X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qw-out-2122.google.com ([74.125.92.26] verified) by logan.com (CommuniGate Pro SMTP 5.3.2) with ESMTP id 4119377 for flyrotary@lancaironline.net; Wed, 10 Feb 2010 10:02:18 -0500 Received-SPF: pass receiver=logan.com; client-ip=74.125.92.26; envelope-from=rwstracy@gmail.com Received: by qw-out-2122.google.com with SMTP id 9so15659qwb.25 for ; Wed, 10 Feb 2010 07:01:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to :content-type; bh=95bdJFCxbtNnrFE80/yjiiM8M6q1nJfp8YPF6hGwgk8=; b=YMElHWZyYD51hBtYT3NjZS+ply1tB2ZUU7G36uVeH1ZLDMJSmVsK514djO8enJghZX YAD1lhxnLgCIJK/4D0oib5ax79i17rVEND/sVOfhYEvUKOwBDFUSwHYC/xkzrqhJxb+n pGfVsc0y1woFUpIyd5pySzMyvDlV5h+iKyypU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=MRJkEB9c1djQUBVA2VTsHAQVkbuq59u9QOG50wQ3zCpMGNSKp3d61rYTbM9a5ldQxJ 2ADbxz3d8mdgbHBrXaI+LxHtUgx47cUYH6m3rIOYdGO9cxf2i2+siWA4W7zCqx7fOcEh URpvS5Y8IrWhUgf6YySEMU1jsjuEMNTkThiGM= MIME-Version: 1.0 Sender: rwstracy@gmail.com Received: by 10.224.66.66 with SMTP id m2mr177252qai.264.1265814102008; Wed, 10 Feb 2010 07:01:42 -0800 (PST) In-Reply-To: References: Date: Wed, 10 Feb 2010 10:01:41 -0500 X-Google-Sender-Auth: 9e68737901eb76ae Message-ID: <1b4b137c1002100701j518252c9t1db356c6484cb07b@mail.gmail.com> Subject: Re: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to turbo From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=00c09f905e94e6ef1b047f404ff1 --00c09f905e94e6ef1b047f404ff1 Content-Type: text/plain; charset=ISO-8859-1 Using a Toyota Supra TB on the Renesis about 65 mm dia. 5800 - 6000 static rpm depending on temp ,humidity, etc. 74 x 88 2 blade Performance prop Top end rpm about 7300. Using an RX-8 TB on the 20B, 75mm dia. About the same static RPM. 72 x 104 3 blade Catto prop. Do not know top end rpm yet and may never know. Top speed is above Vne. Both engines have very linear throttle response through the whole range. Tracy On Wed, Feb 10, 2010 at 9:46 AM, Bill Bradburry wrote: > 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 > > > --00c09f905e94e6ef1b047f404ff1 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Using a Toyota Supra TB on the Renesis about 65 mm dia.=A0 5800 - 6000 stat= ic rpm depending on temp ,humidity, etc.=A0 74 x 88 2 blade Performance pro= p Top end rpm about 7300.

Using an RX-8 TB on the 20B, 75mm dia.=A0 = About the same static RPM.=A0 72 x 104 3 blade Catto prop.=A0 Do not know t= op end rpm yet and may never know.=A0 Top speed is above Vne.

Both engines have very linear throttle response through the whole range= .

Tracy

On Wed, Feb 10, 2010 at 9= :46 AM, Bill Bradburry <bbradburry@bellsouth.net> wrote:

=A0Tracy,

What are you getting for static and top end rpm now = on your current Renesis and also on your 20B?=A0 What props are they both pulling?=A0 Are you using the stock throttle body on the Renesis?=A0 If not, what is the MM= size of the one you are using?=A0 Do you have any unused throttle on either of the two planes?

=A0

Bill B

=A0

=A0

From: Rotary motors in aircraft [mailto:fl= yrotary@lancaironline.net] On Behalf Of Tracy Crook
Sent: Wednesday, February = 10, 2010 8:35 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: r= pm 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.=A0=A0 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 (R= PM, 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.

=A0

Mike

=A0

<= span style=3D"font-size: 10pt; font-family: Tahoma; font-weight: bold;">Fro= m: Tracy Crook

<= span style=3D"font-size: 10pt; font-family: Tahoma; font-weight: bold;">Sen= t: Tuesday, February 09, 2010 5:27 PM

<= span style=3D"font-size: 10pt; font-family: Tahoma; font-weight: bold;">To:= Rotary motors in= aircraft

<= span style=3D"font-size: 10pt; font-family: Tahoma; font-weight: bold;">Sub= ject: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to turbo

=A0

Tracy, if you have the data cou= ld you give us the=A0 RPMs you saw at the 205 and 217.5 air speeds?

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

That was 209 and 217.5=A0=A0=A0

the 209 mph speed was with the 2.176 drive turning a 68 - 71 prop with engi= ne turning 6300 , mixture leaned to 17 gph.=A0 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 turn= ing 7250.=A0 I didn't get a good read on the fuel flow but obviously it wou= ld have been higher.=A0 I remember requesting priority landing after the race due to low fuel.=A0=A0

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

Tracy

=A0


--00c09f905e94e6ef1b047f404ff1--