KR> Re: tubular wing tanks

[mbz...@comcast.net]

in my experience PVC is not a good male mold. Hard to separate. Cardboard 
shipping tubes on the other hand are perfect. Once Composite sets, a few minute 
soak in a bath tub, and the tube separates and peals off. 

"Forgive me if this is an ignorant idea, but has anyone considered laying up 
fiberglass tube tanks using PVC pipe as a male mold? 

Edward Spyker" 

KR> Re: tubular wing tanks

[pk.sm...@bigpond.net.au]

If you did ... the technique for getting the PVC pipe out is as follows. To 
allow the glass to release over a long run first lay a single layer of light 
glass over the PVC and let it cure. Cut through this layer and move it around 
till it is released down the full length then reposition where you started. 
This is now ready for the final layers of glass for easy removal of the pipe. 
All you need to do now is fill in the ends. 
I'm going to use this technique for CF torque tubes.

Paul.

 Edward Spyker  wrote: 

=
Forgive me if this is an ignorant idea, but has anyone considered laying up 
fiberglass tube tanks using PVC pipe as a male mold?

KR> Re: tubular wing tanks

[Edward Spyker]

Forgive me if this is an ignorant idea, but has anyone considered laying up 
fiberglass tube tanks using PVC pipe as a male mold?

Edward Spyker





Glenda McElwee wrote: Bill Clapp has developed an alum.version of his original 
PVC tanks. 
I have the same PVC tanks in my wings.   Alum tanks will affect embedded 
antennas in the wings. 

--- On Mon, 4/26/10, Ronald Wright  wrote: I want to use 
METAL irrigation tubing.
The plastic bothers me because it gets brittle in cold weather, plus the info 
you provided below on weeping.

--- On Sat, 4/24/10, smwood  wrote:
> Bill Clapp http://www.krnet.org/krs/wc/ used 4-inch PVC pipe, 2
> each joined 
> together at both ends running from the WAF to the end of
> the wing and same 
> for the other side.

> Ron wrote:--
> Does anyone remember who used irrigation tubing for wing
> tanks in their KR? 
> Anyone know the material that the irrigation tubing is or
> the size? 
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
> 


      

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KR> Re: tubular wing tanks

[Glenda McElwee]

Bill Clapp has developed an alum.version of his original PVC tanks.  I believe 
he still has the PVC tanks in his plane.  Most people have not noticed any 
smell from fuel unless the tank is full and the vent is overflowing.  

I have the same PVC tanks in my wings.   Alum tanks will affect embedded 
antennas in the wings. 

Glenda McElwee CFI

www.AwesomeTrvl.com

KI4RDQ - General Class

N51GL - in progress

Corvair powered KR2

exp_aviat...@lists.awesometrvl.com

--- On Mon, 4/26/10, Ronald Wright <ronwrig...@yahoo.com> wrote:

From: Ronald Wright <ronwrig...@yahoo.com>
Subject: Re: KR> Re: tubular wing tanks
To: "KRnet" <kr...@mylist.net>
List-Post: krnet@list.krnet.org
Date: Monday, April 26, 2010, 11:02 AM

I want to use METAL irrigation tubing.  The plastic bothers me because it gets 
brittle in cold weather, plus the info you provided below on weeping.

Sloshing is NOT an issue in a tubular tank.  The Yankees uses long tubular 
tanks and they do not have any baffles installed.

Thanks,

Ron

--- On Sat, 4/24/10, smwood <smw...@md.metrocast.net> wrote:

> From: smwood <smw...@md.metrocast.net>
> Subject: KR> Re: tubular wing tanks
> To: kr...@mylist.net
> Date: Saturday, April 24, 2010, 6:00 PM
> Bill Clapp http://www.krnet.org/krs/wc/ used 4-inch PVC pipe, 2
> each joined 
> together at both ends running from the WAF to the end of
> the wing and same 
> for the other side.  Bill had removable wing tips for
> inspection.  He had no 
> fuel gauge senders in the PVC pipes, but a 13-gallon header
> tank at the 
> instrument panel with a tube sight gauge on the
> panel.  Electric pumps on 
> each side took fuel from the PVC pipes and dumped into the
> header tank. 
> Then gravity feed to the engine.  Fuel would slowly
> weep through the PVC; 
> you could always smell gasoline fumes in the outer wing.
> One problem with using pipe for a fuel tank is sloshing
> during maneuvers and 
> turbulence. Bill put fuel cell foam in the pipes.
> I did an experiment with PVC pipe.  I filled a section
> of 1-1/2 inch PVC 
> with gasoline with both ends glued tight.  It took
> about 6 months for all 
> the gasoline to evaporate.
> I did the same experiment with a section of 4-inch vinyl
> fence post with 
> both ends glued on caps and about half full of fuel. 
> I weigh the vinyl 
> fence post tank once in a while.  All the gasoline is
> still in the vinyl 
> fence post after 4 years. I cannot say what condition the
> fuel is in since 
> the tank is sealed, but it still sloshes like fuel. I will
> bring the vinyl 
> fence post tank to the Gathering for your examination.
> 
> Sid Wood
> Tri-gear KR-2 N6242
> Mechanicsville, MD, USA
> smw...@md.metrocast.net
> --
> Does anyone remember who used irrigation tubing for wing
> tanks in their KR? 
> Anyone know the material that the irrigation tubing is or
> the size?
> 
> Thanks,
> 
> Ron
> 
> 
> 
> 
> 
> 
> 
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
> 


      

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KR> Re: tubular wing tanks

[Dj Merrill]

On 04/26/2010 11:02 AM, Ronald Wright wrote:

> Sloshing is NOT an issue in a tubular tank.  The Yankees uses long tubular 
> tanks and they do not have any baffles installed.


I'm not sure if this will make any difference with regards to "slosh",
but I believe the Yankee has a steeper wing dihedral than the KR.

KR:
http://home.hiwaay.net/~langford/kjhf1.jpg

Yankee:
http://cad-mastergraphics.com/images/Yankee/2007_1020Image0010.JPG

-Dj

-- 
Dj Merrill - N1JOV
Glastar Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/
Grumman Yankee Driver N9870L - http://deej.net/yankee/

KR> Re: tubular wing tanks

[Ronald Wright]

I want to use METAL irrigation tubing.  The plastic bothers me because it gets 
brittle in cold weather, plus the info you provided below on weeping.

Sloshing is NOT an issue in a tubular tank.  The Yankees uses long tubular 
tanks and they do not have any baffles installed.

Thanks,

Ron

--- On Sat, 4/24/10, smwood <smw...@md.metrocast.net> wrote:

> From: smwood <smw...@md.metrocast.net>
> Subject: KR> Re: tubular wing tanks
> To: kr...@mylist.net
> Date: Saturday, April 24, 2010, 6:00 PM
> Bill Clapp http://www.krnet.org/krs/wc/ used 4-inch PVC pipe, 2
> each joined 
> together at both ends running from the WAF to the end of
> the wing and same 
> for the other side.  Bill had removable wing tips for
> inspection.  He had no 
> fuel gauge senders in the PVC pipes, but a 13-gallon header
> tank at the 
> instrument panel with a tube sight gauge on the
> panel.  Electric pumps on 
> each side took fuel from the PVC pipes and dumped into the
> header tank. 
> Then gravity feed to the engine.  Fuel would slowly
> weep through the PVC; 
> you could always smell gasoline fumes in the outer wing.
> One problem with using pipe for a fuel tank is sloshing
> during maneuvers and 
> turbulence. Bill put fuel cell foam in the pipes.
> I did an experiment with PVC pipe.  I filled a section
> of 1-1/2 inch PVC 
> with gasoline with both ends glued tight.  It took
> about 6 months for all 
> the gasoline to evaporate.
> I did the same experiment with a section of 4-inch vinyl
> fence post with 
> both ends glued on caps and about half full of fuel. 
> I weigh the vinyl 
> fence post tank once in a while.  All the gasoline is
> still in the vinyl 
> fence post after 4 years. I cannot say what condition the
> fuel is in since 
> the tank is sealed, but it still sloshes like fuel. I will
> bring the vinyl 
> fence post tank to the Gathering for your examination.
> 
> Sid Wood
> Tri-gear KR-2 N6242
> Mechanicsville, MD, USA
> smw...@md.metrocast.net
> --
> Does anyone remember who used irrigation tubing for wing
> tanks in their KR? 
> Anyone know the material that the irrigation tubing is or
> the size?
> 
> Thanks,
> 
> Ron
> 
> 
> 
> 
> 
> 
> 
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
> 

KR> RE: Tubular wing tanks

[Marty Martin]

Bill

I am putting aluminum tubes, 2 - 3" & 2 - 4" tubes plus tip tanks on
my KR1.  I did not have any welding equip.  So I am having Hevlee
Aviation put it together.  They should be ready just about any time
no.  When I get in my hands.  I will take some pictures and let
everyone see the work.

Oh yes.  I am butting on some clam shell wheel covers in hopes to gain
a little speed.

Just a little note as to what is going on in the Tehachapi area.

M. Greg Martin

On 4/24/10, robert7...@aol.com  wrote:
> Ron,
>
> Bill Clapp has the PVC tubes in his wing tanks. Not sure it  was irrigation
> tubing. Pretty sure Bill just used PVC and it looked like 2  each 3 "
> tubes.
>
> Not sure I would recommend PVC, might think about using aluminum tube
> instead.
>
> Rob Schmitt
> N1852Z
>
>

KR> RE: Tubular wing tanks

[robert7...@aol.com]

Ron,

Bill Clapp has the PVC tubes in his wing tanks. Not sure it  was irrigation 
tubing. Pretty sure Bill just used PVC and it looked like 2  each 3 " 
tubes. Should be able to find pictures and details of it somewhere on  Mark 
Langford's site on one of the KR Gathering photos collections. Probably  2004 
or 
2005.

Not sure I would recommend PVC, might think about using aluminum tube  
instead.

Rob Schmitt
N1852Z

List-Post: krnet@list.krnet.org
Date: Thu, 22 Apr 2010 21:07:03 -0700 (PDT)
From: Ronald Wright  
Subject: KR> tubular wing tanks
To: KRnet  
Message-ID:  <448898.64012...@web180409.mail.gq1.yahoo.com>
Content-Type:  text/plain; charset=us-ascii

Does anyone remember who used irrigation  tubing for wing tanks in their 
KR?  Anyone know the material that the  irrigation tubing is or the  size?

Thanks,

Ron

KR> Re: tubular wing tanks

[smwood]

Bill Clapp http://www.krnet.org/krs/wc/ used 4-inch PVC pipe, 2 each joined 
together at both ends running from the WAF to the end of the wing and same 
for the other side.  Bill had removable wing tips for inspection.  He had no 
fuel gauge senders in the PVC pipes, but a 13-gallon header tank at the 
instrument panel with a tube sight gauge on the panel.  Electric pumps on 
each side took fuel from the PVC pipes and dumped into the header tank. 
Then gravity feed to the engine.  Fuel would slowly weep through the PVC; 
you could always smell gasoline fumes in the outer wing.
One problem with using pipe for a fuel tank is sloshing during maneuvers and 
turbulence. Bill put fuel cell foam in the pipes.
I did an experiment with PVC pipe.  I filled a section of 1-1/2 inch PVC 
with gasoline with both ends glued tight.  It took about 6 months for all 
the gasoline to evaporate.
I did the same experiment with a section of 4-inch vinyl fence post with 
both ends glued on caps and about half full of fuel.  I weigh the vinyl 
fence post tank once in a while.  All the gasoline is still in the vinyl 
fence post after 4 years. I cannot say what condition the fuel is in since 
the tank is sealed, but it still sloshes like fuel. I will bring the vinyl 
fence post tank to the Gathering for your examination.

Sid Wood
Tri-gear KR-2 N6242
Mechanicsville, MD, USA
smw...@md.metrocast.net
--
Does anyone remember who used irrigation tubing for wing tanks in their KR? 
Anyone know the material that the irrigation tubing is or the size?

Thanks,

Ron