Hi Tracy,

My alternative is to try to jam all the return fuel thru a 1/4 inch
line.  It seems like that will cause problems also.  It's fairly
substantial surgery to get a 3/8 inch return line in.

I certainly agree that without the cooler it's a disaster waiting to
happen.  I'm relying somewhat on Todd's positive experiences
with his system, and further testing on my plane.

Bob White

On Thu, 17 Feb 2005 09:52:56 -0500
"Tracy Crook" <lors01@msn.com> wrote:

  Even with the cooler, This scares me.  I know of at least 2 cases where it has caused power failures, one resulted in fatality.  True, they didn't have the cooler but it is a bandaid covering up a problem.

  Tracy

  Hi Jim,

  Todd's system is a "quasi" returnless system.  The fuel is returned to
  the input of the fuel pump instead of the tank.  Without the cooler,
  much of the same fuel would circulate thru the fuel rail again and agin
  picking up heat.  To see Todd's diagram and description go to:

  http://www.rotarywiki.com/<http://www.rotarywiki.com/> and search for "returnless".

  Bob White


  On Wed, 16 Feb 2005 23:25:06 -0600
  Jim Sower <canarder@frontiernet.net<mailto:canarder@frontiernet.net>> wrote:

  > But I thought the purpose of the cooler was to cool the *return* fuel.
  > If it's a one-way system, how does the fuel get hot enough to need cooling?
  > What am I missing here? ... Jim S.
  >
  > Bob White wrote:
  >
  > >Todd,
  > >
  > >I'm going to build a returnless system based on your design.  I found
  > >this fuel cooler at Jeg's for about $40.  Jeg's P/N 771-1009.  The
  > >finned area is 4.5 X 5 X 7/8 (inch), which I think is a little bigger
  > >than the one you made.
  > >
  >  >http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=3532&prmenbr=361
  > >
  > >I'm sure it's nicer looking than anything I could build myself. I'll
  > >post pictures of my alternator bracket one of these days to prove it.
  > >
  > >Bob White
  > >
  > >
  > >
  >
  > >>  Homepage:  http://www.flyrotary.com/<http://www.flyrotary.com/>
  > >>  Archive: http://lancaironline.net/lists/flyrotary/List.html<http://lancaironline.net/lists/flyrotary/List.html>
  >
  >


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  N93BD - Rotary Powered BD-4 (real soon)

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