X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-fx0-f52.google.com ([209.85.161.52] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTPS id 5084520 for flyrotary@lancaironline.net; Sun, 07 Aug 2011 08:21:26 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.161.52; envelope-from=msteitle@gmail.com Received: by fxd18 with SMTP id 18so1086709fxd.25 for ; Sun, 07 Aug 2011 05:20:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=sVAue3QX7ErhR1pGPWcWMgxMh8T60wKNbrYZbRgZOUc=; b=JdQREIWxShlbbGjReropnM4ZWSsDtN6HxZoT/k3Mxly8YmEttYoeRibPTJCRBvezCb W0HRNZD/CdytCju4eSAAq0KVQ99SvhMGPCxCOEKnYSvN4IWKxrgHcdSXKBugS7BJXQHM QG7wy/4SGsAnOeCucMwdvwgZz7rRlbYAkT2/M= MIME-Version: 1.0 Received: by 10.223.161.214 with SMTP id s22mr5808864fax.59.1312719648561; Sun, 07 Aug 2011 05:20:48 -0700 (PDT) Received: by 10.223.83.194 with HTTP; Sun, 7 Aug 2011 05:20:48 -0700 (PDT) In-Reply-To: References: Date: Sun, 7 Aug 2011 07:20:48 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Fuel Burn From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=002354530698579ae704a9e95c56 --002354530698579ae704a9e95c56 Content-Type: text/plain; charset=ISO-8859-1 Ditto that! Good report Dennis. Now how about paying your buddies in Lockhart a visit sometime? Mark On Sat, Aug 6, 2011 at 10:06 PM, Samuel Treffinger < samuel.treffinger@gmail.com> wrote: > Thank you very much for the information. I appreciate it much. > > Samuel > > On Sat, Aug 6, 2011 at 5:29 PM, Dennis Havarlah wrote: > >> ** >> Samual, >> I finally had the oportunity to record some data for you to consider. >> >> I flew from Austin to Houston and then on to Beaumont Texas before >> returning to Austin the same day. >> >> Aircraft: RV-7A with Renesis 4 port and Sam James Rotary cowl. Prop - >> 78X88 Catto 2 blade composite, Tracy's EC-2, EM-2 and RWS 2.85:1 redrive. >> Intake is my design. Exhaust uses the stock Renesis manifold (exhaust is >> directed toward the front of the aircraft), a swirl tube that redirects the >> exhaust from the front to the rear and a HushPower Resonator that *has >> lost its guts after about 225 hrs.* My exhaust system is all inside the >> cowl. Very quiet exhaust! >> >> *Morning flight from Austin to Houston*. >> Aircraft take-off weight was approx. 1800#. Two guys, full fuel and 50 # >> baggage. >> First Leg in the morning - Cruse @ 7500" OAT 74 deg. F ; 5650 rpm, MP - >> 20.5 in hg, 8.0 gph regular auto fuel with 10 % ethanol ( Shell ) : >> Airspeed indicated 122 kts , EM-2 showed 163 mph, Calculated TAS was >> 165.6 mph. >> My oil temp was 173 deg F and water was 190 deg F. My EGT was 1630 deg >> F. My EGT probes are located on the stock Renesis exhaust manifold about >> 3/4 inch outboard of the manifold to engine flange. This close location >> produces higher EGT readings. >> >> The second leg was short from Houston to Beaumont so no data was taken. >> >> *Return to Austin (Cedar Park) was at 5 PM and the OAT was 103 deg F. at >> Beaumont!* >> Aircraft weight was about 1700 #. >> At liftoff I recorded engine RPM of 5880 rpm and 13.6 to 13.8 gph fuel >> flow. >> During climb I reduced power to 24.5 in-hg and climbed at 800 to 1100 >> ft/min. >> I recorded the EGT as 1750 deg F but don't know if this was at full >> throttle or 24.5 in-hg. >> During climb to 8500' maximum oil was 216 deg F and water was 208 deg F. >> >> *Cruse Data at 8500' ; OAT 72 'deg F.* >> Engine RPM - 5650. ; Mp - 19.2 " HG.; EGT - 1650 F; 8.0 gph ; Indicated >> air speed 119 kts >> EM-2 showed 164 TAS. >> oil temp - 192 deg F. water temp 175 deg F. >> >> I leaned the engine to 7.5 gph for a few minutes toward the end of the >> flight and got 159 TAS, 5520 rpm 170 deg F water and 189 deg F oil. I plan >> to experiment with much leaner operation in the future. >> >> Dennis Haverlah >> >> ----- Original Message ----- >> *From:* Samuel Treffinger >> *To:* Rotary motors in aircraft >> *Sent:* Thursday, July 28, 2011 3:40 PM >> *Subject:* [FlyRotary] Fuel Burn >> >> Hey, What kind of fuel burn are you guys getting at say 60% power and 75% >> power?? >> thanks, >> Sam >> >> > --002354530698579ae704a9e95c56 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Ditto that! =A0Good report Dennis. =A0Now how about paying your buddies in = Lockhart a visit sometime? =A0

Mark

On Sat, Aug 6, 2011 at 10:06 PM, Samuel Treffinger <samuel.treffing= er@gmail.com> wrote:
Thank you very much for the information. I = appreciate it much.

Samuel

On Sat, Aug 6, 2011 at 5:29 PM, Dennis Havarlah <clouduster@austin.= rr.com> wrote:
Samual,
I finally had the oportunity to record= some data=20 for you to consider.
=A0
I flew from Austin to Houston and then= on to=20 Beaumont Texas before returning to Austin the same day.=A0
=A0
Aircraft:=A0 RV-7A with Renesis 4 port= and Sam=20 James Rotary cowl.=A0 Prop - 78X88 Catto 2 blade composite, Tracy's EC-= 2,=20 EM-2 and RWS=A0 2.85:1 redrive.=A0 Intake is my design.=A0 Exhaust uses=20 the stock Renesis manifold (exhaust is directed toward the front of the=20 aircraft), a swirl tube that=A0redirects the exhaust from the front to the= =20 rear and a HushPower Resonator that has lost its guts after about 225=20 hrs.=A0 My exhaust system is all inside the cowl.=A0 Very quiet=20 exhaust!
=A0
Morning flight from Austin to=20 Houston.
Aircraft take-off weight was approx. 1= 800#. Two=20 guys, full fuel and 50 # baggage.
First Leg in the morning - Cruse @ 750= 0"=A0 OAT=20 74 deg. F=A0; 5650 rpm,=A0 MP - 20.5 in hg, 8.0 gph regular auto fuel with= =20 10 % ethanol ( Shell=A0) : =A0Airspeed indicated 122 kts , EM-2 showed=20 163 mph,=A0 Calculated TAS was 165.6= =20 mph.=A0
My oil temp was 173=A0deg F and water = was 190=20 deg F.=A0 My EGT was 1630=A0deg F.=A0 My EGT probes are located on the=20 stock Renesis exhaust manifold about 3/4 inch outboard of the manifold to e= ngine=20 flange.=A0 This close location produces higher EGT readings.
=A0
The second leg was short from Houston = to Beaumont=20 so no data was taken.
=A0
Return to Austin=A0(Cedar Park) was= =A0at 5=20 PM and=A0the OAT was 103 deg F.=A0at Beaumont!
Aircraft weight was about 1700 #.
At liftoff=A0I recorded engine RPM of = 5880 rpm=20 and 13.6 to 13.8 gph fuel flow.
During climb I reduced power to 24.5 i= n-hg and=20 climbed at 800 to 1100 ft/min.
I recorded the EGT as 1750=A0deg F but= don't=20 know if this was at full throttle or 24.5 in-hg.
During climb to 8500' maximum oil = was 216=A0deg=20 F and=A0 water was 208=A0deg F.
=A0
Cruse Data at 8500'=A0; OAT 72 = 'deg=20 F.
Engine RPM - 5650.=A0; Mp - 19.2 "= ; HG.; EGT -=20 1650 F;=A0=A08.0 gph ; Indicated air speed 119 kts
EM-2 showed 164 TAS.
oil temp - 192 deg F. water temp 175= =20 deg=A0F.
=A0
I leaned the engine to 7.5 gph for a f= ew minutes=20 toward the end of the flight and got 159 TAS, 5520 rpm 170 deg F water and = 189=20 deg=A0F oil.=A0 I plan to experiment with much leaner operation in the=20 future.
=A0
Dennis Haverlah
----- Original Message -----
Sent: Thursday, July 28, 2011 3:40= =20 PM
Subject: [FlyRotary] Fuel Burn

Hey, What kind of fuel burn are you guys getting at say 60= %=20 power and 75% power??=20
thanks,
Sam


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