Today's Message Index:
----------------------
1. 12:05 AM - Was: Lost tool, now: Charity auction (Jeff Point)
2. 07:18 AM - Fuel pump not self priming (George Inman 204 287 8334)
3. 09:10 AM - Re: Fuel pump not self priming (scott bilinski)
4. 10:17 AM - Re: Fuel pump not self priming (Kevin Horton)
5. 11:15 AM - Re: Fuel pump not self priming (Ed Anderson)
6. 12:14 PM - New style VFR charts (James H Nelson)
7. 02:20 PM - Re: New style VFR charts (John Lenhardt)
8. 08:05 PM - netralizing alodine solution (tom sargent)
9. 09:56 PM - Re: netralizing alodine solution (Vanremog@aol.com)
Message 1
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Subject: | Was: Lost tool, now: Charity auction |
Listers,
About a week ago, I posted about a lost tool that I found at Oshkosh.
Well, after having exhausted all means of finding the rightful owner, I
have decided to turn the lost tool into a charity auction.
Details can be found here:
http://www.vansairforce.com/community/showthread.php?t=33099
I encourage everyone to check out this thread and consider bidding/
donating.
Jeff Point
RV-6 built & flying/ RV-8 building
Milwaukee
do not archive
Message 2
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Subject: | Fuel pump not self priming |
I just did the fuel flow test on my RV-8.
When first starting the electric fuel pump,it did not draw fuel from
the tank.I had to blow into the vent line to force fuel through to the
pump.
This means the pump is not self priming.This is a concern because if
I run one tank dry,and switch to the other tank I want it to draw fuel.
Have others noticed this?
I have fuel injection and Van's Airflow performance boost pump
P/N3090050.
Instruction with the pump say--
"Ideally the boost pump should be installed so that under normal flight
conditions the pump inlet will be gravity fed from the fuel supply"
I installed it per Van,s drawings. This shows the pump on the floor
of the cabin,but the filter is mounted vertically above.So it would not
be gravity
fed.
--
George H. Inman
ghinman@mts.net
Message 3
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Subject: | Re: Fuel pump not self priming |
This may be a case where once it is primed it will not have a problem from here
on out. Try draining the line to the pump, hook everything back up and then hit
the pump switch again.I bet it will be ok...........if not...........call AFP?
We also use these pumps here at work (same MFG) and have noticed that some of the
pumps take 20~30 seconds to build up their pressure.
Scott Bilinski
RV-8a
----- Original Message ----
From: George Inman 204 287 8334 <ghinman@mts.net>
Sent: Friday, August 15, 2008 7:16:52 AM
Subject: RV-List: Fuel pump not self priming
I just did the fuel flow test on my RV-8.
When first starting the electric fuel pump,it did not draw fuel from
the tank.I had to blow into the vent line to force fuel through to the
pump.
This means the pump is not self priming.This is a concern because if
I run one tank dry,and switch to the other tank I want it to draw fuel.
Have others noticed this?
I have fuel injection and Van's Airflow performance boost pump
P/N3090050.
Instruction with the pump say--
"Ideally the boost pump should be installed so that under normal flight
conditions the pump inlet will be gravity fed from the fuel supply"
I installed it per Van,s drawings. This shows the pump on the floor
of the cabin,but the filter is mounted vertically above.So it would not
be gravity
fed.
--
George H. Inman
ghinman@mts.net
Message 4
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Subject: | Re: Fuel pump not self priming |
I had the same problem the first time I tried to test my AFP boost pump. Then,
while doing fuel flow testing, I inadvertently sucked the tank dry. I poured
more fuel in the tank, and the boost pump reprimed just fine.
I don't know what is inside these pumps. Is it possible that there are seals that
dry out after awhile, and this prevents the pump from priming? Maybe the
problem does not exist when the seals are damp. I will do several flight tests,
overhead the airport, where I run a tank dry and then switch tanks. I will
do the tests with increasing time delay before switching tanks.
Kevin Horton
On Fri, Aug 15, 2008 at 09:08:13AM -0700, scott bilinski wrote:
>
> This may be a case where once it is primed it will not have a problem from here
on out. Try draining the line to the pump, hook everything back up and then
hit the pump switch again.?I bet it will be ok...........if not...........call
AFP?
> We also use these pumps here at work (same MFG) and have noticed that some of
the pumps take 20~30 seconds to build up their pressure.
>
> Scott Bilinski
> RV-8a
>
>
>
>
> ----- Original Message ----
> From: George Inman 204 287 8334 <ghinman@mts.net>
> To: RV-list matronics <rv-list@matronics.com>
> Sent: Friday, August 15, 2008 7:16:52 AM
> Subject: RV-List: Fuel pump not self priming
>
>
>
> ? ? ? ? ? ? ? ? ? ? I just did the fuel flow test on my RV-8.
> When first starting the electric fuel pump,it did not draw fuel from
> the tank.I had to blow into the vent line to force fuel through to the
> pump.
> ? ? ? ? This means the pump is not self priming.This is a concern because if
> I run one tank dry,and switch to the other tank I want it to draw fuel.
> ? ? ? Have others noticed this?
> ? ? I have fuel injection and Van's Airflow performance boost pump
> P/N3090050.
> ? ? Instruction with the pump say--
> "Ideally the boost pump should be installed so that under normal flight
> conditions the pump inlet will be gravity fed from the fuel supply"
>
> ? ? ? I installed it per Van,s drawings. This shows the pump on the floor
> of the cabin,but the filter is mounted vertically above.So it would not
> be gravity
> fed.
>
> --
>
> George H. Inman
> ghinman@mts.net
>
>
>
Message 5
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Subject: | Fuel pump not self priming |
George,
I use High pressure fuel pumps for my electronic fuel injected engine. I
have them both mounted as low as I could on the lower firewall (below the
level of the bottom of the wing tank). I have found (as you did) that once
"primed" they draw fuel just fine from the tanks. Most of the EFI pump
cautions will tell you that if no fuel to lubricate the pumps can quickly
result in damage to the pump.
So to address those concerns, I installed a small ("Van's" ) low pressure
Facet pump between the wing tanks and the pumps. I turn it on before
switching tanks. Once primed my pumps have never had to have the facet pump
on for starting and sucking fuel. However, even the smallest air leaks in
the line anywhere between the pumps and the tanks could cause loss of prime.
I use the facet pump on start up (to keep possibly dry pumps from damage)and
as mentioned - whenever getting ready to switch tanks. Its worked from me
for 10+ years.
Ed
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
http://www.andersonee.com
http://members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.dmack.net/mazda/index.html
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of George Inman 204
287 8334
Sent: Friday, August 15, 2008 10:17 AM
Subject: RV-List: Fuel pump not self priming
I just did the fuel flow test on my RV-8.
When first starting the electric fuel pump,it did not draw fuel from
the tank.I had to blow into the vent line to force fuel through to the
pump.
This means the pump is not self priming.This is a concern because if
I run one tank dry,and switch to the other tank I want it to draw fuel.
Have others noticed this?
I have fuel injection and Van's Airflow performance boost pump
P/N3090050.
Instruction with the pump say--
"Ideally the boost pump should be installed so that under normal flight
conditions the pump inlet will be gravity fed from the fuel supply"
I installed it per Van,s drawings. This shows the pump on the floor
of the cabin,but the filter is mounted vertically above.So it would not
be gravity
fed.
--
George H. Inman
ghinman@mts.net
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Message 6
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Subject: | New style VFR charts |
There are supposed to be a new style of VFR chart available for the east
coast at the moment. Does any one know who has them? They are a version
that has been used in Europe.
Jim Nelson
N15JN
RV9-A
____________________________________________________________
Click to go wireless with your computer, ultra fast speed.
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Message 7
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Subject: | Re: New style VFR charts |
They are the new and as of now limited avaialability VFR+GPS charts from
Jeppesen. Here's a link to the webpage.
http://www.jeppesen.com/wlcs/index.jsp?section=vfr&content=publications_vfr-gps.jsp
John Lenhardt
#40262
Roanoke, VA
>
> There are supposed to be a new style of VFR chart available for the east
> coast at the moment. Does any one know who has them? They are a version
> that has been used in Europe.
>
Message 8
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Subject: | netralizing alodine solution |
I've been told there is a way to neutralize used alodine solution so it
is safe to dispose of. (It has hexavalent chromium in it as do some
primers - strontium chromate, I think - which is a carcinogen.) The
process involves adding sulphuric acide and something else. Does any
one know the details of this process?
--
Tom S., RV-6A
Message 9
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Subject: | Re: netralizing alodine solution |
In a message dated 8/15/2008 8:06:04 P.M. Pacific Daylight Time,
sarg314@comcast.net writes:
I've been told there is a way to neutralize used alodine solution so it
is safe to dispose of. (It has hexavalent chromium in it
Actually the newer MIL-C-5541 Type II chem film solutions meet RoHS
requirements by not containing hexavalent chromium.
N1GV (RV-6A, Flying 895hrs, O-360-A1A, C/S, Silicon Valley)
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