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From: WRJJRS@aol.com
Message-ID: <1f7.c33f8ba.2fea5687@aol.com>
Date: Wed, 22 Jun 2005 01:52:07 EDT
Subject: Re: [FlyRotary] Re: Single PP HP?
To: flyrotary@lancaironline.net
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In a message dated 6/21/2005 6:36:36 PM Pacific Standard Time,  
13brv3@bellsouth.net writes:

You  tend to forget some very important points Rusty, please remember I'm 
working  on aluminium end/side housings ( without ports) - so too is Richard 
Sohn.  It is much easier and cheaper to do it that way. So naturally we need a 
port  somewhere. 
 
Right you are.  I did  sort of gloss over that part.  I think I understand 
now.   You're doing the PP because it's easier, not because it's better.    
Wait, maybe that didn't come out quite right  :-)  
 
Cheers,
Rusty (stirrin' up  trouble)

Hi Rusty, 
 I guess I'll stir up some more by mentioning the Paul Lamar helped  with the 
PP engine recently that was duplicating the LeMans timing and port  sizes. PP 
sizes that is. They got 228 HP at less than 7000 RPM (13B). With  a cobbled 
up carb manifold no less. (I believe the Madzatrix guys were  helping with the 
carb) They hadn't prepared the FI and had to go with  somthing familiar. (Dyno 
time costs) That is no small potatoes right out of the  box. 114 HP per rotor 
at less than 7k which would indicate that the intake they  used could see a 
great deal of improvement. For high power you will play hell  getting the HP of 
the PP engine even with the renesis IMO. Not that you can't do  it but you 
will need a GOOD TUNED MANIFOLD and will probably need to run the  higher RPM of 
the typical Renesis 9K redline. The side ports are a compromise to  allow 
good power and low end torque. Aircraft wise I am going to be looking to  buy or 
build 3 PP housings for my 20B. Much simpler manifolding, (3 pipes  instead of 
6) and better power at typical RPMs. I would like to limit my  engine to 7000 
if I can to reduce wear if nothing else. Plus if aluminum side  and 
intermediate housings become available I could have a 40 pound weight  savings! 
Bill Jepson

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; charset=3DUS-ASCII">
<META content=3D"MSHTML 6.00.2900.2180" name=3DGENERATOR></HEAD>
<BODY id=3Drole_body style=3D"FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY:=20=
Arial"=20
bottomMargin=3D7 leftMargin=3D7 topMargin=3D7 rightMargin=3D7><FONT id=3Drol=
e_document=20
face=3DArial color=3D#000000 size=3D2>
<DIV>In a message dated 6/21/2005 6:36:36 PM Pacific Standard Time,=20
13brv3@bellsouth.net writes:</DIV>
<BLOCKQUOTE=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><=
FONT=20
  style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size=
=3D2>
  <DIV><FONT color=3D#0000ff><SPAN class=3D406042116-21062005><FONT face=3DA=
rial>You=20
  tend to forget some very important points Rusty, please remember I'm worki=
ng=20
  on aluminium end/side housings ( without&nbsp;ports) - so too is Richard S=
ohn.=20
  It is much easier and cheaper to do it that way. So naturally we need a po=
rt=20
  somewhere.<SPAN class=3D500383001-22062005><FONT=20
  color=3D#ff0000>&nbsp;</FONT></SPAN></FONT></SPAN></FONT></DIV>
  <DIV><FONT color=3D#0000ff><SPAN class=3D406042116-21062005><FONT face=3DA=
rial><SPAN=20
  class=3D500383001-22062005></SPAN></FONT></SPAN></FONT>&nbsp;</DIV>
  <DIV><FONT color=3D#0000ff><SPAN class=3D406042116-21062005><FONT face=3DA=
rial><SPAN=20
  class=3D500383001-22062005><FONT color=3D#ff0000>Right you are.&nbsp; I&nb=
sp;did=20
  sort of gloss over that part.&nbsp;&nbsp;I think I understand now.&nbsp;=20
  You're doing the PP because it's easier, not because it's better.&nbsp;&nb=
sp;=20
  Wait, maybe that didn't come out quite right=20
  &nbsp;:-)&nbsp;&nbsp;</FONT></SPAN></FONT></SPAN></FONT></DIV>
  <DIV><FONT color=3D#0000ff><SPAN class=3D406042116-21062005><FONT face=3DA=
rial=20
  color=3D#ff0000><SPAN=20
  class=3D500383001-22062005></SPAN></FONT></SPAN></FONT>&nbsp;</DIV>
  <DIV><FONT color=3D#0000ff><SPAN class=3D406042116-21062005><FONT face=3DA=
rial=20
  color=3D#ff0000><SPAN=20
  class=3D500383001-22062005>Cheers,</SPAN></FONT></SPAN></FONT></DIV>
  <DIV><FONT color=3D#0000ff><SPAN class=3D406042116-21062005><FONT face=3DA=
rial=20
  color=3D#ff0000><SPAN class=3D500383001-22062005>Rusty (stirrin' up=20
  trouble)</FONT></FONT></FONT></DIV></BLOCKQUOTE>
<DIV>Hi Rusty, </DIV>
<DIV>&nbsp;I guess I'll stir up some more by mentioning the Paul Lamar helpe=
d=20
with the PP engine recently that was duplicating the LeMans timing and port=20
sizes. PP sizes that is. They got 228 HP&nbsp;at less than 7000 RPM (13B). W=
ith=20
a cobbled up carb manifold no less. (I believe the&nbsp;Madzatrix guys were=20
helping with the carb)&nbsp;They hadn't prepared the FI and had to go with=20
somthing familiar. (Dyno time costs) That is no small potatoes right out of=20=
the=20
box. 114 HP per rotor at less than 7k which would indicate that the intake t=
hey=20
used could see a great deal of improvement. For high power you will play hel=
l=20
getting the HP of the PP engine even with the renesis IMO. Not that you can'=
t do=20
it but you will need a GOOD TUNED MANIFOLD and will probably need to run the=
=20
higher RPM of the typical Renesis 9K redline. The side ports are a compromis=
e to=20
allow good power and low end torque. Aircraft wise I am going to be looking=20=
to=20
buy or build 3 PP housings for my 20B. Much simpler manifolding, (3 pipes=20
instead of 6)&nbsp;and better power at typical RPMs. I would like to limit m=
y=20
engine to 7000 if I can to reduce wear if nothing else. Plus if aluminum sid=
e=20
and intermediate housings become available&nbsp;I could have a 40 pound weig=
ht=20
savings! </DIV>
<DIV>Bill Jepson</SPAN></SPAN></DIV></FONT></BODY></HTML>

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