X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from willowsprings.uwyo.edu ([129.72.10.31] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTPS id 4496285 for flyrotary@lancaironline.net; Thu, 07 Oct 2010 03:12:11 -0400 Received-SPF: none receiver=logan.com; client-ip=129.72.10.31; envelope-from=SBoese@uwyo.edu Received: from ponyexpress-ht1.uwyo.edu (ponyexpress-ht1.uwyo.edu [10.84.60.208]) by willowsprings.uwyo.edu (8.14.4/8.14.4) with ESMTP id o977BXAn028783 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL) for ; Thu, 7 Oct 2010 01:11:33 -0600 (MDT) (envelope-from SBoese@uwyo.edu) Received: from ponyexpress-mb5.uwyo.edu ([fe80::9813:248c:2d68:a28b]) by ponyexpress-ht1 ([10.84.60.208]) with mapi; Thu, 7 Oct 2010 01:11:32 -0600 From: "Steven W. Boese" To: Rotary motors in aircraft Date: Thu, 7 Oct 2010 01:11:31 -0600 Subject: RE: [FlyRotary] Re: Sam Hodges Prop area Comparison Thread-Topic: [FlyRotary] Re: Sam Hodges Prop area Comparison Thread-Index: ActltZC1G71UNB6ITbKvFaHNOZg4ZgAMy5Cw Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_E1AA3B1AF41D8049B1E3FBD5E225626004E2675E24ponyexpressmb_" MIME-Version: 1.0 --_000_E1AA3B1AF41D8049B1E3FBD5E225626004E2675E24ponyexpressmb_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable The averages for the trips from Laramie, WY to Paducah, KY combined with th= e trip last weekend from Laramie to Weatherford, OK are: nm hr gal nmpg gph oz oil oz/gal nm/hr GS 2736 18.9 150.0 18 8.0 129 0.9 145 total total total ave ave total ave ave The engine is a 1986 13B, NA. Cruise MAP was in the range of 20-22 " Hg. T= he Dynon indicated TAS from 145 to 155 kt. Cruising altitudes varied from = 3500 to 10500 ft. Static RPM was 5000 RPM with a 2.18 reduction drive and = an Aymar Demuth 69 x 73 prop. Cruise RPM near 5400. Coolant temp of 180= deg F, oil temp of 175 deg F. The oil metering pump is used with a separa= te reservoir of 50% 2 cycle oil, 50% MMO. Steve Boese From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Beh= alf Of Ed Anderson Sent: Wednesday, October 06, 2010 6:21 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Sam Hodges Prop area Comparison On my way back from Paducha, I flew at 7500 MSL, 22 " Hg MP, 5900 rpm, 8.5 = GPH and trued out at 168MPH with a 74x88 Performance Prop. My static on t= hat day was 6000 rpm, estimate OAT at 70F. My chord is 5.5". H2O was 180F= , Oil 175F. H20 10-12PSI. Ed From: Dennis Havarlah Sent: Wednesday, October 06, 2010 6:35 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Sam Hodges Prop area Comparison I have a Catto 76X88 composit 2 blade propeller on my Renesis powered RV-7A= . Last time I tried a full power static RPM test was in June - OAT 90 deg= . Relative Humidity 70%. My static was 5730 RPM. The cord on my prop is = 6.0 inches max. My cruise #'s at 9500 ft. alt. returning from New Mexico to Austin last we= ek were: RPM - 6181; MP - 20.2 in hg. (not quite full throttle); 172 mph TA= S; fuel flow 9.3 gph; H2O - 177 deg; oil - 191 deg. OAT was about 75 deg= . Does anyone have similar numbers for RV-6 or 7's with rotary engines they w= ould share for comparson? Thanks, Dennis Haverlah ----- Original Message ----- From: Chris and Terria To: Rotary motors in aircraft Sent: Tuesday, October 05, 2010 8:09 PM Subject: [FlyRotary] Re: Sam Hodges Prop area Comparison Ed, I checked today, and mine has an 8.25 (quickly measured, not accurately) co= rd. Time will tell about what RPM I get and if I will have to trim the pro= p. I'm reminded of the line from the movie "Guys and Dolls". I don't thin= k I want to take the bet and end up with an ear full of cider. I got the new radiator today, so bracket construction and installation can = begin. Chris --_000_E1AA3B1AF41D8049B1E3FBD5E225626004E2675E24ponyexpressmb_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

 

The averages for the trips from Laramie, WY to Paducah, KY combined with the trip last weekend from Laramie to Weatherford, OK are:

nm

hr

gal

nmpg

gph

oz oil

oz/gal

nm/hr GS

2736

18.9

150.0

18

8.0

129

0.9

145

total

total

total

ave

ave

total

ave

ave

 

The engine is a 1986 13B, NA. Cruise MAP was in the range of 20-22 “ Hg.  The Dynon indicated TAS from 145 to 155 kt.  Cruising altitudes varied from 3500 to 10500 ft.  Static RPM was 5000 = RPM with a 2.18 reduction drive and an Aymar Demuth 69 x 73 prop.   C= ruise RPM near  5400.  Coolant temp of 180 deg F, oil temp of 175 deg F.  The oil metering pump is used with a separate reservoir of 50% 2 c= ycle oil, 50% MMO.

 

Steve Boese

From: Rotary motors= in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anders= on
Sent: Wednesday, October 06, 2010 6:21 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Sam Hodges Prop area Comparison<= /span>

 

On my= way back from Paducha, I flew at 7500 MSL, 22 " Hg MP, 5900 rpm, 8.5 GPH a= nd trued out at 168MPH with a  74x88 Performance Prop.  My static on that day was 6000 rpm, estimate OAT at 70F.  My chord is 5.5".&nb= sp; H2O was 180F, Oil 175F.  H20 10-12PSI.

 

Ed

 

 

 

Sent: Wednesday, Oc= tober 06, 2010 6:35 PM

Subject: [FlyRotary] R= e: Sam Hodges Prop area Comparison

 

I have a Catto 76X88 composit 2 blade propeller on my Renesis powered RV-7A.  Last time I tried a full power static RPM test was in June -&n= bsp; OAT 90 deg. Relative Humidity 70%.   My static was 5730 RPM. = ; The cord on my prop is 6.0 inches max.  

 

My cruise #'s  at 9500 ft. alt. returning from New Mexico to Austin last = week were: RPM - 6181; MP - 20.2 in hg. (not quite full throttle); 172 mph = TAS; fuel flow 9.3 gph;  H2O - 177 deg;  oil - 191 deg.  OAT was about 75 deg.

 

Does anyone have similar numbers for RV-6 or 7's with rotary engines they would share for comparson?

 

Thanks,

 

Dennis Haverlah

 

 

 

----- Original Message -----

Sent: Tuesday, Octob= er 05, 2010 8:09 PM

Subject: [FlyRotary] Re= : Sam Hodges Prop area Comparison

 

Ed,

 

I checked today, and mine has an 8.25 (quickly measured, not accurately) cord.  Time will tell about what RPM I get and if I will h= ave to trim the prop.  I’m reminded of the line from the movie “Guys and Dolls”.  I don’t think I want to take the = bet and end up with an ear full of cider.

 

I got the new radiator today, so bracket construction and installation can begin.

 

Chris

 

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