X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail06.syd.optusnet.com.au ([211.29.132.187] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTPS id 2604090 for flyrotary@lancaironline.net; Tue, 18 Dec 2007 16:13:11 -0500 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.187; envelope-from=lendich@optusnet.com.au Received: from george (d58-108-80-173.dsl.nsw.optusnet.com.au [58.108.80.173]) by mail06.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id lBILCL8F017328 for ; Wed, 19 Dec 2007 08:12:23 +1100 Message-ID: <003b01c841ba$b185d640$ad506c3a@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Supercharging Date: Wed, 19 Dec 2007 07:12:26 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0036_01C8420E.821FB2F0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0036_01C8420E.821FB2F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Greg, The best middle ground I've seen so far is the peripheral ported engine. = PL's PP recent attempt on an RX8 engine was 264hp at our RPM's ( 7,500 I = think). The RX8 rotors are higher compression but will go into a RX7 = engine. I'm putting one in a single rotor with 3mm apex seals, if I = could get a little less than half of that I would be happy. What exactly is your power requirements. George ( down under) Hey Bill; I hear you, and I asked Camden some of these same questions, awaiting = a reply. Their unit mounts directly to the block, and appears well = engineered, but as I said earlier, endurance, and what happens if it = blows, is my main concern. Been around the 1/4 mile tracks for more = years than I care to remember, and have seen a little excitement when = the old Gimmy 4-71's and 6-71's decided to cash in, not pretty. = Conversely, watching a turbo melt or lose a turbine blade doesn't get me = real excited either.........trying to find the best middle of the road. Greg ----- Original Message -----=20 From: wrjjrs@aol.com=20 To: Rotary motors in aircraft=20 Sent: Tuesday, December 18, 2007 7:29 AM Subject: [FlyRotary] Re: Supercharging Greg, Superchargers are sometimes simpler to implement, but there are = other reasons they aren't as popular on aircraft. First they are a power = robbing device. There is a net gain in power of course, but the charger = can require 10-15 HP to drive it at WOT and it makes the engine less = efficient. The other problem is you must be sure the unit is up to = continous use in the boost RPM range. Lastly the mount must be solid = enough to hold up to continous use as well.=20 Bill Jepson=20 -----Original Message----- From: Greg Ward To: Rotary motors in aircraft Sent: Mon, 17 Dec 2007 10:32 pm Subject: [FlyRotary] Supercharging As I have cruised around, looking at options, I came across = www.camdensuperchargers.com, who make kits for rotaries. Has anybody = had any experience with this? I like the idea of less heat, and = plumbing, but how about endurance? I know John Slade had a lot of fun = until he got the right Turbo, I wonder if the situation would be any = different with this. Greg Ward (trying to get into the air) -------------------------------------------------------------------------= --- More new features than ever. Check out the new AOL Mail! -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.503 / Virus Database: 269.17.2/1185 - Release Date: = 15/12/2007 12:00 PM ------=_NextPart_000_0036_01C8420E.821FB2F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Greg,
The best middle ground I've seen so far = is the=20 peripheral ported engine. PL's PP recent attempt on an RX8 engine was = 264hp at=20 our RPM's ( 7,500 I think). The RX8 rotors are higher compression but = will go=20 into a RX7 engine. I'm putting one in a single rotor with 3mm apex = seals, if I=20 could get a little less than half of that I would be happy.
What exactly is your power=20 requirements.
George ( down under)
Hey Bill;
I hear you, and I asked Camden some of these = same=20 questions, awaiting a reply.  Their unit mounts directly to the = block,=20 and appears well engineered, but as I said earlier, endurance, and = what=20 happens if it blows, is my main concern.  Been around the 1/4 = mile tracks=20 for more years than I care to remember, and have seen a little = excitement when=20 the old Gimmy 4-71's and 6-71's decided to cash in, not pretty. =20 Conversely, watching a turbo melt or lose a turbine blade doesn't get = me real=20 excited either.........trying to find the best middle of the=20 road.
Greg
----- Original Message -----
From:=20 wrjjrs@aol.com=20
To: Rotary motors in = aircraft=20
Sent: Tuesday, December 18, = 2007 7:29=20 AM
Subject: [FlyRotary] Re:=20 Supercharging

Greg,
Superchargers are sometimes simpler to implement, but there are = other=20 reasons they aren't as popular on aircraft. First they are a power = robbing=20 device. There is a net gain in power of course, but the charger can = require=20 10-15 HP to drive it at WOT and it makes the engine less efficient. = The=20 other problem is you must be sure the unit is up to continous use in = the=20 boost RPM range. Lastly the mount must be solid enough to hold = up to=20 continous use as well.
Bill Jepson 


-----Original = Message-----
From: Greg=20 Ward <gregw@onestopdesign.biz>
To: Rotary motors in = aircraft=20 <flyrotary@lancaironline.net>
Sent: Mon, 17 Dec 2007 10:32=20 pm
Subject: [FlyRotary] Supercharging

As I have cruised around, looking at = options, I came=20 across www.camdensuperchargers.com, who make kits for=20 rotaries.  Has anybody had any experience with this?  I = like the=20 idea of less heat, and plumbing, but how about endurance?  I = know John=20 Slade had a lot of fun until he got the right Turbo, I wonder if the = situation would be any different with this.
Greg Ward
(trying to get into the = air)
More new features than ever. Check out the new AOL Mail!

No virus found in this incoming message.
Checked by AVG Free = Edition.
Version: 7.5.503 / Virus Database: 269.17.2/1185 - = Release Date:=20 15/12/2007 12:00 PM
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