Today's Message Index:
----------------------
1. 05:02 AM - Re: Suitable place for electric fuel pump? (Thom Riddle)
2. 10:06 AM - Re: Re: Suitable place for electric fuel pump? (theo van duin)
3. 11:05 AM - Re: Suitable place for electric fuel pump? (Thom Riddle)
4. 06:35 PM - Re: Suitable place for electric fuel pump? (aerosiam)
5. 09:40 PM - Re: Radio, severe background noise (lucyreddy)
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: Suitable place for electric fuel pump? |
The factory installed the electric fuel pump in the central tunnel below the floor
boards in the cabin. The silver colored cylindrical item in the attached photo
is the factory supplied fuel pump. Note that this photo is from an Allegro
that also has the optional fuel tanks in the wing which is the reason for the
extra hoses, compared to those Allegros with only the belly tank. You will notice
that this installation has the electric fuel pump in series with the mechanical
pump instead of in parallel.
--------
Thom Riddle
Buffalo, NY
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x31
The world is round; it has no point.
- Adrienne E. Gusoff
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=271670#271670
Attachments:
http://forums.matronics.com//files/pauls_fuel_line_arrangement_135.jpg
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: | Re: Suitable place for electric fuel pump? |
Thom, thank you for your comment. Do you think that installing the electric
fuel pump
in series with the mechanical pump is considered to be much less reliable
than installing it in parallel?
I never saw the inside construction of a mechanical pump. The only problem
of an in-series installation could be, to my opinion, a blockage of the fuel
flow due to a insidely damaged mechanical pump.
Theo van Duin (France)
Allegro 2000 (71MM)
2009/11/8, Thom Riddle <riddletr@gmail.com>:
>
>
> The factory installed the electric fuel pump in the central tunnel below
> the floor boards in the cabin. The silver colored cylindrical item in the
> attached photo is the factory supplied fuel pump. Note that this photo is
> from an Allegro that also has the optional fuel tanks in the wing which is
> the reason for the extra hoses, compared to those Allegros with only the
> belly tank. You will notice that this installation has the electric fuel
> pump in series with the mechanical pump instead of in parallel.
>
> --------
> Thom Riddle
> Buffalo, NY
> Kolb Slingshot SS-021
> Jabiru 2200A #1574
> Tennessee Prop 64x31
>
> The world is round; it has no point.
> - Adrienne E. Gusoff
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=271670#271670
>
>
> Attachments:
>
> http://forums.matronics.com//files/pauls_fuel_line_arrangement_135.jpg
>
>
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: | Re: Suitable place for electric fuel pump? |
Obviously, the series installation works and the flow from the electric pump does
go through the mechanical pump when the engine is not running. However, my
preference is to install the auxiliary pump in parallel. FYI, the mechanical
pump is a simple diaphragm pump that is activated by a cam lobe on the propeller
shaft. Inspection of this cam lobe and pump is an item on the annual inspection
list and is very easy to do.
If you notice in the photo there is a line running along side of the electric fuel
pump. This line contains a check valve I think. I no longer own an Allegro
so I'm going by memory only. If the Facet pump is small enough and has a built
in check valve to prevent back flow, then there might be room in this under-floor
tunnel to install it in parallel with two fuel lines penetrating the firewall.
--------
Thom Riddle
Buffalo, NY
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x31
The cat could very well be man's best friend but would never stoop to admitting
it.
- Doug Larson
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=271717#271717
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: Suitable place for electric fuel pump? |
Have you checked the Rotax service bulletin for the electric fuel pump? http://www.auf.asn.au/airworthiness/SB-912-053.pdf
On the subject of pumps, I was flying yesterday at 500 feet for 20 minutes and
kept the electric pump on. The fuel pressure dropped to 0.3 bar. When I switched
it off, it returned to a normal 0.4 bar.
Has anyone else had this?
Paul
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=271760#271760
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: Radio, severe background noise |
Hello T.J,
Myself Lucy Reddy.As I know the MA-760 should always be turned off, before starting the aircraft to protect the radio from transient voltages. For more information visit the url : http://www.lowcountrysoaring.org/members/aircraft/pw5/microair_760.html.
--------
sdram
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=271782#271782
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! --
|