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<DIV><FONT face=Arial size=2>Brian</FONT></DIV>
<DIV><FONT face=Arial size=2> No don't use the bottle cap. I am using a
old tettra tank cap. Cut off the bottle cap threads and push the
tettra cap onto the lip.Then assemble as normal. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Jim Ivey</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=brian_w_young@yahoo.com href="mailto:brian_w_young@yahoo.com">brian
young</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, February 16, 2006 11:23
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] SODA
BOTTLE FUEL TANK</DIV>
<DIV><BR></DIV>
<DIV>Sorry Im late into this thread but I gather the bottle cap is being used.
And further I guess the threads arent shrinking so the seal is
maintained?</DIV>
<DIV> </DIV>
<DIV>I might try and cook one up in a 215 oven immersed and filled w/
water.<BR><BR><B><I><A
href="mailto:Rcmaster199@aol.com">Rcmaster199@aol.com</A></I></B> wrote:</DIV>
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<DIV>
<DIV>Stress relief is a time-temp-chemistry sort of thing. Given the chance,
PET will try to return to near it's original shape which was a thin walled,
sealed at the far end, cylinder of plastic. If you weren't careful with the
oven, you could potentially bring the thing all the way back. </DIV>
<DIV> </DIV>
<DIV>What Jim is doing is a more controlled shrink down. Working with
the oven will work but takes more care.</DIV>
<DIV> </DIV!>
<DIV> It may make some sense to fill the bottle halfway
with water, make sure the cap has a hole drilled in it and then
stick it in a pot of boiling water and cover but making sure the bottle
doesn't tip over. You want the internal pressure build up to be
eliminated but you also want thread protection. Boil it for some time and
then see how it shrinks. It will stress relieve and become stable quicker
probably. Haven't done that myself but could be worth a try. GL</DIV>
<DIV> </DIV>
<DIV>Matt</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>In a message dated 2/16/2006 9:54:37 PM Eastern Standard Time,
brian_w_young@yahoo.com writes:</DIV>
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<DIV>Could you warm that material in an oven to acheive the same
result?</DIV>
<DIV> </DIV><!
DIV>Maybe fill it w/ something to hold the shape but let it
shrink.<BR><BR><B><I>Rcmaster199@aol.com</I></B> wrote:</BLOCKQUOTE></DIV>
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<DIV>
<DIV>Jimmy, pretty much all of those pop blow molded bottles are made of
PET. A fine, very tough and resilient engineered plastic with
terrific memory built in (beats heck out of my memory, fer shure). What
you experienced is completely expected.</DIV>
<DIV> </DIV>
<DIV>Matt</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>In a message dated 2/16/2006 5:16:58 PM Eastern Standard Time,
jivey61@bellsouth.net writes:</DIV>
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<DIV>Wayne</DIV>
<DIV> I just flew the coke bo! ttle tank today and I get 15 minutes
on 24 oz of fuel.It actually draws fuel down to 1 oz in the tank,doing
the Masters pattern.</DIV>
<DIV>The upside is I don't have to fill it full to complete the pattern.
The weight savings is 2.5 oz using this tank.</DIV>
<DIV> To review...... this was a 33 oz, 1 liter coke bottle' that I
pickled with 30 % heli for 2 months.</DIV>
<DIV> </DIV>
<DIV>Jim
Ivey</DIV></FONT></BLOCKQUOTE></DIV></FONT></BLOCKQUOTE></FONT></DIV></BLOCKQUOTE>
<DIV></DIV>
<DIV></DIV>
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