X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail13.syd.optusnet.com.au ([211.29.132.194] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTPS id 943607 for flyrotary@lancaironline.net; Sat, 14 May 2005 02:19:11 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.194; envelope-from=lendich@optusnet.com.au Received: from george (d220-236-4-74.dsl.nsw.optusnet.com.au [220.236.4.74]) by mail13.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id j4E6IKsS020938 for ; Sat, 14 May 2005 16:18:22 +1000 Message-ID: <002a01c5584d$5ab3dc30$4a04ecdc@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: sinle rotor stuff was Re: Soft Seals Sloppy slots S^4 Date: Sat, 14 May 2005 16:22:50 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0027_01C558A1.2C0A5220" 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 This is a multi-part message in MIME format. ------=_NextPart_000_0027_01C558A1.2C0A5220 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message Rusty, If the e-shaft is a cut down type - I would recommend you Not use it = in an Aircraft, but Ok for a demonstrator or the like. Much better to = use a single e-shaft made to order, using high strength steel etc. I'm in the process of getting one made locally. George (down under) Have you worked -out all your requirements for the single rotor. = It not as simple as it first appears, but not so complicated when it's = all said and done. I guess your turning down a RX7 e-shaft and filling the extra = holes.=20 Hi George, I haven't pushed the single rotor project much, because I've been = too busy with the RV-3. I did just buy a complete single rotor engine = off Ebay, and will peek inside soon. I know I have to fill in at least = one hole on the shaft, but otherwise it all seems usable. Seems to be = older housings, but I won't know how old until I get inside. I'm not = sure if I'll use this engine in it's entirety, or use the REW housings I = already purchased. It will probably depend on what I find inside. =20 Cheers, Rusty (gotta make a new intake for the RV-3 first) George, why do you recommend not to use a cut down e-shaft in an aircraft? = Do you know what the stock shaft is made of?=20 I would be concerned about having the appropoiate core strength = and durability.=20 Richard Sohn N-2071U Richard, I have the same concerns as you Richard - I don't rightly now what = the factory shafts are made of but once you start messing with it and = removing the surface hardness in bearing areas ( as you must), the = question is then how do you get it back to specifications. There are a number of good materials to use 4140, 4340, 4317, EN = 25, E26, EN 36A ( just to name a few) - some are nitrited, some are = carburised. Someone suggested to me the Mazda e-shaft is flame hardened, = so that may be another material again. I may just get the shaft material tested and Rockwell tested to = satisfy my curiosity. George (down under)=20 ------=_NextPart_000_0027_01C558A1.2C0A5220 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
 
 
Rusty,
If the e-shaft is a cut down type - = I would=20 recommend you Not use it in an = Aircraft, but Ok=20 for a demonstrator or the like. Much better to use a single e-shaft = made to=20 order, using high strength steel etc.
I'm in the process of = getting one made=20 locally.
George (down under)
Have you worked -out all your = requirements=20 for the single rotor. It not as simple as it first appears, but = not so=20 complicated when it's all said and done.
 
I guess your turning down a = RX7 e-shaft=20 and filling the extra holes. 
 
Hi George,
 
I haven't pushed the single rotor = project much,=20 because I've been too busy with the RV-3.  I did just buy a = complete=20 single rotor engine off Ebay, and will peek inside soon.  I = know I=20 have to fill in at least one hole on the shaft, but otherwise it = all seems=20 usable.  Seems to be older housings, but I won't know how old = until I=20 get inside.  I'm not sure if I'll use this engine in it's = entirety,=20 or use the REW housings I already purchased.  It will = probably depend=20 on what I find inside. 
 
Cheers,
Rusty (gotta make a new intake for the = RV-3=20 first)
 
George,
 
why do you recommend not to use a cut = down=20 e-shaft in an aircraft? Do you know what the stock shaft is made = of?=20
I=20 would be concerned about having the appropoiate core strength and=20 durability.
 
Richard=20 Sohn
N-2071U
 
Richard,
I=20 have the same concerns as you Richard - I don't rightly now what = the=20 factory shafts are made of but once you start messing with it and = removing=20 the surface hardness in bearing areas ( as you must),=20 the question is then how do you get it back to=20 specifications.
There are a number of good materials to = use 4140,=20 4340, 4317, EN 25, E26, EN 36A ( just to name a few) - some = are=20 nitrited, some are carburised. Someone suggested to me the Mazda = e-shaft=20 is flame hardened, so that may be another material=20 again.
 
I=20 may just get the shaft material tested and Rockwell tested to = satisfy=20 my curiosity.
George (down=20 under) 
 
=
------=_NextPart_000_0027_01C558A1.2C0A5220--