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pitts_pilot(at)bellsouth.
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 Posted: Sat Oct 07, 2006 9:46 am Post subject: Facet Pump Failure |
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Bob, can't comment on the choice of pumps (I'll probably use the cylindrical type) but here's my thoughts on gascolators.
1. they're a PITA to keep from leaking down the road and they're more fittings to deal with.
2. if you sump, and the wing sumps are the lowest points, why do you need another place to 'trap' stuff????
I'd put a replaceabler filter inline where you only have one line ...... such as after the tank valve, but before the pump ...... unless your pump has a screen built in ....... just to catch the fine stuff that MAY get past the sumps. Some folks feel that if you're going to have the fittings for the filter, you just might as well go the gascolator route, but you can buy a lot of filters for what you'd pay for the gascolator.
I guess there's no wrong way to approach this scenario so it boils down to personal preference.
Linn
Bob Collins wrote:
[quote] [quote]--> RV-List message posted by: "Bob Collins" <bcollinsrv7a(at)comcast.net> (bcollinsrv7a(at)comcast.net)
I'm coming to this thread late so forgive me. I also don't really know
diddly, yet, about engines as I don't have one. I installed an Airflow HP
fuel pump because a lot of builders who I've been getting advice from did
(same rason I bought a TATCO hand squeezer so you'd think I'd learn, eh?)
When you talk about filtering both wings....do you mean separately? As
in,...two filters? As you may know the AF doesn't do that either.
I'm also still kickng around whether I should put a Gasoclator on my RV.
Some people say you don't need one with an AF pump, others say "why not?"
And for those with the AF pump, how do you service that filter without
having fuel spilling all over the the floor and carpet.
Apologies in advance if these sound stupid. I blame my parents for that. (g)
Do not archive.
Bob
[quote]--
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Bruce(at)glasair.org
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| Posted: Sat Oct 07, 2006 10:09 am Post subject: Facet Pump Failure |
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Please, don't put anything in-line on your fuel system unless it has a bypass valve.
Bruce
www.glasair.org
[quote]
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Gary.A.Sobek
Joined: 09 Jan 2006
Posts: 217
Location: SoCAL USA
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| Posted: Sat Oct 07, 2006 11:18 am Post subject: Facet Pump Failure |
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I remember reading from EAA the following statistics.
Running out of gas was the number 1 cause of engine stoppage in Amateur
Built aircraft.
Number 2 was fuel stoppage due to changes in fuel system.
Gary A. Sobek
"My Sanity" RV-6 N157GS O-320 Hartzell,
1,953 + Flying Hours So. CA, USA
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dan(at)rvproject.com
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| Posted: Sat Oct 07, 2006 12:37 pm Post subject: Facet Pump Failure |
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| Quote: | And for those with the AF pump, how do you service that filter without
having fuel spilling all over the the floor and carpet.
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1. Fuel valve OFF when you do this.
2. If you can, let the plane sit overnight (after the last run) before you
crack open the fittings at the filter.
3. Put a rag under it.
A little fuel does drip out, but if you keep the filter *level* as you
remove it, you shouldn't spill any. Once you have the filter out of the
airplane, tip it and dump out whatever residual fuel was in there.
I've done this half a dozen times and it's no big deal. Obviously don't do
it with the system pressurized. 
)_( Dan
RV-7 N714D (1088 hours)
www.rvproject.com / www.weathermeister.com
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FLYaDIVE(at)aol.com
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| Posted: Wed Oct 11, 2006 4:31 am Post subject: Facet Pump Failure |
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In a message dated 10/7/2006 1:25:15 PM Eastern Standard Time, bcollinsrv7a(at)comcast.net writes:
| Quote: | When you talk about filtering both wings....do you mean separately? As
in,...two filters? As you may know the AF doesn't do that either.
I'm also still kickng around whether I should put a Gasoclator on my RV.
Some people say you don't need one with an AF pump, others say "why not?"
And for those with the AF pump, how do you service that filter without
having fuel spilling all over the the floor and carpet.
Apologies in advance if these sound stupid. I blame my parents for that. (g)
Do not archive.
Bob |
[quote][b]
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FLYaDIVE(at)aol.com
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| Posted: Wed Oct 11, 2006 4:47 am Post subject: Facet Pump Failure |
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In a message dated 10/7/2006 1:25:15 PM Eastern Standard Time, bcollinsrv7a(at)comcast.net writes:
| Quote: | When you talk about filtering both wings....do you mean separately? As
in,...two filters? As you may know the AF doesn't do that either.
I'm also still kickng around whether I should put a Gasoclator on my RV.
Some people say you don't need one with an AF pump, others say "why not?"
And for those with the AF pump, how do you service that filter without
having fuel spilling all over the the floor and carpet.
Bob |
==================================
Bob:
YES - Filtering is done on both wings right in the cabin BEFORE it gets to the fuel selector or the fuel pump. I used LARGE clear plastic auto motive type. Make sure you install it in the correct direction and CAREFULLY take a Xacto Knife and remove and flashing around the in & out fittings. ALSO - Make sure you de-burr the ID of the cut fuel lines. You don't want to reduce the flow due to the rolled in burr from cutting the lines.
I am one of those that do not believe in the Gascolator ... I do believe in a LOW POINT collection point and drain. I have seen two problems with the Gascolator, one is brand related in that it would NOT open and takes quite a bit of twisting force on the firewall; the brand is the ANDAIR.
The other problem I have seen is when the cowl was installed ... The hole in the cowl did not match to the Gascolator and since it did not the drain/purge function of the Gascolator was lost.
Pump servicing - Best would be to move the pump to the forward side of the firewall. Other than that ... towels.
Barry
"Chop'd Liver"
[quote][b]
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