Return-Path: Received: from [199.185.220.220] (HELO priv-edtnes56.telusplanet.net) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 880604 for flyrotary@lancaironline.net; Sat, 16 Apr 2005 22:09:58 -0400 Received-SPF: pass receiver=logan.com; client-ip=199.185.220.220; envelope-from=echolakeresort@telus.net Received: from boucher-oddle24 ([207.194.127.121]) by priv-edtnes56.telusplanet.net (InterMail vM.6.01.04.00 201-2131-118-20041027) with ESMTP id <20050417020911.ZWQA24710.priv-edtnes56.telusplanet.net@boucher-oddle24> for ; Sat, 16 Apr 2005 20:09:11 -0600 Received: from 127.0.0.1 (AVG SMTP 7.0.308 [266.9.13]); Sat, 16 Apr 2005 19:09:09 -0700 Message-Id: <4261C541.000021.02780@BOUCHER-ODDLE24> Date: Sat, 16 Apr 2005 19:09:05 -0700 (Pacific Standard Time) X-Mailer: IncrediMail (3001609) From: "Echo Lake Fishing Resort (Georges Boucher)" References: To: Subject: Re: [FlyRotary] Re: New rotors, New housings X-FID: FLAVOR00-NONE-0000-0000-000000000000 X-Priority: 3 Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=======AVGMAIL-4261C545041A=======" --=======AVGMAIL-4261C545041A======= Content-Type: Multipart/Alternative; boundary="------------Boundary-00=_5BJ2A0V2QL8000000000" --------------Boundary-00=_5BJ2A0V2QL8000000000 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable 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 --------------Boundary-00=_5BJ2A0V2QL8000000000 Content-Type: Text/HTML; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Correction, the readings were 2.017 to 2.026mm
Georges  
 
-------Original Message-------
 
Date: 04/16/05 19:= 05:31
Subject: [FlyRotar= y] Re: New rotors, New housings
 
 Hi! Ken
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 & got a reading of = 0.017 to 0.026mm, I guess they are toast.
 
 Georges Boucher
-------Original Message-------
 
Date: 04/16/05 18:= 54:27
Subject: [FlyRotar= y] Re: New rotors, New housings
 
   That's off each side, Rob at Pineapple racing takes 20 = thousandths off each side but I figured the 15 should do it.
    Ken




 
Ken,
Is that all off the one sid= e - that much off each side - or half off each side !?
George ( down under)=
 
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.
  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.
  Ken



Ed,
=
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.
 
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 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 the RX7 rotors and skims them to eliminate this problem. T= his is a remedy that many in the racing game use as well.
 
 I don't believe there's a problem= with the single rotor application and won't be skimming the rotor. =
 
Hope that helps!
George ( down under)
  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.
  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.
 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.
  Ken



Well, the decision h= as been made.  Thanks in part to the wife's continued interest in my= warm body on  cold winter nights, the decision has been made to pur= chase new rotors and rotor housings.  $$ but apparently I am worth i= t {:>)

 
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.  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.

 
In the process of getting quotes.

 
Ed

 
Ed Anderson
Rv-6A N494BW Rotary Powe= red
Matthews, NC
eanderson@carolina.rr.com

>>  Homepage:  http://www.flyrotary.com/
>>=   Archive:   http://lancaironline.net/lists/flyrotary/List= =2Ehtml

 
 
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