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Old Aug 02, 2006, 06:11 PM
Boo
Guest
n/a Posts
(Glow) Fuel tank for confined space question ?

Hi Chaps,

Basically my problem is I only have a space 1 3/4 inches (4.5cm) tall to put my
glow fuel tank in. Said tank needs to be around 12oz (350cc) or ideally a
little bigger. I've got DuBro and Sullivan tanks to hand and they both measure
about 2 1/8 (5.5cm) inches high which is too tall.

So my question is : what have other people done when they can't fit a tank in
the space provided ? Or alternatively, who makes a tank that is quite thin top
to bottom ? There will be enough space width and length ways for any reasonable
solution, it's only the height that's a problem.

Thanks in advance,

--
Boo
Old Aug 02, 2006, 08:11 PM
Ray Haddad
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?

On Wed, 02 Aug 2006 22:18:29 +0100, I said, "Pick a card, any card"
and Boo <reply_to_group_not_me@spam_me_no_spam.net> instead replied:

>Hi Chaps,
>
>Basically my problem is I only have a space 1 3/4 inches (4.5cm) tall to put my
>glow fuel tank in. Said tank needs to be around 12oz (350cc) or ideally a
>little bigger. I've got DuBro and Sullivan tanks to hand and they both measure
>about 2 1/8 (5.5cm) inches high which is too tall.
>
>So my question is : what have other people done when they can't fit a tank in
>the space provided ? Or alternatively, who makes a tank that is quite thin top
>to bottom ? There will be enough space width and length ways for any reasonable
>solution, it's only the height that's a problem.
>
>Thanks in advance,


Once upon a time, I had a Mooney Chaparral with a .60 on it which
gobbled fuel like crazy. I wanted to add fuel tanks but the inside
was just so pretty I didn't want to add an extra fuel tank in the
fuselage. I added two capped and sealed PVC tubes in each of the
left and right wings with two brass tubes entering into the sealed
"tanks." The tanks were added in front of and behind the main spar
in a new wing I built just for the extra fuel.

Being a low wing plane, it was a closed system that delivered fuel
to the main tank using a small electric pump and battery based on a
float level in the main tank. When I used the wing, flying time went
from 15 minutes to 40 minutes. Since they were at or near CG, the
fuel used and depleted didn't affect the plane's stability.

I lost that bird to a receiver failure near Pt Mugu when I was
flying there at the base R/C club field. The plane flew out to sea.
Probably for 40 minutes or so until I couldn't see it any more.

Does your wing lend itself to being reproduced and modified?
--
Ray
Old Aug 02, 2006, 08:11 PM
Boo
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?


> Does your wing lend itself to being reproduced and modified?


Not by a lazy b*st*rd like me :-)

Seriously though, that's a very ingenious solution but it's an acrobatic ARTF
and I don't want to take a balsa knife to the wings. The only simple solution
is a long wide but thin fuel tank if anyone knows who might make such a thing ?

Thanks for the idea,

--
Boo
Old Aug 02, 2006, 10:11 PM
Jarhead
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?


"Boo" <reply_to_group_not_me@spam_me_no_spam.net> wrote in message
news:FKWdncK-CNk4i0zZnZ2dnUVZ_vmdnZ2d@biscit.net...
| Hi Chaps,
|
| Basically my problem is I only have a space 1 3/4 inches (4.5cm) tall
to put my
| glow fuel tank in. Said tank needs to be around 12oz (350cc) or
ideally a
| little bigger. I've got DuBro and Sullivan tanks to hand and they
both measure
| about 2 1/8 (5.5cm) inches high which is too tall.
|
| So my question is : what have other people done when they can't fit a
tank in
| the space provided ? Or alternatively, who makes a tank that is
quite thin top
| to bottom ? There will be enough space width and length ways for any
reasonable
| solution, it's only the height that's a problem.
|
| Thanks in advance,
|
| --
| Boo

I used two smaller tanks in tandem with good results in a plans built
flying wing that had a long nose moment. First tank pick up to a
Perry/Varsane pump (one with red plastic) and then to the needle valve.
Second pickup to the vent on the first tank and the vent on the second
tank to muffler pressure tap. Varsane says not to use muffler pressure
but in this case it helped. I was able to move both tanks aft in the
compartment closer to the CG point using the pressure pump. I think the
literature says it will pull fuel 10 inches or so.

I have a sullivan flex tank that is long, tall and narrow. It could be
mounted on its side with the vent tube turned 90. In fact, I have used
it this way.

--
Jarhead






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Old Aug 02, 2006, 10:11 PM
Geoff Sanders
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?

Try a ducted fan saddle tank such as the Sullivan #380.

Boo wrote:

> Hi Chaps,
>
> Basically my problem is I only have a space 1 3/4 inches (4.5cm) tall
> to put my glow fuel tank in. Said tank needs to be around 12oz
> (350cc) or ideally a little bigger. I've got DuBro and Sullivan tanks
> to hand and they both measure about 2 1/8 (5.5cm) inches high which is
> too tall.
>
> So my question is : what have other people done when they can't fit a
> tank in the space provided ? Or alternatively, who makes a tank that
> is quite thin top to bottom ? There will be enough space width and
> length ways for any reasonable solution, it's only the height that's
> a problem.
>
> Thanks in advance,
>


Old Aug 03, 2006, 08:11 AM
Lyman Slack
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?

Sullivan has one that might work -
Size: 8oz (240mL)
Height: 2-3/4" (70mm)
Width: 1-1/2" (38mm)
Length: 5-11/32" (136mm)
Photo at Tower Hobbies site -
http://www2.towerhobbies.com/cgi-bin...?&I=LXFU57&P=7

Cheers -- \_________Lyman Slack________/
\_______Flying Gators R/C___/
\_____AMA 6430 LM____ /
\___Gainesville FL_____/
Visit my Web Site at www.LymanSlack.com
"Boo" <reply_to_group_not_me@spam_me_no_spam.net> wrote in message
news:FKWdncK-CNk4i0zZnZ2dnUVZ_vmdnZ2d@biscit.net...
> Hi Chaps,
>
> Basically my problem is I only have a space 1 3/4 inches (4.5cm) tall to
> put my glow fuel tank in. Said tank needs to be around 12oz (350cc) or
> ideally a little bigger. I've got DuBro and Sullivan tanks to hand and
> they both measure about 2 1/8 (5.5cm) inches high which is too tall.
>
> So my question is : what have other people done when they can't fit a
> tank in the space provided ? Or alternatively, who makes a tank that is
> quite thin top to bottom ? There will be enough space width and length
> ways for any reasonable solution, it's only the height that's a problem.
>
> Thanks in advance,
>
> --
> Boo



Old Aug 03, 2006, 08:11 AM
funfly3
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?

Lyman Slack wrote:
> Sullivan has one that might work -
> Size: 8oz (240mL)
> Height: 2-3/4" (70mm)
> Width: 1-1/2" (38mm)
> Length: 5-11/32" (136mm)
> Photo at Tower Hobbies site -
> http://www2.towerhobbies.com/cgi-bin...?&I=LXFU57&P=7
>
> Cheers -- \_________Lyman Slack________/
> \_______Flying Gators R/C___/
> \_____AMA 6430 LM____ /
> \___Gainesville FL_____/
> Visit my Web Site at www.LymanSlack.com
> "Boo" <reply_to_group_not_me@spam_me_no_spam.net> wrote in message
> news:FKWdncK-CNk4i0zZnZ2dnUVZ_vmdnZ2d@biscit.net...
>> Hi Chaps,
>>
>> Basically my problem is I only have a space 1 3/4 inches (4.5cm) tall to
>> put my glow fuel tank in. Said tank needs to be around 12oz (350cc) or
>> ideally a little bigger. I've got DuBro and Sullivan tanks to hand and
>> they both measure about 2 1/8 (5.5cm) inches high which is too tall.
>>
>> So my question is : what have other people done when they can't fit a
>> tank in the space provided ? Or alternatively, who makes a tank that is
>> quite thin top to bottom ? There will be enough space width and length
>> ways for any reasonable solution, it's only the height that's a problem.
>>
>> Thanks in advance,
>>
>> --
>> Boo

>
>

just curious what model is it? and what power plant
Old Aug 03, 2006, 12:11 PM
Geoff Sanders
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?



Ray Haddad wrote:

I lost that bird to a receiver failure near Pt Mugu when I was
flying there at the base R/C club field. The plane flew out to sea.
Probably for 40 minutes or so until I couldn't see it any more.

Since Mugu is the headquarters for the Navy's Pacific Missle Range, are you sure they didn't shoot it down just for practice? :-P


Old Aug 03, 2006, 06:11 PM
Ray Haddad
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?

On Thu, 03 Aug 2006 07:06:45 -0700, I said, "Pick a card, any card"
and Geoff Sanders <geoffs@hevanet.com> instead replied:

>Ray Haddad wrote:
>
>>I lost that bird to a receiver failure near Pt Mugu when I was
>>flying there at the base R/C club field. The plane flew out to sea.
>>Probably for 40 minutes or so until I couldn't see it any more.

>
>Since Mugu is the headquarters for the Navy's Pacific Missle Range, are you sure they didn't shoot it down just for practice? :-P


Now that you mention it, there were some suspicious black choppers
hanging around!

We actually flew on the base at the south gate where the motocross
area is. We had a phone there in a waterproof box so we could inform
the tower that we were there flying. They would say "yes" or "no"
based on the flight schedule. The runway there was not used as much
as other bases so that allowed us plenty of time to fly.

Only once in the 3 years I was there did we ever get a call from the
tower with a problem. An F-4 on fire declared an emergency and the
tower called us. Within a minute of the call, all of our birds were
on the ground. The Air Force F-4 came in displaying every sign of a
serious engine fire which was safely extinguished by the base fire
crew.
--
Ray
Old Aug 04, 2006, 04:11 AM
Boo
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?

Geoff Sanders wrote:
> Try a ducted fan saddle tank such as the Sullivan #380.
>

Interesting suggestion, I see from their website they also make a boat tank
that's very thin top to bottom, I may try that in preference as it looks like a
better fit for my plane than the saddle tanks.

Thanks

--
Boo
Old Aug 04, 2006, 04:11 AM
Boo
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?

Lyman Slack wrote:
> Sullivan has one that might work -
> Size: 8oz (240mL)
> Height: 2-3/4" (70mm)
> Width: 1-1/2" (38mm)
> Length: 5-11/32" (136mm)
> Photo at Tower Hobbies site -
> http://www2.towerhobbies.com/cgi-bin...?&I=LXFU57&P=7


Well thanks very much - the 12oz version of that is just as thin and I think it
ought to work in mp plane so long as I put it in on its side.

Thanks again,

--
Boo
Old Aug 04, 2006, 04:11 AM
Boo
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?

>>
> just curious what model is it? and what power plant


It's a H9 FuntanaS 40 and the engine is a YS63. Basically the provided tank is
slightly too long to fit behind the firewall and if I bore out the hole in the
firewall so as to allow the tank neck and tubes to go through then it will start
to look very cramped behind the engine. Every other tank I've tried is too big
to fit in one way or another and the supplied tank is only 11oz as well and 12 -
14 would be more comfortable with a YS63.

Cheers,

--
Boo



Old Aug 04, 2006, 08:11 AM
Morgans
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?


"Boo" <reply_to_group_not_me@spam_me_no_spam.net> wrote in message
news:evGdneCMNb_7mE7ZnZ2dnUVZ_qWdnZ2d@biscit.net.. .
> Geoff Sanders wrote:
> > Try a ducted fan saddle tank such as the Sullivan #380.
> >

> Interesting suggestion, I see from their website they also make a boat

tank
> that's very thin top to bottom, I may try that in preference as it looks

like a
> better fit for my plane than the saddle tanks.


The only problem with a tank like that, is that when you pitch down, a thin
tank will have all of the fuel slosh forward, and the pickup gets dry, and
the engine stops.

You would do better to keep the tank as tall, and short as possible, and if
a real long tank is the only solution, keep the fuel pickup towards the
middle of the tank, instead of the end.

I remember at one time, someone made a "formable" tank, that you put in the
space allotted, and then pumped hot water through, to lock the shape in. No
idea who or where.
--
Jim in NC

Old Aug 04, 2006, 06:11 PM
Mike Norton
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?

FWIW
Hayes makes a 12 oz "slimline" tank that is 2" tall, with corners cut off on
the inside. It looks something like this:

--- ----
/ \ ----
| | 1.5" 2 "
|_____| --- ----

The other two dimensions are 6-1/8 long by 2-1/4 wide.

This probably doesn't help.
-- Mike Norton

"Boo" <reply_to_group_not_me@spam_me_no_spam.net> wrote in message
news:FKWdncK-CNk4i0zZnZ2dnUVZ_vmdnZ2d@biscit.net...
> Hi Chaps,
>
> Basically my problem is I only have a space 1 3/4 inches (4.5cm) tall to
> put my glow fuel tank in. Said tank needs to be around 12oz (350cc) or
> ideally a little bigger. I've got DuBro and Sullivan tanks to hand and
> they both measure about 2 1/8 (5.5cm) inches high which is too tall.
>
> So my question is : what have other people done when they can't fit a
> tank in the space provided ? Or alternatively, who makes a tank that is
> quite thin top to bottom ? There will be enough space width and length
> ways for any reasonable solution, it's only the height that's a problem.
>
> Thanks in advance,
>
> --
> Boo



Old Aug 05, 2006, 08:11 AM
zara
Guest
n/a Posts
Re: (Glow) Fuel tank for confined space question ?


"Boo" <reply_to_group_not_me@spam_me_no_spam.net> wrote in message
news:MPGdnRgwTcwWm07ZnZ2dnUVZ_oednZ2d@biscit.net.. .
>>>

>> just curious what model is it? and what power plant

>
> It's a H9 FuntanaS 40 and the engine is a YS63. Basically the provided
> tank is slightly too long to fit behind the firewall and if I bore out the
> hole in the firewall so as to allow the tank neck and tubes to go through
> then it will start to look very cramped behind the engine. Every other
> tank I've tried is too big to fit in one way or another and the supplied
> tank is only 11oz as well and 12 - 14 would be more comfortable with a
> YS63.


H9 is a pretty good outfit. If they supplied you with a tank, then that's
the one that should work fine.


 


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