X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost06.isp.att.net ([207.115.11.56] verified) by logan.com (CommuniGate Pro SMTP 5.3.2) with ESMTP id 4119362 for flyrotary@lancaironline.net; Wed, 10 Feb 2010 09:47:21 -0500 Received-SPF: none receiver=logan.com; client-ip=207.115.11.56; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-230-68-204.mco.bellsouth.net[74.230.68.204]) by isp.att.net (frfwmhc06) with SMTP id <20100210144644H0600q2mtte>; Wed, 10 Feb 2010 14:46:44 +0000 X-Originating-IP: [74.230.68.204] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to turbo Date: Wed, 10 Feb 2010 09:46:48 -0500 Message-ID: <078ED88B61824FCEA78267FC8C45C19B@Desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0000_01CAAA35.F7598C30" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcqqVevjP1wkY1zxRPebiAk2wx8/JAACeN0g X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01CAAA35.F7598C30 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Tracy, What are you getting for static and top end rpm now on your current Renesis and also on your 20B? What props are they both pulling? Are you using the stock throttle body on the Renesis? If not, what is the MM size of the one you are using? Do you have any unused throttle on either of the two planes? Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy Crook Sent: Wednesday, February 10, 2010 8:35 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to turbo Sun 100 flown at 500 ft. Top speed on a normally aspirated aircraft is always best at sealevel. Best fuel economy is reached up high. Tracy On Tue, Feb 9, 2010 at 10:45 PM, Mike Wills wrote: When you guys put out these numbers (RPM, speed, etc...) would also be helpful to know at what altitude. I assume at or close to sea level? I havent yet made any speed runs at low altitude. Mike From: Tracy Crook Sent: Tuesday, February 09, 2010 5:27 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to turbo Tracy, if you have the data could you give us the RPMs you saw at the 205 and 217.5 air speeds? Dennis H. Renesis RV-7A Austin, Tx. That was 209 and 217.5 the 209 mph speed was with the 2.176 drive turning a 68 - 71 prop with engine turning 6300 , mixture leaned to 17 gph. On other occasions I could push it to 6400 at best power mixture burning 20 gph. The 217.5 mph was with a 2.85 drive turning a 74 - 88 prop with engine turning 7250. I didn't get a good read on the fuel flow but obviously it would have been higher. I remember requesting priority landing after the race due to low fuel. Neither run was done at best power mixture but leaned a few gph less than max. Tracy ------=_NextPart_000_0000_01CAAA35.F7598C30 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

 Tracy,

What are you getting for static and top end rpm now on your = current Renesis and also on your 20B?  What props are they both = pulling?  Are you using the stock throttle body on the Renesis?  If not, what is = the MM size of the one you are using?  Do you have any unused throttle on = either of the two planes?

 

Bill B

 

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy Crook
Sent: Wednesday, February = 10, 2010 8:35 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = rpm vs Power was : Throttle limits was Re: N.A. Renesis to = turbo

Sun 100 flown = at 500 ft.
Top speed on a normally aspirated aircraft is always best at sealevel.   Best fuel economy is reached up high.

Tracy

On Tue, Feb 9, 2010 at 10:45 PM, Mike Wills <rv-4mike@cox.net> = wrote:

When you guys put out these numbers (RPM, speed, = etc...) would also be helpful to know at what altitude. I assume at or close to = sea level? I havent yet made any speed runs at low = altitude.

 

Mike

 

From: Tracy Crook =

Sent: Tuesday, February 09, 2010 5:27 PM

Subject: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis = to turbo

 

Tracy, if you have the data could = you give us the  RPMs you saw at the 205 and 217.5 air speeds?

Dennis H.
Renesis RV-7A
Austin, = Tx.

That was 209 and 217.5   

the 209 mph speed was with the 2.176 drive turning a 68 - 71 prop with = engine turning 6300 , mixture leaned to 17 gph.  On other occasions I = could push it to 6400 at best power mixture burning 20 gph.

The 217.5 mph was with a 2.85 drive turning a 74 - 88 prop with engine = turning 7250.  I didn't get a good read on the fuel flow but obviously it = would have been higher.  I remember requesting priority landing after the = race due to low fuel.  

Neither run was done at best power mixture but leaned a few gph less = than max.

Tracy

 

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