[NSRCA-discussion] SODA BOTTLE FUEL TANK

[jivey61 at bellsouth.net]

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 
  To: NSRCA Mailing List 
  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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