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Egg has terrible fuel design. At least one crash so far caused by both
vapor lock and inability of pumps to self prime.
-al wick
Artificial intelligence in cockpit, Cozy IV powered by stock Subaru 2.5
N9032U 200+ hours on engine/airframe from Portland, Oregon
Prop construct, Subaru install, Risk assessment, Glass panel design info:
http://www.maddyhome.com/canardpages/pages/alwick/index.html
On Tue, 20 Dec 2005 18:50:41 -0600 "Bobby J. Hughes" <bhughes@qnsi.net>
writes:
> Buly,
>
> Try this one. I have purchased it for the high pressure side.
>
http://store.summitracing.com/default.asp?Ntt=fuel+filter&searchinresults
=false&Ntk=KeywordSearch&DDS=1&N=115&target=egnsearch.asp
>
> Cost-effective filtering for your engine.
> These Aeromotive fuel filters feature an advanced flow-through
> design, to allow steady fuel flow with less than a .15 psi pressure
> drop. Designed for carbureted or fuel-injected engines from 200 to
> 1,000 hp, they're made from 6061-T651 aluminum alloy and have a
> 10-micron filtering element for reliable protection.
>
> Not sure about the cost effective part.
>
> I am also planning to use the same filters as Ed A and Egg subi
> package. . on the low pressure side. I will check pressure loss
> during testing and make a final decision based on head pressure,
> wing dihedral and pressure loss etc.
> Those filter bags that Al is mentioned look good as well but I am
> not sure I could retrofit them into my RV10 tanks. I figure within
> the next year their should be another 100 or so Egg's in the air so
> that is a pretty good test group.
>
> Bobby
>
> ________________________________
>
> From: Rotary motors in aircraft on behalf of Buly
> Sent: Tue 12/20/2005 11:30 AM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Re: Fuel filter selection
>
>
>
> Hi Ed,
> The cars take fuel an inch or so up from the bottom and avoid most
> of
> the sediment. I have cut gas open tanks and you'll be surprised
> what's left inside after few years. At least on my plane the fuel is
>
> drained at the tank's lowest point, and I would like to have any
> sediment or water to come out and be trapped in the filter/water
> separator, instead of accumulating on the screen inside the tank.
> I'm nervous about installing high pressure filters in the gas lines,
>
> but that's my opinion. Just another 2 connectors that can fail? One
> day If I'm proven wrong, maybe I'll install one too :)
> Buly
>
> On Dec 20, 2005, at 12:10 PM, Ed Anderson wrote:
>
> > Buly, I'm not that knowledgeable about pumps or filters. But, I
> > notice that on the automobiles there is generally a "coarse"
> > filters on the inlets of the pumps in the fuel tanks and "fine"
> > High Pressure filters after the pumps, but before the injectors.
> >
> > Obviously, you have experience that indicates problems with that
> > combination - yet, wonder why we see it in the automobile?
> >
> > Ed A
> >
> > .
> > ----- Original Message ----- From: "Buly"
> <atlasyts@bellsouth.net>
> > To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> > Sent: Tuesday, December 20, 2005 10:24 AM
> > Subject: [FlyRotary] Re: Fuel filter selection
> >
> >
> >> Guys, I don't understand why you are installing filters AFTER the
>
> >> pumps? I sell large SEPAR diesel fuel filters and I always
> >> recommend all the filtering to be done before the pumps and out
>
> >> of the tanks.
> >> Any water or debris if it's allowed to reach the pumps, will be
>
> >> beaten into smaller particles and may be PUSHED thru the filter,
>
> >> or even will damage the pumps.
> >> I personally suffered on my boat by frequent engine stopages in
> >> the worst of times, only to discover that the manufacturer have
>
> >> installed a screen on the pick up tube inside of the tank, where
>
> >> can not be seen or cleaned.
> >> The same manufacturer had to fix or replace number of engines
> only
> >> because he installed the fuel pumps BEFORE the filter. Any water
>
> >> in the fuel was beaten in to fine emulsion and pushed thru the
> >> filter into the injectors. Results were rusted injectors, rusted
>
> >> high pressure pumps and more.
> >> Buly
> >>
> >>> Kelly Troyer wrote:
> >>>
> >>>> Ernest,
> >>>> My opinion also !! There is a potential 90 psi surge
> >>>> pressure from
> >>>> healthy EFI pumps........I do not believe any of the cheap
> glass
> >>>> filters
> >>>> are rated that high !!
> >>>
> >>>
> >>> I love this list. I had not thought to check the pressure
> >>> rating. I just assumed that a filter could take the pressure.
>
> >>> It's not like 90PSI is difficult to design for. But after Mark
>
> >>> suggested it, I went looking. Sho' 'nuff, no rating.
> >>>
> >>> Any of you carbeurated guys want a pretty glass filter for 3/8"
>
> >>> hose lines?
> >>>
> >>> --
> >>> ,|"|"|, |
> >>> ----===<{{(oQo)}}>===---- Dyke Delta |
> >>> o| d |o www.ernest.isa-geek.org |
> >>>
> >>> --
> >>> Homepage: http://www.flyrotary.com/
> >>> Archive and UnSub:
> http://mail.lancaironline.net/lists/flyrotary/
> >>
> >>
> >> --
> >> Homepage: http://www.flyrotary.com/
> >> Archive and UnSub:
> http://mail.lancaironline.net/lists/flyrotary/
> >
> >
> > --
> > Homepage: http://www.flyrotary.com/
> > Archive and UnSub:
> http://mail.lancaironline.net/lists/flyrotary/
>
>
>
>
>
> --
> Homepage: http://www.flyrotary.com/
> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
>
>
>
-al wick
Artificial intelligence in cockpit, Cozy IV powered by stock Subaru 2.5
N9032U 200+ hours on engine/airframe from Portland, Oregon
Prop construct, Subaru install, Risk assessment, Glass panel design info:
http://www.maddyhome.com/canardpages/pages/alwick/index.html
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