Today's Message Index:
----------------------
1. 06:20 AM - Re: boost pump (robert bean)
2. 06:52 AM - Re: Automotive man goes AIR Motive (Peter Davidson)
3. 09:35 AM - Re: Re: boost pump (Brinker)
4. 10:30 AM - Re: Automotive man goes AIR Motive (Brinker)
5. 11:31 AM - Re: Re: Automotive man goes AIR Motive (Brinker)
6. 06:39 PM - Re: Automotive man goes AIR Motive (FLYaDIVE@aol.com)
7. 08:17 PM - Re: Automotive man goes AIR Motive (Marvin Dupree)
Message 1
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--> AnPMech-List message posted by: robert bean <slyck@frontiernet.net>
> Randy: very macho airplane you will be driving.
Advise for engines with high flow rates like yours has to be VERY well
informed.
Everything has to be sized right. You don't mention whether you will be
using a factory or aftermarket FI system. I am more familiar with
little
putt putts.
Here's some good reading:
http://www.avweb.com/news/reviews/182501-1.html
Keep us informed, BB
>
>
Message 2
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| Subject: | RE: Automotive man goes AIR Motive |
--> AnPMech-List message posted by: "Peter Davidson" <pdavidson@familynet.net>
Airmotive man:
Barry didn't seem to answer your question about the primer...
>I have never flow a fuel injected engine, only carbed. But if I'm
>understanding you correctly, you are stating that "ALL" fuel injected
>applications require a boost pump and a fuel primer; Regardless of high or
>low wing. Is that correct ?
In a fuel injected engine, you don't need a primer. The boost pump is used
for priming before starting.
Peter D.
Message 3
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--> AnPMech-List message posted by: "Brinker" <brinker@cox-internet.com>
My system is factory, the Gami injectors look interesting. Would
be nice to have lower cht and better fuel economy. I may try them after I
have the plane in the air for a while. Right now I have enough on my hands
to figure out. I'm more used to the smaller planes too. I fly a 68 Cherokee
140 now. This Comp 6 will be a big transition for me also, being 300hp c/s
prop and a tail dragger. But I like the idea of having enough airplane to
haul a small automotive engine, rear end etc. for delivery to a customer to
give me an excuse to fly more and be able to use it legally for business
puposes. Thanks for the input.
Randy aka Airtomotive man
----- Original Message -----
From: "robert bean" <slyck@frontiernet.net>
Subject: AnPMech-List: Re: boost pump
> --> AnPMech-List message posted by: robert bean <slyck@frontiernet.net>
>
>> Randy: very macho airplane you will be driving.
> Advise for engines with high flow rates like yours has to be VERY well
> informed.
> Everything has to be sized right. You don't mention whether you will be
> using a factory or aftermarket FI system. I am more familiar with
> little
> putt putts.
> Here's some good reading:
> http://www.avweb.com/news/reviews/182501-1.html
> Keep us informed, BB
>>
>>
>
>
>
Message 4
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| Subject: | Re: Automotive man goes AIR Motive |
--> AnPMech-List message posted by: "Brinker" <brinker@cox-internet.com>
I have been debating the best place to install fuel filters.
Before valves sounds logical to keep debris from clogging them. And to be
closer to the tanks. I will be ordering several replacement elements or
several filters depending on type of filter I decide to go with since I am
sure they will get plenty of debris in them at first. The Comp 6 is a
composite airplane with composite tanks so I'm sure there with be some
fiberglass debris in the tanks that will need to be flushed. I expect that
to be a job in itself flushing them.
From what I'm gathering I'm thinking the Facet fuel pump will do
the job since this high wing plane basicly only needs it for starting and
for safety purposes while landing or taking off just in case the manual pump
fails. Maybe Cessna is confident enough to not have boost pumps on their
high wing planes but for the minimal weight consideration and minimal cost
involved I believe I will feel better about it.
Randy aka Aeromotive man
----- Original Message -----
From: <FLYaDIVE@aol.com>
Subject: Re: AnPMech-List: Automotive man goes AIR Motive
> --> AnPMech-List message posted by: FLYaDIVE@aol.com
>
> OK :-) AIR MotiveMan
>
> Consider yourself TAGED! Taging is what happens amounst Formation Pilots.
>
> I have inserted my coments within the body of your email. Please read on.
>
> Barry
> ================================================
> --> AnPMech-List message posted by: "Brinker" <brinker@cox-internet.com>
>
> Yep just call me Airtomotive man Stay tuned for the rest of the
> amazing adventures of Airtomotive man Yeehaah. Leaping tall maybe small
> airplanes and cars and some light trucks in a leaping bound. Faster than
> an
> "el loco" motive.
>
> Yes it is a high wing, thought I posted that info in first email I
> think you may have snipped it. I am familiar with the need for a boost
> pump
> for a low wing airplane and understand why (nothing liquid likes to flow
> uphill without some help).
> I will have left/right fuel valves but the capability to have
> both
> tanks on at the same time similar to most Cessna's.
> I have never flow a fuel injected engine, only carbed. But if I'm
> understaning you correctly you are stating that "ALL" fuel injected
> applications require a boost pump and a fuel primer. Regardless of high or
> low wing. Is that correct ?
>
> YES, that is correct. It is a SAFETY thing.
>
>
> It sounds like you are knowledgeable about these installations so
> let me ask one more question. What is the fuel pressure output required
> for the boost pump ? I have surfed the net looking fo this info and have
> come up nil. And do you fell that with the high wing configuration that a
> lower end unit like a Facet 47860 which put's out 4-5 psi & 30 gph or the
> Facet 480543 which put's out 6.5-7.5 psi & 45gph would be sufficient ? Is
> 6.5-7.5 psi too much pressure ?
>
> There are some FAA requirements about fuel flow and fuel pressure.
> Unfortunately they escape me right now. But for fuel flow unaided, the
> diameter of the
> fuel lines must be large enough to supply TWICE the fuel flow required by
> the
> engine. The BOOST PUMP requirement must also support the flow rate and be
> able to equal the pressure of the mechanical engine fuel pump.
> There is NO PROBLEM if you use the higher pressure BOOST PUMP.
> ALSO! I would HIGHLY recommend putting fuel filters (YES, TWO one in each
> tank supply line) before the fuel selector which also means it is before
> the
> BOOST PUMP. I just replaced TWO FACET Boost pumps tat failed because of
> derbies
> in the fuel. The debris jammed the piston. But, good design of the Boost
> Pump still let the fuel flow freely.
> Barry
> "Chop'd Liver"
Message 5
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| Subject: | Re: RE: Automotive man goes AIR Motive |
--> AnPMech-List message posted by: "Brinker" <brinker@cox-internet.com>
Thank you, I was somewhat confused.
Randy aka Aeromotive man
----- Original Message -----
From: "Peter Davidson" <pdavidson@familynet.net>
Subject: AnPMech-List: RE: Automotive man goes AIR Motive
> --> AnPMech-List message posted by: "Peter Davidson"
> <pdavidson@familynet.net>
>
> Airmotive man:
>
> Barry didn't seem to answer your question about the primer...
>
>>I have never flow a fuel injected engine, only carbed. But if I'm
>>understanding you correctly, you are stating that "ALL" fuel injected
>>applications require a boost pump and a fuel primer; Regardless of high or
>>low wing. Is that correct ?
>
> In a fuel injected engine, you don't need a primer. The boost pump is
> used
> for priming before starting.
>
> Peter D.
>
>
>
Message 6
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| Subject: | Re: Automotive man goes AIR Motive |
--> AnPMech-List message posted by: FLYaDIVE@aol.com
In a message dated 12/16/05 1:31:24 PM Eastern Standard Time,
brinker@cox-internet.com writes:
> Maybe Cessna is confident enough to not have boost pumps on their
> high wing planes
==================
I don't know about ALL Cessnas, but the C-177 Cardinal has a boost pump and
it is a high-wing
Barry
"Chop'd Liver"
Message 7
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| Subject: | Re: Automotive man goes AIR Motive |
--> AnPMech-List message posted by: Marvin Dupree <97corvette@cox.net>
the wings would have to be very high to provide the pressure required
for fuel injection. hence the boast pump.
marvin m20e
On Dec 16, 2005, at 8:38 PM, FLYaDIVE@aol.com wrote:
> --> AnPMech-List message posted by: FLYaDIVE@aol.com
>
> In a message dated 12/16/05 1:31:24 PM Eastern Standard Time,
> brinker@cox-internet.com writes:
>
>> Maybe Cessna is confident enough to not have boost pumps on their
>> high wing planes
> ==================
> I don't know about ALL Cessnas, but the C-177 Cardinal has a boost
> pump and
> it is a high-wing
>
> Barry
> "Chop'd Liver"
>
>
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