[NSRCA-discussion] SODA BOTTLE FUEL TANK

[dwaynenancy]

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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>
>     Wow Jim
>
>     That's almost a pound of fuel the airplane must be a light weight.
>
>     Buddy
>
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