Return-Path: Received: from [65.54.241.210] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.2.1) with ESMTP id 407836 for flyrotary@lancaironline.net; Sun, 12 Sep 2004 17:35:28 -0400 Received-SPF: none receiver=logan.com; client-ip=65.54.241.210; envelope-from=lors01@msn.com Received: from hotmail.com ([65.54.168.117]) by hotmail.com with Microsoft SMTPSVC(5.0.2195.6713); Sun, 12 Sep 2004 14:23:40 -0700 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Sun, 12 Sep 2004 14:23:39 -0700 Received: from 65.54.98.142 by bay3-dav13.bay3.hotmail.com with DAV; Sun, 12 Sep 2004 21:23:39 +0000 X-Originating-IP: [65.54.98.142] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: First engine run with Monster Prop Date: Sun, 12 Sep 2004 17:22:50 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_008B_01C498ED.20FBA3D0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.10.0006.2205 Seal-Send-Time: Sun, 12 Sep 2004 17:22:50 -0400 Message-ID: X-OriginalArrivalTime: 12 Sep 2004 21:23:39.0919 (UTC) FILETIME=[C5BB39F0:01C4990E] Return-Path: lors01@msn.com This is a multi-part message in MIME format. ------=_NextPart_000_008B_01C498ED.20FBA3D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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_008B_01C498ED.20FBA3D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
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 saying=20 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
Sent: Friday, September 10, = 2004 7:50=20 AM
Subject: [FlyRotary] Re: First = engine run=20 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 = aircraft=20
Sent: Thursday, September = 09, 2004=20 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.  The=20 static was 5400 rpm at 28.75" with ambient manifold pressure = reading=20 29.75" (as best I interpolated). OAT was 87F.  Idle = was=20 considerably smoother whether due to increased mass of larger = prop, new=20 gear box or both.  I did notice the 2.85 has considerably = less gear=20 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 = considerable=20 at full power.  It felt like someone was taking the nose of = the=20 aircraft and forcefully shoving it to the left.  Rudder = with Nose=20 wheel helping kept things under control without any problem, but = I think=20 my first full power takeoffs will be where they have those 100 = -150'=20 wide runways - just to be safe.{:>).  Subjectively = seemed to=20 have considerable more acceleration but will not do any = definitive=20 test on this runway.
 
Temperatures were normal.  = After=20 extended runup the oil temps approached 190F and coolant temp = got up to=20 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 for=20 - but may just indicate that the 2" increased diameter over = the=20 ones flying now (74x88) is a bit more prop than is = optimum.  I will=20 fly with it and record the data so that Performance Propellers = will know=20 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,  = overpowered. =20 In New Mexico, I had a brief flight in a P-51.  A definate = torque=20 machine.  The accepted method for takeoff was to apply = power=20 gently, until enough airspeed is achieved that the rudder has = more=20 authority. (Of course ailerons and other controls will also = slowly gain=20 more authority).  Once the tailwheel was up and flying = speed was=20 attained, only then was more power added.  I also flew the = U-6=20 (Beaver) in Viet Nam.....we were also limited on takeoff power. = Once=20 flying speed was attained, more power could be added. =  Probably=20 will work for the RVs with "the club" as well.  Wouldn't = hurt to=20 try it.  Congrats on getting your engine, prop/redrive=20 assembled.  Thanks for keeping us informed with your = progress and=20 test results.  Paul Conner, 13b powered SQ2000 at the = airport and=20 ready for taxi=20 testing.
= ------=_NextPart_000_008B_01C498ED.20FBA3D0--