Return-Path: Received: from [24.25.9.101] (HELO ms-smtp-02-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2.1) with ESMTP id 407854 for flyrotary@lancaironline.net; Sun, 12 Sep 2004 18:06:16 -0400 Received-SPF: none receiver=logan.com; client-ip=24.25.9.101; envelope-from=eanderson@carolina.rr.com Received: from EDWARD (cpe-069-132-183-211.carolina.rr.com [69.132.183.211]) by ms-smtp-02-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i8CM5CNs016214 for ; Sun, 12 Sep 2004 18:05:13 -0400 (EDT) Message-ID: <000801c49914$968dfd60$2402a8c0@EDWARD> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: First engine run with Monster Prop Date: Sun, 12 Sep 2004 18:05:17 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0005_01C498F3.0F325C10" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0005_01C498F3.0F325C10 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ok, Tracy, sorry, I though you were referring to a more recent time = frame {:>). Boy, was it 11 years ago? We must be having fun! In any case, got the spinner painted with the help of about 3 gnats who = gave their lives to the project. So going out tomorrow to put it on and = will do another run up or two and plan to fly Tuesday if Weather permits = because by Wednesday, the remnants of IVAN are supposed to be dumping = water on us. I presume you have you power back? =20 Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ----- Original Message -----=20 From: Tracy Crook=20 To: Rotary motors in aircraft=20 Sent: Sunday, September 12, 2004 5:22 PM Subject: [FlyRotary] Re: First engine run with Monster Prop Should have been more clear about that Ed. I was talking about the = FIRST takeoff almost 11 years ago with my old prop (70 x 73). Engine = was over propped and way out of tune with carbs at the time. I was only = saying that at 4400 rpm the engine still had plenty of power to takeoff = & fly. Tracy ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Friday, September 10, 2004 7:50 AM Subject: [FlyRotary] Re: First engine run with Monster Prop Good Point, Dave Tracy told me that he first flew his new prop taking off on only = 4400 rpm - so that tends to indicate swinging a big prop (even slowly) = moves lots of air. Now, if I can just get the spinner successfully = painted, I can go flying next week. Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ----- Original Message -----=20 From: DaveLeonard=20 To: Rotary motors in aircraft=20 Sent: Friday, September 10, 2004 1:04 AM Subject: [FlyRotary] Re: First engine run with Monster Prop Ed, if nothing else, this prop will be more efficient so with the = same hp you will notice an improvement, especially in climb. Dave Leonard ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Thursday, September 09, 2004 2:07 PM Subject: [FlyRotary] First engine run with Monster Prop Ok, got out today and fired up the engine with the new prop = and gear box. This is the 76x88 inch prop that is 2" longer than the = one Tracy and Rusty have on their birds. The static was 5400 rpm at = 28.75" with ambient manifold pressure reading 29.75" (as best I = interpolated). OAT was 87F. Idle was considerably smoother whether due = to increased mass of larger prop, new gear box or both. I did notice = the 2.85 has considerably less gear lash than the 2.17. I took it for a quick taxi up and down our 35' wide runway = and notice that the "P" effect was considerable at full power. It felt = like someone was taking the nose of the aircraft and forcefully shoving = it to the left. Rudder with Nose wheel helping kept things under = control without any problem, but I think my first full power takeoffs = will be where they have those 100 -150' wide runways - just to be = safe.{:>). Subjectively seemed to have considerable more acceleration = but will not do any definitive test on this runway. Temperatures were normal. After extended runup the oil temps = approached 190F and coolant temp got up to 210F this is what I would = normally see. Considering that the static rpm was the same as my old = gearbox and prop, it likely I was producing the same HP and therefore = would not expect major difference. The larger prop did not seem to = interfere with the cooling airflow - at least on the ground. The RPM is a bit less than I had hoped for - but may just = indicate that the 2" increased diameter over the ones flying now (74x88) = is a bit more prop than is optimum. I will fly with it and record the = data so that Performance Propellers will know how much to trim when I = ship it back. Hope to get the spinner painted over the weekend and go flying = early next week. Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC Hi, Ed...in the military I was fortunate enough to have the = opportunity to fly a few aircraft that are, as the military feels a need = to do to their aircraft, overpowered. In New Mexico, I had a brief = flight in a P-51. A definate torque machine. The accepted method for = takeoff was to apply power gently, until enough airspeed is achieved = that the rudder has more authority. (Of course ailerons and other = controls will also slowly gain more authority). Once the tailwheel was = up and flying speed was attained, only then was more power added. I = also flew the U-6 (Beaver) in Viet Nam.....we were also limited on = takeoff power. Once flying speed was attained, more power could be = added. Probably will work for the RVs with "the club" as well. = Wouldn't hurt to try it. Congrats on getting your engine, prop/redrive = assembled. Thanks for keeping us informed with your progress and test = results. Paul Conner, 13b powered SQ2000 at the airport and ready for = taxi testing. ------=_NextPart_000_0005_01C498F3.0F325C10 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Ok, Tracy, sorry, I though you were referring to = a more=20 recent time frame {:>).  Boy, was it 11 years ago?  We must = be=20 having fun!
 
 In any case, got the spinner painted with = the help=20 of about 3 gnats who gave their lives to the project.  So going out = tomorrow to put it on and will do another run up or two and plan to fly = Tuesday=20 if Weather permits because by Wednesday, the remnants of IVAN are = supposed to be=20 dumping water on us.
 
I presume you have you power back?  =
 
Ed
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
From:=20 Tracy = Crook
Sent: Sunday, September 12, = 2004 5:22=20 PM
Subject: [FlyRotary] Re: First = engine run=20 with Monster Prop

Should have been more clear about that Ed.  I was talking = about the=20 FIRST takeoff almost 11 years ago with my old prop (70 x 73).  = Engine was=20 over propped and way out of tune with carbs at the time.  I was = only=20 saying that at 4400 rpm the engine still had plenty of power to = takeoff &=20 fly.
 
Tracy
----- Original Message -----
From: Ed Anderson
To: Rotary motors in = aircraft=20
Sent: Friday, September 10, = 2004 7:50=20 AM
Subject: [FlyRotary] Re: = First engine=20 run with Monster Prop

Good Point, Dave
 
Tracy told me that he first flew = his new prop=20 taking off on only 4400 rpm - so that tends to indicate swinging a = big prop=20 (even slowly) moves lots of air.  Now, if I can just get the = spinner=20 successfully painted, I can go flying next week.
 
Ed
 
 Ed Anderson
RV-6A = N494BW Rotary=20 Powered
Matthews, NC
----- Original Message ----- =
From:=20 DaveLeonard
To: Rotary motors in = aircraft=20
Sent: Friday, September 10, = 2004 1:04=20 AM
Subject: [FlyRotary] Re: = First engine=20 run with Monster Prop

Ed, if nothing=20 else, this prop will be more efficient so with the same hp you = will notice=20 an improvement, especially in climb.
 
Dave=20 Leonard
----- Original Message ----- =
From:=20 Ed Anderson =
To: Rotary motors in=20 aircraft
Sent: Thursday, = September 09,=20 2004 2:07 PM
Subject: [FlyRotary] = First engine=20 run with Monster Prop

Ok, got out today and fired = up the engine=20 with the new prop and gear box.  This is the 76x88 inch = prop that=20 is 2" longer than the one Tracy and Rusty have on their = birds. =20 The static was 5400 rpm at 28.75" with ambient manifold = pressure=20 reading 29.75" (as best I interpolated). OAT was = 87F.  Idle=20 was considerably smoother whether due to increased mass of = larger=20 prop, new gear box or both.  I did notice the 2.85 has=20 considerably less gear lash than the 2.17.
 
 I took it for a quick = taxi up and=20 down our 35' wide runway and notice that the "P" effect was=20 considerable at full power.  It felt like someone was = taking the=20 nose of the aircraft and forcefully shoving it to the = left. =20 Rudder with Nose wheel helping kept things under control = without any=20 problem, but I think my first full power takeoffs will be = where they=20 have those 100 -150' wide runways - just to be = safe.{:>). =20 Subjectively seemed to have considerable more = acceleration but=20 will not do any definitive test on this runway.
 
Temperatures were = normal.  After=20 extended runup the oil temps approached 190F and coolant temp = got up=20 to 210F this is what I would normally see.  Considering = that the=20 static rpm was the same as my old gearbox and prop, it likely = I was=20 producing the same HP and therefore would not expect major=20 difference.  The larger prop did not seem to interfere = with the=20 cooling airflow - at least on the ground.
 
The RPM is a bit less than I = had hoped=20 for - but may just indicate that the 2" increased = diameter over=20 the ones flying now (74x88) is a bit more prop than is = optimum. =20 I will fly with it and record the data so that Performance = Propellers=20 will know how much to trim when I ship it back.
 
Hope to get the spinner = painted over the=20 weekend and go flying early next week.
 
Ed
 
 
Ed Anderson
RV-6A N494BW = Rotary=20 Powered
Matthews, NC
 
Hi, Ed...in the military I = was fortunate=20 enough to have the opportunity to fly a few aircraft that are, = as the=20 military feels a need to do to their aircraft, =20 overpowered.  In New Mexico, I had a brief flight in a=20 P-51.  A definate torque machine.  The accepted = method for=20 takeoff was to apply power gently, until enough airspeed is = achieved=20 that the rudder has more authority. (Of course ailerons and = other=20 controls will also slowly gain more authority).  Once the = tailwheel was up and flying speed was attained, only then was = more=20 power added.  I also flew the U-6 (Beaver) in Viet = Nam.....we=20 were also limited on takeoff power. Once flying speed was = attained,=20 more power could be added.  Probably will work for the = RVs with=20 "the club" as well.  Wouldn't hurt to try it.  = Congrats on=20 getting your engine, prop/redrive assembled.  Thanks for = keeping=20 us informed with your progress and test results.  Paul = Conner,=20 13b powered SQ2000 at the airport and ready for taxi=20 = testing.
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