[NSRCA-discussion] SODA BOTTLE FUEL TANK

[Jerry Budd]

I think you meant mass of the fluid.

>It's the density of the fluid, not the volume of the fluid. Dwayne
>
>Eddie Batchelor wrote:
>
>>  I've not made any smart comments in a while SO here goes.
>>
>>  <That's almost a pound of fuel the airplane must be a light weight.>
>>
>>  That'd be closer to a pound and a half. Last time I looked a pound was
>>  16oz (454Gm). SOOO that 33oz bottle that is now 24ozs (full) would be
>>  more like a pound and a half, down from the original 2.06pounds it
>>  started life as. Of Course if we're gonna get that serious we'd hafta
>>  talk about the specific gravity of the fuel - so I'm kinda out on a
>>  limb with this
>>
>>  But since most of us do take off with a full tank (except those
>>  electron guys) Can you feel the difference in a 2m plane changing
>>  weight well over a pound, even if it's located on the CofG. At my
>>  level of experience, especially since I've not touched the sticks
>>  since Hurricane Rita, I'm not gonna voice an opinion. You guys tell me.
>>
>>  Eddie
>>
>>  ------------------------------------------------------------------------
>>
>>  *From:* nsrca-discussion-bounces at lists.nsrca.org
>>  [mailto:nsrca-discussion-bounces at lists.nsrca.org] *On Behalf Of
>>  *jivey61 at bellsouth.net
>>  *Sent:* Thursday, February 16, 2006 4:11 PM
>>  *To:* NSRCA Mailing List
>>  *Subject:* Re: [NSRCA-discussion] SODA BOTTLE FUEL TANK
>>
>>  Buddy
>>
>>  Ya don't weigh it with full tank,besides that the 160DZ has gobs of power
>>
>>  Jim Ivey
>>
>>      ----- Original Message -----
>>
>>      *From:* BUDDYonRC at aol.com <mailto:BUDDYonRC at aol.com>
>>
>>      *To:* nsrca-discussion at lists.nsrca.org
>>      <mailto:nsrca-discussion at lists.nsrca.org>
>>
>>      *Sent:* Thursday, February 16, 2006 9:54 AM
>>
>>      *Subject:* Re: [NSRCA-discussion] SODA BOTTLE FUEL TANK
>>
>>      In a message dated 2/15/2006 8:35:48 PM Central Standard Time,
>>      jivey61 at bellsouth.net <mailto:jivey61 at bellsouth.net> writes:
>>
>>          Wayne
>>
>>          I was getting ready to update my experiment with the 33 oz
>>          coke bottle filled with fuel 30%. I let it sit and shrink for
>>          2 months,then when it appeared to stop shrinking I removed the
>>          fuel and carefully measured the volume.The bottle started life
>>          as 33 oz,1 liter and now holds 24 oz liquid. Which is perfect
>>          for a thirsty 160 DZ with a 4 blade prop.I have it in my
>>          Smaragd and will fly (test) tomorrow. Should work fine and no
>>          more shrinking.
>>
>>          Jim Ivey
>>
>>              ----- Original Message -----
>>
>>              *From:* Wayne Galligan <mailto:wgalligan at goodsonacura.com>
>>
>>              *To:* NSRCA Mailing List
>>              <mailto:nsrca-discussion at lists.nsrca.org>
>>
>>              *Sent:* Wednesday, February 15, 2006 6:21 PM
>>
>>              *Subject:* [NSRCA-discussion] SODA BOTTLE FUEL TANK
>>
>>              FYI... I had a conversation with a flying friend the other
>>              day about the
>>              soda bottle fuel tanks and the way they shrink. He happens
>>              to work for
>>              Pepsi and explained to me that the bottles are blow
>>              molded. He said if they
>>              are not used with in a certain period of time that the
>>              memory in the plastic
>>              takes over and they will shrink in size and then they have
>>              to discard the
>>              old bottles. The carbonized soda keeps the shape of the
>>              bottle till used.
>>              He said that most likely the nitro content speeds up the
>>              process and could
>>              explain why some of you using them with higher then 15%
>>              nitro are
>>              experiencing this phenomenon.
>>              So.... drink another one.... rinse and fill.
>>
>>              Wayne Galligan
>>
>> 
>>------------------------------------------------------------------------
>>
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>>
>>
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>>
>>      Wow Jim
>>
>>      That's almost a pound of fuel the airplane must be a light weight.
>>
>>      Buddy
>>
>>      ------------------------------------------------------------------------
>>
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>>      NSRCA-discussion at lists.nsrca.org
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>>
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>>
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-- 
___________
Jerry Budd
Budd Engineering
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