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<DIV><FONT size=2>Nat,</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Your right about the 2 columns of fluid when going
vertical using </FONT><FONT size=2>a hopper tank</FONT></DIV>
<DIV><FONT size=2>which should reduce the pressure at the
carburetor.</FONT></DIV>
<DIV><FONT size=2>But don't forget about the pressure supporting the 2
columns either from </FONT></DIV>
<DIV><FONT size=2>crankcase </FONT><FONT size=2>or pip</FONT><FONT size=2>e
pressure. This is what makes it a more constant pressure</FONT></DIV>
<DIV><FONT size=2>at the </FONT><FONT size=2>carburetor, whether the plane is in
a horizontal or vertical attitude. "G"</FONT></DIV>
<DIV><FONT size=2>forces also increase when going vertical and the pressure in
the main tank</FONT></DIV>
<DIV><FONT size=2>will support these as well. It works very well. I would not
run any setup in a</FONT></DIV>
<DIV><FONT size=2>pattern ship without a hopper tank.</FONT></DIV>
<DIV><FONT size=2>Setting up a hopper tank is not as complicated as it sounds.
It is not a cure </FONT></DIV>
<DIV><FONT size=2>for fuel foaming. This has to be done by isolating both tanks
from </FONT><FONT size=2>engine</FONT></DIV>
<DIV><FONT size=2>vibration. </FONT></DIV>
<DIV><FONT size=2>No Voodoo involved here !!!</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Karl G. Mueller<BR><A
href="mailto:kgamueller@rogers.com">kgamueller@rogers.com</A><BR></FONT></DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=natpenton@centurytel.net href="mailto:natpenton@centurytel.net">Nat
Penton</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, August 13, 2004 11:14
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Hopper Tank</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>OK guys I've heard all the arguments and i'm not
buying it.</FONT></DIV>
<DIV><FONT face=Arial size=2>All of the supportive arguments are subjective or
have alternate explanations. Even if there is a vapor head in the hopper the
instant you go vertical the pressure at the carb is reduced by
the <U>total</U> column height of the fluid. Up versus down is two
column heights variation in pressure. Further the use of a hopper is a
complex way to solve a foaming problem.</FONT></DIV>
<DIV><FONT face=Arial size=2>( Bob ) thats my story and i'm sticking to
it.</FONT></DIV></BLOCKQUOTE></BODY></HTML>