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Date: Sat, 16 Apr 2005 19:09:05 -0700 (Pacific Standard Time)
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From: "Echo Lake Fishing Resort (Georges Boucher)" <echolakeresort@telus.net>
References: <list-880600@logan.com>
To: <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: New rotors, New housings
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Correction, the readings were 2.017 to 2.026mm=0D
Georges  =0D
 =0D
-------Original Message-------=0D
 =0D
From: Rotary motors in aircraft=0D
Date: 04/16/05 19:05:31=0D
To: Rotary motors in aircraft=0D
Subject: [FlyRotary] Re: New rotors, New housings=0D
 =0D
 Hi! Ken=0D
Do you you cut on a taper, where does your taper start? or do you just sk=
im
0.015" off each side for a total of 0.030". I just measured the two rotor=
s
that were in a "GOOD" running 92 13b NA & got a reading of 0.017 to 0.026=
mm,
I guess they are toast.=0D
 =0D
 Georges Boucher=0D
-------Original Message-------=0D
 =0D
From: Rotary motors in aircraft=0D
Date: 04/16/05 18:54:27=0D
To: Rotary motors in aircraft=0D
Subject: [FlyRotary] Re: New rotors, New housings=0D
 =0D
   That's off each side, Rob at Pineapple racing takes 20 thousandths off
each side but I figured the 15 should do it.=0D
    Ken=0D
=0D
=0D
=0D
=0D
=0D
=0D
=0D
=0D
 =0D
Ken,=0D
Is that all off the one side - that much off each side - or half off each
side !?=0D
George ( down under)=0D
 =0D
I wouldn't think about putting an engine together without shaving the rot=
ors
 I cut 15 thousandths of an inch at the tip and tapper it off to zero whe=
re
the blueing is.=0D
=0D
  I have thought about running a RX-8 engine but I don't think the high
compression would work well with the 100 hp increase of nitrous I require=
 to
lift a heavy load out of the water.=0D
  Ken=0D
=0D
=0D
=0D
=0D
=0D
=0D
Ed,=0D
=0D
Ken's comments reminds me to say that I remeasured the width of the RX8
rotor for a more accurate measurement and it appears after a number of
measurements that the RX8 rotor are only slightly wider, this being .04mm=
 in
the gear area and only .02mm at the apex.=0D
=0D
 =0D
=0D
This I believe won't be a problem at the RPM and power settings we genera=
lly
use. However it would represent a small problem in Ken's application as h=
e
uses NOS at take-off and at that high power the E-shaft does flex a littl=
e -
this causes the rotors to skew slightly, binding at the apex areas. Ken
already has this problem with the RX7 rotors and skims them to eliminate
this problem. This is a remedy that many in the racing game use as well.=0D
=0D
 =0D
=0D
 I don't believe there's a problem with the single rotor application and =
won
t be skimming the rotor. =0D
=0D
 =0D
=0D
Hope that helps!=0D
=0D
George ( down under)=0D
=0D
  I would look into getting 85-85 GSELE rotors with the 3 mm seals, you
would also need the weights to match them, then machine out your rotors f=
or
a spare engine, you may need one to bale you out in the future, if you ke=
ep
this up you may knock me off the seat as president of the dead stick club=
=2E=0D
=0D
  I am now running rotors machined out to 3 mm seals and at about 400 hrs=
 on
them I can tell by checking through the exhaust port that the seal groove=
s
are getting V'ed out and getting sloppy so I am now putting another engin=
e
together, on this one the rotors are in prime shape so I think I will run
Tracy's 2mm seals.=0D
=0D
 Also I think that the groves may be hardened and by machining the groves
out makes them softer as they shouldn't have worn out in only 400 hrs.=0D
=0D
  Ken=0D
=0D
=0D
=0D
=0D
=0D
=0D
=0D
Well, the decision has been made.  Thanks in part to the wife's continued
interest in my warm body on  cold winter nights, the decision has been ma=
de
to purchase new rotors and rotor housings.  $$ but apparently I am worth =
it
{:>)=0D
=0D
=0D
 =0D
=0D
I looked into milling out the slots to 3mm and that would have been the
cheaper approach - but cheap approach is probably partly responsible for =
me
being in this situation - so going to try a different approach this time.=
=20
Besides leery of using a rotor which clearly has been subjected to
sufficient loads to scrape metal off its surface and peen over apex slot.=
=0D
=0D
=0D
 =0D
=0D
In the process of getting quotes.=0D
=0D
=0D
 =0D
=0D
Ed=0D
=0D
=0D
 =0D
=0D
Ed Anderson=0D
Rv-6A N494BW Rotary Powered=0D
Matthews, NC=0D
eanderson@carolina.rr.com=0D
=0D
=0D
=0D
=0D
=0D
=0D
>>  Homepage:  http://www.flyrotary.com/=0D
>>  Archive:   http://lancaironline.net/lists/flyrotary/List.html=0D
=0D
=0D
 =0D
=0D
=0D
=0D
=20
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AMILY: Arial" width=3D"100%">
<DIV>Correction, the readings were 2.017 to 2.026mm</DIV>
<DIV>Georges &nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV id=3DIncrediOriginalMessage><I>-------Original Message-------</I></D=
IV>
<DIV>&nbsp;</DIV>
<DIV id=3Dreceivestrings>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>From:</B></I> <A href=3D"m=
ailto:flyrotary@lancaironline.net">Rotary motors in aircraft</A></DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>Date:</B></I> 04/16/05 19:=
05:31</DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>To:</B></I> <A href=3D"mai=
lto:flyrotary@lancaironline.net">Rotary motors in aircraft</A></DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>Subject:</B></I> [FlyRotar=
y] Re: New rotors, New housings</DIV></DIV>
<DIV>&nbsp;</DIV>
<TABLE id=3Dmod_EDIMAINTABLE cellSpacing=3D0 cellPadding=3D2 width=3D"100=
%" border=3D0>
<TBODY>
<TR>
<TD id=3Dmod_EDITEXTREGION style=3D"FONT-SIZE: 12pt; CURSOR: auto; FONT-F=
AMILY: Arial" width=3D"100%">
<DIV>&nbsp;Hi! Ken</DIV>
<DIV>Do you you cut on a taper, where does your taper start? or do you ju=
st skim 0.015" off each side for a total of 0.030". I just measured the t=
wo rotors that were in a "GOOD" running 92 13b NA &amp; got a reading of =
0.017 to 0.026mm, I guess they are toast.</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;Georges Boucher</DIV>
<DIV id=3DIncrediOriginalMessage><I>-------Original Message-------</I></D=
IV>
<DIV>&nbsp;</DIV>
<DIV id=3Dreceivestrings>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>From:</B></I> <A href=3D"m=
ailto:flyrotary@lancaironline.net">Rotary motors in aircraft</A></DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>Date:</B></I> 04/16/05 18:=
54:27</DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>To:</B></I> <A href=3D"mai=
lto:flyrotary@lancaironline.net">Rotary motors in aircraft</A></DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>Subject:</B></I> [FlyRotar=
y] Re: New rotors, New housings</DIV></DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;&nbsp; That's off each side, Rob at Pineapple racing takes 20 =
thousandths off each side but I figured the 15 should do it.</DIV>
<DIV>&nbsp;&nbsp;&nbsp; Ken</DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
<DIV type=3D"cite" cite>&nbsp;</DIV>
<DIV type=3D"cite" cite><FONT color=3D#0000ff>Ken,</FONT></DIV>
<DIV type=3D"cite" cite><FONT color=3D#0000ff>Is that all off the one sid=
e - that much off each side - or half off each side !?</FONT></DIV>
<DIV type=3D"cite" cite><FONT color=3D#0000ff>George ( down under)</FONT>=
</DIV>
<DIV type=3D"cite" cite>&nbsp;</DIV>
<DIV type=3D"cite" cite><FONT color=3D#0000ff>I wouldn't think about putt=
ing an engine together without shaving the rotors, I cut 15 thousandths o=
f an inch at the tip and tapper it off to zero where the blueing is.</FON=
T><BR>
<DIV><FONT color=3D#0000ff>&nbsp; I have thought about running a RX-8 eng=
ine but I don't think the high compression would work well with the 100 h=
p increase of nitrous I require to lift a heavy load out of the water.</F=
ONT></DIV>
<DIV><FONT color=3D#0000ff>&nbsp; Ken</FONT></DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
<DIV><BR>
<DIV type=3D"cite" cite><FONT face=3DArial size=3D-1>Ed,</FONT><BR></DIV>=
</DIV>
<DIV>
<DIV><FONT face=3DArial size=3D-1>Ken's comments reminds me to say that I=
 remeasured the width of the RX8 rotor for a more accurate measurement an=
d it appears after a number of measurements that the RX8 rotor are only s=
lightly wider, this being .04mm in the gear area and only .02mm at the ap=
ex.</FONT><BR></DIV>
<DIV>&nbsp;<BR></DIV>
<DIV><FONT face=3DArial size=3D-1>This I believe won't be a problem at th=
e RPM and power settings we generally use. However it would represent a s=
mall problem&nbsp;in Ken's application as he uses NOS at take-off and at =
that high power the E-shaft does flex a little - this causes the rotors t=
o skew slightly, binding at the apex areas. Ken already has this problem =
with&nbsp;the RX7 rotors&nbsp;and skims them to eliminate this problem. T=
his is a remedy that many in the racing game use as well.</FONT><BR></DIV=
>
<DIV>&nbsp;<BR></DIV>
<DIV><FONT face=3DArial size=3D-1>&nbsp;I don't believe there's a problem=
 with the single rotor application and won't be skimming the rotor.&nbsp;=
</FONT><BR></DIV>
<DIV>&nbsp;<BR></DIV>
<DIV><FONT face=3DArial size=3D-1>Hope that helps!</FONT><BR></DIV>
<DIV><FONT face=3DArial size=3D-1>George ( down under)</FONT><BR>
<DIV>&nbsp; I would look into getting 85-85 GSELE rotors with the 3 mm se=
als, you would also need the weights to match them, then machine out your=
 rotors for a spare engine, you may need one to bale you out in the futur=
e, if you keep this up you may knock me off the seat as president of the =
dead stick club.<BR></DIV>
<DIV>&nbsp; I am now running rotors machined out to 3 mm seals and at abo=
ut 400 hrs on them I can tell by checking through the exhaust port that t=
he seal grooves are getting V'ed out and getting sloppy so I am now putti=
ng another engine together, on this one the rotors are in prime shape so =
I think I will run Tracy's 2mm seals.<BR></DIV>
<DIV>&nbsp;Also I think that the groves may be hardened and by machining =
the groves out makes them softer as they shouldn't have worn out in only =
400 hrs.<BR></DIV>
<DIV>&nbsp; Ken<BR></DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
<DIV><BR>
<DIV type=3D"cite" cite><FONT face=3DArial size=3D-1>Well, the decision h=
as been made.&nbsp; Thanks in part to the wife's continued interest in my=
 warm body on&nbsp; cold winter nights, the decision has been made to pur=
chase new rotors and rotor housings.&nbsp; $$ but apparently I am worth i=
t {:&gt;)</FONT><BR></DIV></DIV></DIV></DIV>
<DIV>
<DIV>
<DIV>
<DIV><BR>&nbsp;<BR></DIV>
<DIV><FONT face=3DArial size=3D-1>I looked into milling out the slots to =
3mm and that would have been the cheaper approach - but cheap approach is=
 probably partly responsible for me being in this situation - so going to=
 try a different approach this time.&nbsp; Besides leery of using a rotor=
 which clearly has been subjected to sufficient loads to scrape metal off=
 its surface and peen over apex slot.</FONT><BR></DIV>
<DIV><BR>&nbsp;<BR></DIV>
<DIV><FONT face=3DArial size=3D-1>In the process of getting quotes.</FONT=
><BR></DIV>
<DIV><BR>&nbsp;<BR></DIV>
<DIV><FONT face=3DArial size=3D-1>Ed</FONT><BR></DIV>
<DIV><BR>&nbsp;<BR></DIV>
<DIV><FONT face=3DArial size=3D-1>Ed Anderson<BR>Rv-6A N494BW Rotary Powe=
red<BR>Matthews, NC<BR></FONT><A href=3D"mailto:eanderson@carolina.rr.com=
"><FONT face=3DArial size=3D-1>eanderson@carolina.rr.com</FONT></A><BR></=
DIV></DIV></DIV></DIV>
<DIV><BR></DIV>
<DIV>
<HR>
</DIV>
<DIV>&gt;&gt;&nbsp; Homepage:&nbsp; http://www.flyrotary.com/<BR>&gt;&gt;=
&nbsp; Archive:&nbsp;&nbsp; http://lancaironline.net/lists/flyrotary/List=
=2Ehtml</DIV></DIV>
<DIV><BR></DIV>
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