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<DIV><FONT face=Arial size=2>I posted a pic of the set up somewhere. The big
thing to keep in mind is that a hopper tank and a header tank are not the same
thing. A header tank is used to keep the fuel pick up closer to the carb/needle,
while the hopper tank is used primarily for removing unwanted air bubbles in a
high vibration environment. usually, people call them ALL header tanks, and I'm
guilty as charged. Hopper tanks have been used in helicopters and ducted fans
(remember those?) for years.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Basically you want a 2 ounce tank (or 4+ if you
need nose weight but don't want it to be permanent, as in you can drain it for
the weight check LOL...I know I know, "evil"....). One line you set up like a
standard fuel tank vent tube. This runs straight to the pick up of your main
tank; and yes use the foam clunk that YS makes in the main tank. The other is
the more important, this is a solid piece of brass/aluminum tubing that has it's
end pick up geometric center of the 2 ounce tank. This leads to the engine. The
way it works is, as the fuel flows into the hopper tank, any air bubbles travel
to the outside of the tank, and the pickup always draws pure fuel. Since even a
pinhead size air bubble can cause the DZ to caugh or sag (or worse), it's just
extra insurance.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I could tell a difference, some can't, some need
it, some don't. if weight ins't an issue, it's definitely a good insurance
policy against that dreaded caugh under high G manuevers toward the end of the
flight. The old masters and FAI patterns had quite a few of these and it was
more pronounced than now, but I still enjoy the confidence in KNOWING that if my
engine caughs, I'm down to about 1 ounce of fuel and I have been up WAY too long
=)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I know what you're building, and I know it'll be
light. Don't overthink it with that engineer noggin. Install one and call it a
day. One less thing to worry about. or one more, depending on how you look at
it....</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>-Mike</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=jpavlick@idseng.com href="mailto:jpavlick@idseng.com">John
Pavlick</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">General pattern discussion</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, March 15, 2009 12:27
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Hopper
tanks</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>OK, there's a lot of stuff there. Any specific
area that I should be looking at?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>John Pavlick<BR><A
href="http://www.idseng.com">http://www.idseng.com</A></FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=completemarine02@sprintpcs.com
href="mailto:completemarine02@sprintpcs.com">Rusty Fried</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">'General pattern
discussion'</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, March 14, 2009 9:57
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Hopper
tanks</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Go
to sunvalleyfliers.com.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'"> <A
href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A>
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <B>On Behalf Of </B>John
Pavlick<BR><B>Sent:</B> Saturday, March 14, 2009 6:02 PM<BR><B>To:</B> NSRCA
Discussion<BR><B>Subject:</B> [NSRCA-discussion] Hopper
tanks<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">I'm about to
install a hopper tank for the first time. If anybody has any advice /
pictures, please pass it along. TIA</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">John
Pavlick<BR><A
href="http://www.idseng.com">http://www.idseng.com</A></SPAN><o:p></o:p></P></DIV></DIV>
<P>
<HR>
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