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<DIV>Mike</DIV>
<DIV>I have been running the 140RX pump, also the Hanno pump, with no
adjustments, on the 91FX for several years. You need to screw in the carb
idle adjust several rounds. No problems.</DIV>
<DIV> </DIV>
<DIV>What about the pump and carb that comes on the new OS 91SZ heli. I wouldn't
hesitate to run it on the 160. The pump is mounted on the backplate, not in it.
Review SEPT/Oct 3-D
Flyer.
Nat</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=kerlock@comcast.net href="mailto:kerlock@comcast.net">Mike Hester</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 Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, November 04, 2006 6:25
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] o.s. 1.60
backplate fuel pump ?</DIV>
<DIV><BR></DIV>
<DIV>FWIW, the carb on the OS160 is the exact same carburator on the .91
FX.</DIV>
<DIV> </DIV>
<DIV>-Mike</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=patterndude@comcast.net href="mailto:patterndude@comcast.net">Lance
Van Nostrand</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 Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, November 04, 2006 7:07
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] o.s.
1.60 backplate fuel pump ?</DIV>
<DIV><BR></DIV>
<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>
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