X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost02.isp.att.net ([204.127.217.102] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTP id 5994346 for flyrotary@lancaironline.net; Fri, 04 Jan 2013 00:23:07 -0500 Received-SPF: none receiver=logan.com; client-ip=204.127.217.102; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-145-180.mco.bellsouth.net[98.85.145.180]) by isp.att.net (frfwmhc02) with SMTP id <20130104052231H02000amqje>; Fri, 4 Jan 2013 05:22:31 +0000 X-Originating-IP: [98.85.145.180] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: turbo manifold Date: Fri, 4 Jan 2013 00:22:34 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00A1_01CDEA11.9875E820" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Ac3qBTNMLt29xekMRfGADZo+nqDUCgANMqjg X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_00A1_01CDEA11.9875E820 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit How are the folks with turbos handling the plumbing? Where are you picking up the pressurized oil and where/how do you return the oil to the crankcase? I read in the install instructions that the oil drain line should be one inch in diameter, return above oil level in the crankcase, and have no traps in it. That doesn't seem possible with the rotary?? How are you doing it? How far would it be safe to boost the Renesis with the compression at 10:1? Where are you picking up the water for the water cooling of the turbo? Does anyone have any good pictures of the installation that shows these things? B2 _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Steven W. Boese Sent: Thursday, January 03, 2013 5:53 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: turbo manifold Rich, A load cell was installed on one side of the engine mount to measure torque. HP was calculated from the torque and the RPM. Most installations with a Renesis engine appear to be using a higher gear ratio than the 2.18:1 ratio of the reduction drives that I have. This lowers the limit the of engine RPM that I am able to achieve with a prop suitable for flight. The HP required to turn the prop at a given static RPM does not change if the atmospheric conditions haven't changed. At the highest MAP of 21.5" shown on the chart for the NA 13B, the 13B HP is very close to the HP of the Renesis at that same MAP. The test data on the chart was generated as a first pass at assessing the suitability of turbocharging the Renesis compared to the 13B engine. None of the configurations should be considered to be optimized. Steve Boese RV6A, 1986 13B NA, RD1A, EC2 _____ From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of argoldman@aol.com [argoldman@aol.com] Sent: Thursday, January 03, 2013 2:43 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: turbo manifold I had assumed that these were dynamometer results. By what method did you ascertain the HP listed? Interesting results. If the blades stalled (overpowered) at such a low RPM would it be correct to assume that at that RPM the engine was producing more power than the non Renesis engines at the same RPM with the same prop??? I am so confused... interested also in perhaps turboing the renesis in the future?? Please help Rich -----Original Message----- From: Steven W. Boese To: Rotary motors in aircraft Sent: Thu, Jan 3, 2013 2:55 pm Subject: [FlyRotary] Re: turbo manifold Bobby, I honestly don't know what the exhaust sound was like. The control panel for the test stand is on the opposite side from the exhaust outlet. Also, at RPM above 5200, the 3 blade Warp Drive prop was stalled and the prop noise was just deafening. I could feel what seemed to be ground vibrations in my feet so testing higher power levels was disconcerting. At RPM below 5200, the noise was similar to having the GM diesel truck muffler on the NA 13B. Steve _____ From: Rotary motors in aircraft [ flyrotary@lancaironline.net] on behalf of Bobby J. Hughes [ bhughes@qnsi.net] Sent: Thursday, January 03, 2013 1:33 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: turbo manifold Steve, How did it sound without a muffler? I removed my belly muffler for a speed run and it was not tolerable in the cockpit. Only picked up 1-2 mph so the muffler is back on. Bobby ------=_NextPart_000_00A1_01CDEA11.9875E820 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

How are the folks with turbos = handling the plumbing?  Where are you picking up the pressurized oil and = where/how do you return the oil to the crankcase?  I read in the install = instructions that the oil drain line should be one inch in diameter, return above oil = level in the crankcase, and have no traps in it.  That doesn’t seem possible with the rotary?? How are you doing it? =

 

How far would it be safe to boost = the Renesis with the compression at 10:1?

 

Where are you picking up the water = for the water cooling of the turbo?

 

Does anyone have any good pictures = of the installation that shows these things?

 

B2

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Steven W. Boese
Sent: Thursday, January = 03, 2013 5:53 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = turbo manifold

 

Rich,

 

A load cell was installed on one side of = the engine mount to measure torque.  HP was calculated from the torque = and the RPM.  Most installations with a Renesis engine appear to be using a = higher gear ratio than the 2.18:1 ratio of the reduction drives that I = have.  This lowers the limit the of engine RPM that I am able to achieve = with a prop suitable for flight.

 

The HP required to turn the prop at a = given static RPM does not change if the atmospheric conditions haven't = changed.  At the highest MAP of 21.5" shown on the chart for the NA 13B, the = 13B HP is very close to the HP of the Renesis at that same MAP.  The test = data on the chart was generated as a first pass at assessing the suitability of turbocharging the Renesis compared to the 13B = engine.  None of the configurations should be considered to be optimized.  =

 

Steve = Boese

RV6A, 1986 13B NA, RD1A, = EC2

      =

From: Rotary motors = in aircraft [flyrotary@lancaironline.net] on behalf of argoldman@aol.com [argoldman@aol.com]
Sent: Thursday, January = 03, 2013 2:43 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = turbo manifold

I had assumed that these were = dynamometer results. By what method did you ascertain the HP listed?

Interesting results. If the blades stalled (overpowered) at such a low = RPM would it be correct to assume that at that RPM the engine was producing = more power than the non Renesis engines at the same RPM with the same = prop???

I am so confused... interested also in perhaps turboing the renesis in = the future??

Please help

Rich

 

=

 

=

 

=

-----Origina= l Message-----
From: Steven W. Boese <SBoese@uwyo.edu>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thu, Jan 3, 2013 2:55 pm
Subject: [FlyRotary] Re: turbo manifold

Bobby,

 

I honestly don't know what the = exhaust sound was like.  The control panel for the test stand is on the = opposite side from the exhaust outlet.  Also, at RPM above 5200, the 3 blade = Warp = Drive prop was stalled and the prop noise was just deafening.  I could feel what seemed to be ground vibrations in my feet so testing = higher power levels was disconcerting.  At RPM below 5200, the noise was = similar to having the GM diesel truck muffler on the NA = 13B.

 

Steve

=

From: Rotary motors = in aircraft [flyrotary@lancaironline.net] on behalf of Bobby J. Hughes [bhughes@qnsi.net]
Sent: Thursday, January = 03, 2013 1:33 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = turbo manifold

Steve,

 

How did it = sound without a muffler? I removed my belly muffler for a speed run and it was = not tolerable in the cockpit. Only picked up 1-2 mph so the muffler is back = on.

 

Bobby=

 

 

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