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<DIV>Jon,</DIV>
<DIV>I first saw a built in pump overheat on a Webra 145 in Lubbock (3000ft) on
a 104 degree day. After that I convinced the Mintor folks to install a
nylon isolator/insulator. They eventually got it done right (their first
attempt leaked) and sent me test results of the engine running in 160 degree
ambient. My concern with the perrys is that they seem to work for a while,
then need adjustment. now I know there are probably a lot that have found
them rock solid, but my observations are otherwise. I know several that
have had much better luck placing the tank on the firewall and eliminating the
pump for the 160. in my observations, if I were to use a 160, this is what
I'd do. The 160 was not really designed for a pump and has a small venturi
with a lot of suction and doesn't need a pump. Engines designed with a
pump in mind might not be able to get away without one.</DIV>
<DIV>--Lance</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=JonLowe@aol.com href="mailto:JonLowe@aol.com">JonLowe@aol.com</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-discussion@lists.nsrca.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, November 04, 2006 11:49
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] o.s. 1.60
backplate fuel pump ?</DIV>
<DIV><BR></DIV>
<DIV>
<DIV>
<DIV>In a message dated 11/4/2006 1:01:33 AM Central Standard Time, <A
href="mailto:toneuf@sbcglobal.net">toneuf@sbcglobal.net</A> writes:</DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid">
<DIV><FONT face=Arial>Guys,</FONT></DIV>
<DIV><FONT face=Arial>
OK, I got into this discussion late... </FONT></DIV>
<DIV><FONT face=Arial> I am trying to
locate a backplate</FONT></DIV>
<DIV><FONT face=Arial> fuel pump
unit for <U>my O.S. 1.60 FX engine.</U></FONT></DIV>
<DIV><FONT face=Arial> I read the
infomation by Tom Koenig from last year, but still need the</FONT></DIV>
<DIV><FONT face=Arial> unit contact
information.</FONT></DIV>
<DIV><FONT face=Arial> Does this unit
acutally exist ?</FONT></DIV>
<DIV><FONT face=Arial> Maybe someone out
there has a unit to sell?</FONT></DIV>
<DIV><FONT face=Arial> If not, can
you give me the forward to this unit ?</FONT></DIV>
<DIV><FONT face=Arial>
Austrialia? Sheesh....</FONT></DIV>
<DIV><FONT face=Arial>
Regards, Robert Hixson San
Francisco</FONT></DIV></BLOCKQUOTE></DIV>
<DIV>When I first heard about people doing this, I thought it was really
neat. Now, after thinking about it, I can't recommend doing
this. Many engines with backplate pumps have problems with the pumps
overheating, and vaporlocking or deteriorating. I've seen this on Webras
and Mintors, and watched the owners go to external Perry pumps. Having
the pump separate keeps its temp closer to ambient. Plus, you can go to
almost any hobby shop in the country, and buy a Perry pump off the rack for
$30, and not worry about having a hard to find spare in an emergency.
You can change it out without removing the engine if you suspect a
problem. Todays widebody pattern ships have plenty of room in the nose,
so mounting it is not an issue. In addition, a separately mounted pump
makes it much easier to adjust pressure as you are setting it up, and it isn't
subjected to all of the vibration of the engine.</DIV>
<DIV> </DIV>
<DIV>Just my opinion.</DIV></DIV>
<DIV> </DIV>
<DIV><FONT size=2 PTSIZE="10">Jon Lowe<BR></FONT></DIV>
<P>
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