Today's Message Index:
----------------------
0. 12:21 AM - November List Fund Raiser (Matt Dralle)
1. 08:47 AM - AFP and fuel pressure and fuel pump (thomas sargent)
2. 09:21 AM - Re: AFP and fuel pressure and fuel pump (wgill10@comcast.net)
3. 09:23 AM - Re: AFP and fuel pressure and fuel pump (Panama Red)
4. 09:52 AM - Re: AFP and fuel pressure and fuel pump (Ralph E. Capen)
5. 05:28 PM - Re: AFP and fuel pressure and fuel pump (Paul Rice)
6. 07:07 PM - Fw: Cleveland wheel bearing part numbers (Charlie England)
7. 07:25 PM - Re: Fw: Cleveland wheel bearing part numbers (Vanremog@aol.com)
8. 08:12 PM - Re: Fw: Cleveland wheel bearing part numbers (Charlie England)
Message 0
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| Subject: | November List Fund Raiser |
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Message 1
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| Subject: | AFP and fuel pressure and fuel pump |
I have the AFP fuel injection unit on my RV-6A and a VM-1000 to monitor the
fuel pressure. When I first started flying it (about 15 hours ago) the fuel
pressure read about 26 psi running on the engine driven pump and would go to
27 when I switched on the boost pump. The pressure produced by the engine's
pump has slowy been decreasing. It now shows about 24psi and even 23psi
once. Turning on the boost pump always brings it back to the 26 - 27 range
(after a brief surge up to 35 or so). The engine seems to run OK either
way.
So, I think the pressure sensor is OK. Is it normal for a fuel pump to sag
a little in the first 15 hours of operation, or do I have a nascent problem
on my hands?
Does any one know the miinimum fuel pressure that AFP needs?
Thanks,
--
Tom Sargent, RV-6A
Message 2
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| Subject: | Re: AFP and fuel pressure and fuel pump |
Tom,
I occasionally experience the same problem, but it seems to be related to h
aving full tanks -- perhaps the fuel vent line is full of fuel causing the
pump to work harder. If I switch tanks, the pressure returns to 25psig. Aga
in, it only happens with full tanks and usually lasts no longer than a minu
te or so...been that way since first flight almost 800 hours ago.
Best regards,
Bill
RV-7 N151WP
Lees Summit, MO
=C2-
----- Original Message -----
From: "thomas sargent" <sarg314@gmail.com>
Sent: Wednesday, November 3, 2010 10:43:43 AM
Subject: RV-List: AFP and fuel pressure and fuel pump
I have the AFP fuel injection unit on my RV-6A and a VM-1000 to monitor the
fuel pressure.=C2- When I first started flying it (about 15 hours ago) t
he fuel pressure read about 26 psi running on the engine driven pump and wo
uld go to 27 when I switched on the boost pump.=C2- The pressure produced
by the engine's pump has slowy been decreasing.=C2- It now shows about 2
4psi and even 23psi once.=C2- Turning on the boost pump always brings it
back to the 26 - 27 range (after a brief surge up to 35 or so).=C2- The e
ngine seems to run OK either way.
So, I think the pressure sensor is OK.=C2- Is it normal for a fuel pump t
o sag a little in the first 15 hours of operation, or do I have a nascent p
roblem on my hands?
Does any one know the miinimum fuel pressure that AFP needs?
Thanks,
--
Tom Sargent, RV-6A
Message 3
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| Subject: | Re: AFP and fuel pressure and fuel pump |
Not a big deal. You are still within limits with 23 PSI. I have been
flying for 8 years with a Bendix system and I don't ever get the same
reading from flight to flight. I don't recall the minimum fuel
pressure, but the answer should be in your Lycoming engine manual. It
is not what AFP needs but what the engine needs that is important.
Bob
----- Original Message -----
From: thomas sargent
To: rv-list
Sent: Wednesday, November 03, 2010 11:43 AM
Subject: RV-List: AFP and fuel pressure and fuel pump
I have the AFP fuel injection unit on my RV-6A and a VM-1000 to
monitor the fuel pressure. When I first started flying it (about 15
hours ago) the fuel pressure read about 26 psi running on the engine
driven pump and would go to 27 when I switched on the boost pump. The
pressure produced by the engine's pump has slowy been decreasing. It
now shows about 24psi and even 23psi once. Turning on the boost pump
always brings it back to the 26 - 27 range (after a brief surge up to 35
or so). The engine seems to run OK either way.
So, I think the pressure sensor is OK. Is it normal for a fuel pump
to sag a little in the first 15 hours of operation, or do I have a
nascent problem on my hands?
Does any one know the miinimum fuel pressure that AFP needs?
Thanks,
--
Tom Sargent, RV-6A
Message 4
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| Subject: | Re: AFP and fuel pressure and fuel pump |
Tom,
Here's what I see on a regular basis (2yrs approx 90 hrs):
Startup is about 17 or so but builds to 30 pretty quickly and then stays there
- boost pump takes it to 33 or so and I've seen it fade down to 29 but come back
to 30.
You may be seeing an electrical resistance increase due to heat where the sender
is mounted. Make sure the sender sees a good ground path.
My thoughts,
Ralph
RV6A N822AR @ N06 - AFP on my XP360 - SJ cowl...just back from paint.
-----Original Message-----
>From: thomas sargent <sarg314@gmail.com>
>Sent: Nov 3, 2010 11:43 AM
>To: rv-list <rv-list@matronics.com>
>Subject: RV-List: AFP and fuel pressure and fuel pump
>
>I have the AFP fuel injection unit on my RV-6A and a VM-1000 to monitor the
>fuel pressure. When I first started flying it (about 15 hours ago) the fuel
>pressure read about 26 psi running on the engine driven pump and would go to
>27 when I switched on the boost pump. The pressure produced by the engine's
>pump has slowy been decreasing. It now shows about 24psi and even 23psi
>once. Turning on the boost pump always brings it back to the 26 - 27 range
>(after a brief surge up to 35 or so). The engine seems to run OK either
>way.
>
>So, I think the pressure sensor is OK. Is it normal for a fuel pump to sag
>a little in the first 15 hours of operation, or do I have a nascent problem
>on my hands?
>
>Does any one know the miinimum fuel pressure that AFP needs?
>
>Thanks,
>
>--
>Tom Sargent, RV-6A
Message 5
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| Subject: | AFP and fuel pressure and fuel pump |
Hey Tom=2C
I am running the same combination on my -8 and see almost identical numbers
to yours. I have been flying mine for over three years and think maybe it
was higher in the beginning. I wouldn't worry about it=2C just monitor it
and have a good time flying. Only other thing I might suggest is remove a
nd clean the sensor and see if that makes any difference at all.
Paul Rice
RV8 / 250 hours
Subject: RV-List: AFP and fuel pressure and fuel pump
From: sarg314@gmail.com
I have the AFP fuel injection unit on my RV-6A and a VM-1000 to monitor the
fuel pressure. When I first started flying it (about 15 hours ago) the fu
el pressure read about 26 psi running on the engine driven pump and would g
o to 27 when I switched on the boost pump. The pressure produced by the en
gine's pump has slowy been decreasing. It now shows about 24psi and even 2
3psi once. Turning on the boost pump always brings it back to the 26 - 27
range (after a brief surge up to 35 or so). The engine seems to run OK eit
her way.
So=2C I think the pressure sensor is OK. Is it normal for a fuel pump to s
ag a little in the first 15 hours of operation=2C or do I have a nascent pr
oblem on my hands?
Does any one know the miinimum fuel pressure that AFP needs?
Thanks=2C
--
Tom Sargent=2C RV-6A
Message 6
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| Subject: | Fwd: Cleveland wheel bearing part numbers |
Hi,
Can anyone refresh my memory on part numbers of the 2seat RV Cleveland
wheel bearings?
I think they are:
8125-20629 (cone)
8231-20629 (race)
But I can't find a reference anywhere.
Thanks,
Charlie
Message 7
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| Subject: | Re: Fwd: Cleveland wheel bearing part numbers |
Charlie-
I don't know whose P/Ns those are (maybe Van's), but from the Parker
Cleveland Parts List, I show the Cone Bearing as Cleveland P/N 214-00400 and the
Race (Cup) as Cleveland P/N 214-00300.
-GV
In a message dated 11/3/2010 7:08:03 P.M. Pacific Daylight Time,
ceengland@bellsouth.net writes:
Hi,
Can anyone refresh my memory on part numbers of the 2seat RV Cleveland
wheel bearings?
I think they are:
8125-20629 (cone)
8231-20629 (race)
But I can't find a reference anywhere.
Thanks,
Charlie
(http://www.aeroelectric.com/)
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(http://www.matronics.com/Navigator?RV-List)
Message 8
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| Subject: | Re: Fwd: Cleveland wheel bearing part numbers |
The numbers I mentioned are the Timken numbers, from Sky Ranch.
http://www.sacskyranch.com/cgi-bin/sh012344.pl?REFPAGE=http://www.sacskyranch.com/acatalog/index.htm&WD=bearings&PN=Sacramento_Sky_Ranch_Bearings_292.html%23a5566#a5566
<http://www.sacskyranch.com/cgi-bin/sh012344.pl?REFPAGE=http://www.sacskyranch.com/acatalog/index.htm&WD=bearings&PN=Sacramento_Sky_Ranch_Bearings_292.html%23a5566#a5566>
I'm pretty sure I'm picking the correct ones, but was hoping someone
could verify.
Thanks,
Charlie
On 11/3/2010 9:15 PM, Vanremog@aol.com wrote:
> Charlie-
> I don't know whose P/Ns those are (maybe Van's), but from the Parker
> Cleveland Parts List, I show the Cone Bearing as Cleveland P/N
> 214-00400 and the Race (Cup) as Cleveland P/N 214-00300.
> -GV
> In a message dated 11/3/2010 7:08:03 P.M. Pacific Daylight Time,
> ceengland@bellsouth.net writes:
>
> Hi,
>
> Can anyone refresh my memory on part numbers of the 2seat RV
> Cleveland wheel bearings?
>
> I think they are:
>
> 8125-20629 (cone)
> 8231-20629 (race)
>
> But I can't find a reference anywhere.
>
> Thanks,
>
> Charlie
>
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