X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 900357 for flyrotary@lancaironline.net; Wed, 20 Apr 2005 19:28:17 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-185-127.carolina.res.rr.com [24.74.185.127]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j3KNRTL5025539 for ; Wed, 20 Apr 2005 19:27:30 -0400 (EDT) Message-ID: <12a201c54600$87ad40f0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: New Rotors! Date: Wed, 20 Apr 2005 19:27:33 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_129F_01C545DF.00672370" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_129F_01C545DF.00672370 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable The side seals for one, they are "V" shaped. Also apparently the corner = seal is made out of something different and Mazdatrix says DON"T use = them with an Rx-7 housing or it will be toast (the housing that is). = They apparently (have not seen one so only reporting what I hear) have = cuts on the side facing the exhaust port to permit the gas to flow = better. Mazdatrix apparently reversed the rotors hoping to get this = cut-out? to draw more intake charge - but apparently that didn't work = out. Ed ----- Original Message -----=20 From: kenpowell@comcast.net=20 To: Rotary motors in aircraft=20 Sent: Wednesday, April 20, 2005 9:46 AM Subject: [FlyRotary] Re: New Rotors! Ed, What pieces are different for the RX8 rotors besides the apex seals? Ken Powell=20 Bryant, Arkansas=20 501-847-4721 -------------- Original message --------------=20 Yes, Indeed! Started putting the rotor pieces together last night, = the used side seals all give very good tolerances. I had to change some = from the slots they were in on the old rotors, but juggling them around = I could match the seal length to the slot quite well. Glad I could as = you have to trim the stock side seals for your fit - a tedious task at = best. I was a bit dismayed to find that the tolerance on my oil control = rings wear were at or outside of specs after only 150 hours. Again, = this could be accelerated wear due to ingesting the dust around my = hangar. So had to order some more. A filter will be next on the list. Interestingly in the basic kit you get through Tracy, they provide a = length of rubber channel tube that you cut your corner seal rubber plugs = out of. ----- Original Message -----=20 From: Steve Brooks=20 To: Rotary motors in aircraft=20 Sent: Wednesday, April 20, 2005 7:48 AM Subject: [FlyRotary] Re: New Rotors! Ed, Sounds like the fun is ready to begin. Steve Brooks -----Original Message----- From: Rotary motors in aircraft = [mailto:flyrotary@lancaironline.net]On Behalf Of Ed Anderson Sent: Tuesday, April 19, 2005 11:06 PM To: Rotary motors in aircraft Subject: [FlyRotary] New Rotors! Got the new rotors today - first time I've ever seen a new rotor = - the are bright metallic {:>).=20 The depth of the apex seal slot on the new rotors ranged from = 9.65mm to 9.77 mm. Interestingly the width of the bottom of the apex = slot was 1.88mm but the top was narrower at 1.778mm. I noticed that the = lip of the apex seal slot had a tiny burr of metal along it as if they = were not using a sharp enough tool or else pushing it along too fast. = Or perhaps no one took the time to deburr the slot. Just in case any of you ever wonder whether you are looking at a = 9.7:1 rotor or some other rotor, there is a fairly easy way to tell. = Lay a straight edge across the depression in the rotor and measure from = its bottom to the center of the depression, it should measure right at 4 = mm. The 9.1 measure around 7mm for comparison. Just thought you might = want to know. Ed Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ------=_NextPart_000_129F_01C545DF.00672370 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
The side seals for one, they are "V" = shaped. =20 Also apparently the corner seal is made out of something different and = Mazdatrix=20 says DON"T use them with an Rx-7 housing or it will be toast (the = housing that=20 is).  They apparently (have not seen one so only reporting what I = hear)=20 have cuts on the side facing the exhaust port to permit the gas to flow=20 better.  Mazdatrix apparently reversed the rotors hoping to get = this=20 cut-out? to draw more intake charge - but apparently that didn't work=20 out.
 
Ed
----- Original Message -----
From:=20 kenpowell@comcast.net
Sent: Wednesday, April 20, 2005 = 9:46=20 AM
Subject: [FlyRotary] Re: New=20 Rotors!

Ed,
What pieces are different for the RX8 rotors besides the apex=20 seals?

Ken Powell
Bryant, Arkansas
501-847-4721
 
--------------=20 Original message --------------
Yes, Indeed!  Started putting = the rotor=20 pieces together last night, the used side seals all give very good=20 tolerances.  I had to change some from the slots they were = in on=20 the old rotors, but juggling them around I could match the seal = length to=20 the slot quite well.  Glad I could as you have to trim the = stock side=20 seals for your fit - a tedious task at best.
 
I was a bit dismayed to find that = the tolerance=20 on my oil control rings wear were at or outside of specs after only = 150=20 hours.  Again, this could be accelerated wear due to ingesting=20  the dust around my hangar.  So had to order some = more. =20  A filter will be next on the list.
 
Interestingly in the basic kit you = get through=20 Tracy, they provide a length of rubber channel tube that you = cut your=20 corner seal rubber plugs out of.
 
----- Original Message ----- =
From:=20 Steve=20 Brooks
To: Rotary motors in = aircraft=20
Sent: Wednesday, April 20, = 2005 7:48=20 AM
Subject: [FlyRotary] Re: = New=20 Rotors!

Ed,
Sounds like the fun is ready to = begin.
 
Steve Brooks
 
-----Original Message-----
From: Rotary = motors in=20 aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of = Ed=20 Anderson
Sent: Tuesday, April 19, 2005 11:06 = PM
To:=20 Rotary motors in aircraft
Subject: [FlyRotary] New=20 Rotors!

Got the new rotors today - = first time I've=20 ever seen a new rotor - the are bright metallic=20 {:>). 
 
The depth of the apex seal slot = on the new=20 rotors ranged from 9.65mm to 9.77 mm.  Interestingly the = width of=20 the bottom of the apex slot was 1.88mm but the top was narrower = at=20 1.778mm.  I noticed that the lip of the apex seal slot had = a tiny=20 burr of metal along it as if they were not using a sharp enough = tool or=20 else pushing it along too fast.  Or perhaps no one took the = time to=20 deburr the slot.
 
Just in case any of you ever wonder whether you are looking = at a=20 9.7:1 rotor or some other rotor, there is a fairly easy way to=20 tell.  Lay a straight edge across the depression in the = rotor and=20 measure from its bottom to the center of the depression, it = should=20 measure right at 4 mm.  The 9.1 measure around 7mm for=20 comparison.  Just thought you might want to know.
 
Ed
 
Rv-6A N494BW Rotary=20 Powered
Matthews, NC
eanderson@carolina.rr.com
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