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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Re: EC2 and Ed's EFISM - a great combination
Date: Fri, 31 Jul 2009 18:46:54 -0400
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Actually, George, The RWS drive was not just a redevelopment of the Ross
drive.
Tracy basically started from scratch and engineered a redrive that was
designed to meet certain objectives while achieving a reasonable cost.
There is no other redrive I am familiar with that has anywhere near the
number of flying hours that the RWS redrive has with none of the problems
associated with the Ross.
While there is a superficial similarly to the Ross (Prop on one end and
rotary on the other, planetary gears in the middle {:>)) in appearance, the
internals are considerably ahead of anything Ross had. Pressure lubrication
of the prop shaft for one thing, an integral thrust bearing for another, a
removable propeller shaft for yet another, full oil pressure lubrication.
The Ross drive required a restrictor in the oil line to (can you believe
this) reduce oil pressure - otherwise the thing leaked like crazy - even
with the restrictor, the rear seal frequently was a leaky mess. But,
reducing the oil pressure was one reason the Ross had marginal lubrication
in my opinion. Even then, the oil distribution inside the Ross was also not
well designed.
Don't get me wrong, I was glad to get a Ross - because it was the only thing
around at the time. Had old man, Lou Ross, lived longer he may have
eventually fixed a lot of these issues, but unfortunately he did not and I
won't go into the situation with his son, Chris. But, we are fortunate that
Tracy took on this challenge and did it right.
One thing I really appreciate about the RWS design is that it has a
considerably different internal set up with easily replaceable parts - which
was not the case with the Ross. If you wanted to completely disassembly a
Ross unit you most likely had to take it to a machine shop.
Just wanted to make it clear that in my opinion the RWS should not be
associated with the Ross unit which many have found shortcomings in.
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
<http://www.andersonee.com> http://www.andersonee.com
<http://www.dmack.net/mazda/index.html>
http://www.dmack.net/mazda/index.html
http://www.flyrotary.com/
<http://members.cox.net/rogersda/rotary/configs.htm>
http://members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.rotaryaviation.com/Rotorhead%20Truth.htm
<http://www.dmack.net/mazda/index.html>
_____
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of George Lendich
Sent: Friday, July 31, 2009 5:20 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: EC2 and Ed's EFISM - a great combination
Steve,
The Ross drive was redeveloped by Tracy Crook of Real World Solutions (RWS).
Tracy now uses the 6 planet planetary (Ford Unit) and is about the best you
will get weight wise and value for money.
There are other similar units - all have slightly different construction,
however Tracy's is well proven. I will probably make my own, but only
because of the tyranny of distance and associated costs.
George (down under).
Steve,
I went with the RD-1B PSRU from RWS.
T Mann
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 3267 (20080714) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
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<div class=3DSection1>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Actually, George, The RWS drive was =
not
just a redevelopment of the Ross drive. =
<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><st1:City w:st=3D"on"><st1:place w:st=3D"on"><font =
size=3D2
color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial;
color:navy'>Tracy</span></font></st1:place></st1:City><font size=3D2
color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial;
color:navy'> basically started from scratch and engineered a redrive =
that was
designed to meet certain objectives while achieving a reasonable cost. =
There
is no other redrive I am familiar with that has anywhere near the number =
of
flying hours that the RWS redrive has with none of the problems =
associated with
the Ross.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>While there is a superficial =
similarly to
the Ross (Prop on one end and rotary on the other, planetary gears in =
the
middle {:>)) in appearance, the internals are considerably ahead of =
anything
Ross had. Pressure lubrication of the prop shaft for one thing, an =
integral
thrust bearing for another, a removable propeller shaft for yet another, =
full
oil pressure lubrication. The Ross drive required a restrictor in =
the oil
line to (can you believe this) reduce oil pressure – otherwise the =
thing
leaked like crazy – even with the restrictor, the rear seal =
frequently
was a leaky mess. But, reducing the oil pressure was one reason =
the Ross
had marginal lubrication in my opinion. Even then, the oil distribution =
inside
the Ross was also not well designed. <o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Don’t get me wrong, I was =
glad to
get a Ross – because it was the only thing around at the =
time. Had
old man, Lou Ross, lived longer he may have eventually fixed a lot of =
these
issues, but unfortunately he did not and I won’t go into the =
situation
with his son, Chris. But, we are fortunate that <st1:City =
w:st=3D"on"><st1:place
w:st=3D"on">Tracy</st1:place></st1:City> took on this challenge and did =
it right.
<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>One thing I really appreciate about =
the
RWS design is that it has a considerably different internal set up with =
easily replaceable
parts – which was not the case with the Ross. If you wanted =
to completely
disassembly a Ross unit you most likely had to take it to a machine =
shop.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Just wanted to make it clear that =
in my
opinion the RWS should not be associated with the Ross unit which many =
have
found shortcomings in.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<p><font size=3D2 color=3Dnavy face=3DArial><span lang=3DEN =
style=3D'font-size:10.0pt;
font-family:Arial;color:navy'>Ed Anderson<o:p></o:p></span></font></p>
<p><font size=3D2 color=3Dnavy face=3DArial><span lang=3DEN =
style=3D'font-size:10.0pt;
font-family:Arial;color:navy'>Rv-6A N494BW Rotary =
Powered<o:p></o:p></span></font></p>
<p><font size=3D2 color=3Dnavy face=3DArial><span lang=3DEN =
style=3D'font-size:10.0pt;
font-family:Arial;color:navy'>Matthews, NC<o:p></o:p></span></font></p>
<p><font size=3D2 color=3Dnavy face=3DArial><span lang=3DEN =
style=3D'font-size:10.0pt;
font-family:Arial;color:navy'>eanderson@carolina.rr.com<o:p></o:p></span>=
</font></p>
<p><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt;font-family:
Arial;color:navy'><a href=3D"http://www.andersonee.com"><span =
lang=3DEN>http://www.andersonee.com</span></a><o:p></o:p></span></font></=
p>
<p><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt;font-family:
Arial;color:navy'><a =
href=3D"http://www.dmack.net/mazda/index.html"><span
lang=3DEN>http://www.dmack.net/mazda/index.html</span></a><o:p></o:p></sp=
an></font></p>
<p><font size=3D2 color=3Dnavy face=3DArial><span lang=3DEN =
style=3D'font-size:10.0pt;
font-family:Arial;color:navy'><a =
href=3D"http://www.flyrotary.com/">http://www.flyrotary.com/</a></span></=
font><font
size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial;
color:navy'><o:p></o:p></span></font></p>
<p><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt;font-family:
Arial;color:navy'><a =
href=3D"http://members.cox.net/rogersda/rotary/configs.htm"><span
lang=3DEN>http://members.cox.net/rogersda/rotary/configs.htm#N494BW</span=
></a><o:p></o:p></span></font></p>
<p><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt;font-family:
Arial;color:navy'><a =
href=3D"http://www.rotaryaviation.com/Rotorhead%20Truth.htm">http://www.r=
otaryaviation.com/Rotorhead%20Truth.htm</a><a
href=3D"http://www.dmack.net/mazda/index.html"></a></span></font><font =
size=3D2
face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p=
>
</div>
<div>
<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>
<hr size=3D2 width=3D"100%" align=3Dcenter tabindex=3D-1>
</span></font></div>
<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'> =
<st1:PersonName
w:st=3D"on">Rotary motors in aircraft</st1:PersonName> =
[mailto:flyrotary@lancaironline.net]
<b><span style=3D'font-weight:bold'>On Behalf Of </span></b>George =
Lendich<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Friday, July 31, =
2009 5:20
PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> <st1:PersonName =
w:st=3D"on">Rotary
motors in aircraft</st1:PersonName><br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [FlyRotary] Re: =
EC2 and
Ed's EFISM - a great combination</span></font><o:p></o:p></p>
</div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<blockquote style=3D'border:none;border-left:solid black =
1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'=
>
<div>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Steve,<o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>The Ross drive was redeveloped by Tracy Crook of Real =
World
Solutions (RWS). <st1:City w:st=3D"on"><st1:place =
w:st=3D"on">Tracy</st1:place></st1:City>
now uses the 6 planet planetary (Ford Unit) and is about the best you =
will
get weight wise and value for money.<o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>There are other similar units - all have =
slightly
different construction, however <st1:City w:st=3D"on"><st1:place =
w:st=3D"on">Tracy</st1:place></st1:City>'s
is well proven. I will probably make my own, but only because of the =
tyranny of
distance and associated costs.<o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>George (down under).<o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> <o:p></o:p></span></font></p>
</div>
<p class=3DMsoNormal><font size=3D2 color=3D"#1f497d" =
face=3DCalibri><span
style=3D'font-size:11.0pt;font-family:Calibri;color:#1F497D'>Steve,<o:p><=
/o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3D"#1f497d" =
face=3DCalibri><span
style=3D'font-size:11.0pt;font-family:Calibri;color:#1F497D'>I went with =
the
RD-1B PSRU from RWS.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3D"#1f497d" =
face=3DCalibri><span
style=3D'font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> <=
/o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3D"#1f497d" =
face=3DCalibri><span
style=3D'font-size:11.0pt;font-family:Calibri;color:#1F497D'>T =
Mann<o:p></o:p></span></font></p>
</blockquote>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><br>
<br>
__________ Information from ESET NOD32 Antivirus, version of virus =
signature
database 3267 (20080714) __________<br>
<br>
The message was checked by ESET NOD32 Antivirus.<br>
<br>
<a =
href=3D"http://www.eset.com">http://www.eset.com</a><o:p></o:p></span></f=
ont></p>
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