X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.227.161.51] (HELO qnsi-xch.qnsi.net) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 1000419 for flyrotary@lancaironline.net; Mon, 13 Jun 2005 12:56:48 -0400 Received-SPF: none receiver=logan.com; client-ip=24.227.161.51; envelope-from=bhughes@qnsi.net Content-class: urn:content-classes:message Return-Receipt-To: "Bobby J. Hughes" MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C57039.636317D4" Subject: RE: [FlyRotary] Re: normalized supercharger? Disposition-Notification-To: "Bobby J. Hughes" X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 Date: Mon, 13 Jun 2005 12:00:21 -0500 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: normalized supercharger? Thread-Index: AcVwNXcpFcK4sEWdTeGUqK7L3aTy3wAAuzNg From: "Bobby J. Hughes" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C57039.636317D4 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Jonathan, =20 Power (boost PSI) really does matter for normalization. At 8000 ft air pressure is at 22.22 hg. It will talk about 3.75 psi of boost to recover to 29.92. But you are correct. No need to work the spin the SS any faster than necessary.=20 =20 Bobby ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Jonathan Crawford Sent: Monday, June 13, 2005 11:29 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: normalized supercharger?=20 I'm not sure power really matters in the configuration we are discussing... if you were going to boost, then yes it might be important, but in normalizing situations having extra power is just wasted, cause you are only maintaining ~30" manifold. The Whipple superchargers are also more fragile, they require a very solid mounting due to the internal clearances of the blower, if you do not have a good mounting the case will flex and the screws will decide to become one with the housing, which is one failure mode I do not want to even consider since it throws bits of the blower into the engine. =20 Jonathan ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of rijakits Sent: Monday, June 13, 2005 9:49 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: normalized supercharger?=20 Bobby, before you pluck down the money for the Eaton, check out the Whipple/KenneBell/Lysholm. In the last 5.0-Mustang mag (sometimes I fall back to old habits, sorry.... :) ), there was an advertisement for a KenneBell setup as a direct replacement for the Eaton ( there was some factory offer with a Eaton charger, probably from the Motorsports department...), which claims more power/efficiency with the same setup (bolt in...) I know that the Whipple is pricier than the Eaton, but not that much! =20 Thomas J ------_=_NextPart_001_01C57039.636317D4 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Jonathan,
 
Power (boost PSI) really does matter for = normalization. At=20 8000 ft air pressure is at 22.22 hg. It will talk about 3.75 psi of = boost=20 to recover to 29.92. But you are correct. No need to work the spin the = SS any=20 faster than necessary.
 
Bobby

From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On Behalf Of Jonathan=20 Crawford
Sent: Monday, June 13, 2005 11:29 AM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: normalized = supercharger?=20

I'm not sure power really matters in the = configuration we=20 are discussing... if you were going to boost, then yes it might be = important,=20 but in normalizing situations having extra power is just wasted, cause = you are=20 only maintaining ~30" manifold. The Whipple superchargers are also more = fragile,=20 they require a very solid mounting due to the internal clearances of the = blower,=20 if you do not have a good mounting the case will flex and the screws = will decide=20 to become one with the housing, which is one failure mode I do not want = to even=20 consider since it throws bits of the blower into the = engine.
 
Jonathan
From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On Behalf Of=20 rijakits
Sent: Monday, June 13, 2005 9:49 AM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: normalized = supercharger?=20

Bobby,
before you pluck down the money for the Eaton, = check out=20 the Whipple/KenneBell/Lysholm.
In the last 5.0-Mustang mag (sometimes I fall = back to old=20 habits, sorry....  :) ), there was an advertisement for a KenneBell = setup=20 as a direct replacement for the Eaton ( there was some factory offer = with a=20 Eaton charger, probably from the Motorsports department...), which = claims more=20 power/efficiency with the same setup (bolt in...)
I know that the Whipple is pricier than the = Eaton, but not=20 that much!
 
Thomas J
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