Dan Heath wrote:
> This got me wondering, so I went to my W&B Spread sheet to check. From
full
> to 45 min reserve, mine moves .856" aft. Header tank only, 12 gallons.
Now
> that does not jive with Marks numbers, but that is what my spread sheet
says
> from 12 to 3 gallons.
Dan, you made me dr
;Mark Langford"
To: "KRnet"
Sent: Sunday, January 07, 2007 22:31
Subject: Re: KR> header tanks
> "Keeping the header tank"...yes, as long as you also have wing tanks or a
> fuselage fuel cell like Bill mentioned. Header tank ONLY, I'd vote no.
At 10:53 PM 1/7/2007, you wrote:
>the wing
>tank vents will be plumbed to enter the header tank at about the full level.
>Only the header tank will be vented to atmosphere. That way any overflow
>will be sucked down the wing tank breather to return to the wing tanks.
>I am considdering running the
You can't return down the vent tubes. There is no
place for the traped air to go.
--- Larry&Sallie Flesner wrote:
> At 10:53 PM 1/7/2007, you wrote:
> >the wing
> >tank vents will be plumbed to enter the header tank
> at about the full level.
> >Only the header tank will be vented to atmosphere.
>You can't return down the vent tubes. There is no
>place for the traped air to go.
Randy Smith
++
For more than you probably want to know about the Ercoupe
fuel system, check out:
http://www.ercoupe.net/ads/55_22_02.html
Doesn't look all that s
assembler
See: www.whisperaircraft.com
mailto: av...@telkomsa.net
- Original Message -
From: "Dan Heath"
To:
Sent: Sunday, January 07, 2007 23:16
Subject: Re: KR> header tanks
> This got me wondering, so I went to my W&B Spread sheet to check. From
full
> to 45 min r
Well, I don't think the computer knows much about the shape of my tank, and
the numbers are only calculated numbers. I did weigh it with no fuel and
with full fuel to get the calculated moment (station) of the fuel.
See N64KR at http://KRBuilder.org - Then click on the pics
See you at the 2007
Randy Smith Wrote:
> You can't return down the vent tubes. There is no
> place for the traped air to go.
I'm not quite with you, What air where?
Regards
Dene Collett
KR2SRT builder
South africa
Whisper assembler
See: www.whisperaircraft.com
mailto: av...@telkomsa.net
Larry wrote:
> Test to insure that the return to the wing tanks flow is equal to that
being
> pumped to the header tank or the difference will be pumped out the
> header tank vent. You will be pressure pumping one direction and
> gravity feed back from basically an open tank (it is vented).
Not q
At 02:22 PM 1/10/2007, AVLEC wrote:
>Therefore the fuel returning to the wing tanks
>down the wing tank vent lines is actually being sucked down and not running
>under gravity feed.
>Dene Collett
+
Dene,
As long as the return lines are not r
What would be the best way to install/fit a Summit tank??
Chris Johnston
North Richmond
NSW Australia.
- Original Message -
From: "william Clapp"
To: "KRnet"
Sent: Monday, January 08, 2007 5:14 AM
Subject: Re: KR> header tanks
> My preference on my
My preference on my Corvair KR2S is to run the header because of my gravity
feed carb - Gravity is pretty dependable - I think it is more reliable than a
fuel pump (no reported incidents of loss of gravity other than with some
assossiated UFO sightings) I have a 13 gallon header and 10 gallons
ll I know.
Thanks guys.
Regards
Dene Collett
KR2SRT builder
South africa
Whisper assembler
See: www.whisperaircraft.com
mailto: av...@telkomsa.net
- Original Message -
From: "Larry&Sallie Flesner"
To: "KRnet"
Sent: Friday, January 05, 2007 01:30
Subject: Re: KR>
Dene Collett wrote:
> Thanks Mark J, Larry F & Bill C for the info concerning header tanks. I
took
> a look at your websights and that cleared up a few things too. Bill sure
> makes a good argument for keeping the header tank.
"Keeping the header tank"...yes, as long as you also have wing tanks o
You can always build a small header, leaving room for baggage and access to
the instrument panel, and pump to the header from the wing tanks and have
the best of both.
See N64KR at http://KRBuilder.org - Then click on the pics
See you at the 2007 - KR Gathering
There is a time for building and
This got me wondering, so I went to my W&B Spread sheet to check. From full
to 45 min reserve, mine moves .856" aft. Header tank only, 12 gallons. Now
that does not jive with Marks numbers, but that is what my spread sheet says
from 12 to 3 gallons.
See N64KR at http://KRBuilder.org - Then cli
-
From: "Dan Heath"
To:
Sent: Sunday, January 07, 2007 3:16 PM
Subject: Re: KR> header tanks
> This got me wondering, so I went to my W&B Spread sheet to check. From
> full
> to 45 min reserve, mine moves .856" aft. Header tank only, 12 gallons.
> N
At 03:20 PM 1/7/2007, you wrote:
>I may be wrong here but you calculated that with your weight as the pilot.
>Try it with say a 250 lb pilot and see if that makes it move even more. Like
>Mark Jones
+
Mark,
The weight of the pilot will not m
Guys,
I guess that I'm in the mood to throw my pennies into the pot
here. I have the exact set up that is being talked about here and have no
problem with it for low pressure or CG management. I have in fact been
testing max climb angles and durations at those angles. I don't have the
in
With a 250 lb pilot, the shift is .862". I thought it was the other Mark
and he weighs less than me.
See N64KR at http://KRBuilder.org - Then click on the pics
See you at the 2007 - KR Gathering
There is a time for building and a time for FLYING and the time for Flying
has begun.
Daniel R. Heat
Hi Guys
I have been thinking long and hard about the possibility of not installing
my aluminum header tank and just sticking with the two outboard wing tanks.
I did build the tank with its CG as close to the spar as possible. It will
take about 50 litres to fill it.
I would like to hear from those
(N886MJ)
Wales, WI
My Web site: http://www.flykr2s.com/
Mailto:flyk...@wi.rr.com
-Original Message-
Behalf Of Dene Collett
Subject: KR> header tanks
Hi Guys
I have been thinking long and hard about the possibility of not
installing
my aluminum header tank and just sticking with the
>
>I have been thinking long and hard about the possibility of not installing
>my aluminum header tank and just sticking with the two outboard wing tanks.
>Dene Collett
Dene,
I have tanks in the outboard wing panels only, no header tan
Thanks Mark J and Larry F for the informative replies. I have only one
question for Larry, If I read your post correctly, you have a gap of 10"
behind the main spar and then your tank extends rearwards from there. If so
can you give me the reason for the gap. No specific reason, it just seems
stran
At 02:29 PM 1/6/2007, you wrote:
>If I read your post correctly, you have a gap of 10"
>behind the main spar and then your tank extends rearwards from there.
>Dene Collett
+++
Dene,
Check the photo
http://mysite.verizon.net/flesner/22.jpg
That
Doug Said
The KR2S, when built
without the plans located header tank, will not have much CG shift. I
forget the exact number, but mine with wing tanks shifts less than two
inches from empty fuel light pilot to full fuel with heavy passengers. I
think Mark Jones said his was closer to an inch the
Hi Phil,
The header tank is not required for balance. You can adjust the C of G =
by altering the engine mount length. This is quite easy if you are =
making your own engine mount or are up to modifying it. When changing =
engines I did exactly that and got to within 3mm of my desired result.
Y
My wing tanks are from the back of the main outter spar aft 13 inches
and 45
inches outwards. these hold 45 litures.( 11 US Gals)
+++
Hey Phil
Our gallon is like your Oz gallon, i.e. an Imperial gallon of 4.55 L.
The only thing American that is not bigger than every one else's, is
thei
My wing tanks are from the back of the main outter spar aft 13 inches
and 45
inches outwards. these hold 45 litures.( 11 US Gals)
+++
Hey Phil
Our gallon is like your Oz gallon, i.e. an Imperial gallon of 4.55 L.
The only thing American that is not bigger than every one else's, is
thei
You could always use spacers on the firewall to move the engine mount forward 1
or 2 inches and then you wouldn't have to modify the engine mount at all. A
little W&B math should get you into the ballpark for spacer thickness.
Denny
Barry Kruyssen wrote:
Hi Phil,
The header tank is not requi
I have wing tanks with an electric boost punt sending to the header tank. I
also have an VW engine pump and electric boost. It appears that each of
these pumps will allow fuel to flow through them in the case of failure.
I am wondering why I can't eliminate the vent from the header tank and rely
IF I understand what you are saying. If you remove the vent from your
header tank you will have an air chamber. You will not be able to fill
the header tank as air pressure will build and prevent fuel from
entering. The only way the air will be able to escape is through the
carburetor. You may co
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