except through the main jet. The
float controls that and if it shuts the fuel off then no more fuel can get into
the bowl. Excess fuel returns to the tank via the fuel pressure regulator.
There should be no chance of fuel getting into the engine if all is plumbed correctly
and the float is operating properly. There is an overflow on the float
bowl should excess fuel be introduced but, if all else is correct, that shouldn't
happen.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop.
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Jun 27, 2013, at 5:40 PM, Alan Carter <alancarteresq@onetel.net> wrote:
Hi all.
The pumps run continuously in flight, Fuel is going through, but on the ground
no air flow around pumps,?
Fuel returning to tank, via carbs bowels ? i think?
Is there any chance of the fuel getting into the engine,? ie small jet nozzle .
Alan
Message 8
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| Subject: | Re: 914 Electric Fuel pumps |
Alan,
Brain fart. The 914 float bowl is pressurized and therefore can not have an overflow.
The 912 has the float bowl overflow.
No fuel gets out of the float bowl on a 914 except through the main jet or starting
carb (often referred to as "Choke").
So there should be no fuel getting into the engine with the fuel pumps on and engine
not running.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop.
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Jun 27, 2013, at 7:19 PM, Robert Borger <rlborger@mac.com> wrote:
Alan,
One of the pumps runs continuously in the air. The other should be off. No more
air flow around them in the air than on the ground if they are under the baggage
compartment as per build manual. They are cooled by fuel flow through them.
There's no fuel coming out of the float bowls except through the main jet. The
float controls that and if it shuts the fuel off then no more fuel can get into
the bowl. Excess fuel returns to the tank via the fuel pressure regulator.
There should be no chance of fuel getting into the engine if all is plumbed correctly
and the float is operating properly. There is an overflow on the float
bowl should excess fuel be introduced but, if all else is correct, that shouldn't
happen.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop.
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Jun 27, 2013, at 5:40 PM, Alan Carter <alancarteresq@onetel.net> wrote:
Hi all.
The pumps run continuously in flight, Fuel is going through, but on the ground
no air flow around pumps,?
Fuel returning to tank, via carbs bowels ? i think?
Is there any chance of the fuel getting into the engine,? ie small jet nozzle .
Alan
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