X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.122] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTP id 5025331 for flyrotary@lancaironline.net; Sun, 19 Jun 2011 12:23:45 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.122; envelope-from=eanderson@carolina.rr.com Return-Path: X-Authority-Analysis: v=1.1 cv=8mDY8c80ZOa76EOwICuS+E2YRQjxDgO9xqUnRMONc7w= c=1 sm=0 a=U39sxd_f5pcA:10 a=rPkcCx1H5rrOSfN0dPC7kw==:17 a=C_IRinGWAAAA:8 a=pedpZTtsAAAA:8 a=Ia-xEzejAAAA:8 a=J00i9mv_3UZMRblqgHEA:9 a=QEXdDO2ut3YA:10 a=si9q_4b84H0A:10 a=eJojReuL3h0A:10 a=EzXvWhQp4_cA:10 a=s9DxJEg0cKr0Fxcs:21 a=chVbYrMEsbCVSGdO:21 a=iSiYXNLwiUY7esF9-k8A:9 a=_RnSOfWOm17twPeREcYA:7 a=7bCRQC5CYPFKOahm:21 a=Ev6OrRSYS5l1uUl9:21 a=rPkcCx1H5rrOSfN0dPC7kw==:117 X-Cloudmark-Score: 0 X-Originating-IP: 174.110.167.5 Received: from [174.110.167.5] ([174.110.167.5:49692] helo=EdPC) by cdptpa-oedge03.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id AD/C8-00666-F622EFD4; Sun, 19 Jun 2011 16:23:11 +0000 Message-ID: <85193AED9A4E417BB0924CBEAF256622@EdPC> From: "Ed Anderson" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Blower does work Date: Sun, 19 Jun 2011 12:23:09 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000D_01CC2E7B.A69F3AD0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 This is a multi-part message in MIME format. ------=_NextPart_000_000D_01CC2E7B.A69F3AD0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Sounds like you are there - look like decision time it near - like - = when to launch? David, you indicated you could go higher on static if tied down. What = is your max static rpm and manifold pressure. The reason I asked is = when Tracy and I got it sorted out when using the 2.17:1, we could = normally get around 5200 rpm static with a 68x72 prop. Your elevation = and prop certain is a factor. By the way, I upgraded my Rv-6A brakes and rotors. My rotor are twice = the thickness of the normal Rv-6A rotor - this has eliminated brake = fade, reduce brake pad wear, and has given a solid feel to the brakes - = oh, yes, it stops quicker. I always say its one thing if you can't get = started - its an whole other ball game, if you can't get stopped {:>) Any idea when you plan on taking your bird aloft?? Ed From: hoursaway1@comcast.net=20 Sent: Sunday, June 19, 2011 10:52 AM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: Blower does work RV6A, 1140#, 13B, RWS EC2, EM2, -B-drive 2.17 to 1 ? with 20" intake = runners, home made Dynamic Chamber w/curved back, 3" throttle-body = from 2000 Cadillac Deville Northstar 4.6L eng., exhaust aprox. 2" into = 3" X 36" into Hushpower muff., standard Cleveland brakes from Vans = Aircraft, at 4700 rpm & aprox. 26 MAP, I can not hold the aircraft = from moving unless I tie it off to my truck & I can go higher in power. = David R. Cook RV6A Rotary ( transition training nearly complete, = I feel ready to go )=20 ----- Original Message ----- From: "Bill Bradburry" To: "Rotary motors in aircraft" Sent: Saturday, June 18, 2011 9:18:32 AM Subject: [FlyRotary] Re: Blower does work Hmmm! Unless your blower is a restriction, the MAP will go to ambient = pressure (100 Kp?) if you go to WOT. If you fix that prop so that it is moving air, you need to look at some = of the pictures of Tracy when he is running his engine! Even his ears = are pinned back! :>) Think dog hanging our of a car window at 100 = MPH. Sorry Tracy!! :>) You will need to tie that laptop down or it will be in the next county! Bill B -------------------------------------------------------------------------= ------- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On = Behalf Of Ernest Christley Sent: Friday, June 17, 2011 11:57 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Blower does work On 06/17/2011 07:10 PM, Bill Bradburry wrote:=20 If the prop load was maxed out, the rpm would not increase, but the MAP = could go up. It sounds, tho, like this might not have been the case = since Earnest felt the prop was not pulling. Bill B First, the prop definitely was not pulling with any significance. The = most it could do was scare my wife, and blow over a fan that I had = sitting on top of a 5-gallon bucket. I'll fix that this weekend. Second, if the prop limits rpm, the MAP will not continue to increase. = The blower is tied to the prop with a 3.18 gear ratio. Since it won't = turn any faster, it won't be able to raise the MAP any further. ------=_NextPart_000_000D_01CC2E7B.A69F3AD0 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
Sounds like you are there - look like decision = time it=20 near - like - when to launch?
David, you indicated you could go higher on = static if tied=20 down.  What is your max static rpm and manifold pressure.  The = reason=20 I asked is when Tracy and I got it sorted out when using the 2.17:1, we = could=20 normally get around 5200 rpm static with a 68x72 prop.  Your = elevation and=20 prop certain is a factor.
 
By the way, I upgraded my Rv-6A brakes and = rotors. =20 My rotor are twice the thickness of the normal Rv-6A rotor - this has = eliminated=20 brake fade, reduce brake pad wear, and has given a solid feel to the = brakes -=20 oh, yes, it stops quicker.  I always say its one thing if you can't = get=20 started - its an whole other ball game, if you can't get stopped=20 {:>)
 
Any idea when you plan on taking your bird=20 aloft??
 
Ed

From: hoursaway1@comcast.net
Sent: Sunday, June 19, 2011 10:52 AM
Subject: [FlyRotary] Re: Blower does work

RV6A, =20 1140#,  13B, RWS EC2, EM2, -B-drive 2.17 to 1 ?  with 20" = intake=20 runners,  home made Dynamic Chamber w/curved back,  3" = throttle-body=20 from 2000 Cadillac Deville Northstar  4.6L eng.,  exhaust = aprox. 2"=20 into  3" X 36" into Hushpower muff.,  standard Cleveland = brakes from=20 Vans Aircraft,  at 4700 rpm & aprox. 26 MAP,  I can not = hold the=20 aircraft from moving unless I tie it off to my truck & I can go = higher=20 in power.      David R. Cook   RV6A Rotary = (=20 transition training nearly complete,   I feel ready to go=20 ) 
----- Original Message -----
From: "Bill Bradburry"=20 <bbradburry@bellsouth.net>
To: "Rotary motors in aircraft"=20 <flyrotary@lancaironline.net>
Sent: Saturday, June 18, 2011 = 9:18:32=20 AM
Subject: [FlyRotary] Re: Blower does work

Hmmm!  = Unless your=20 blower is a restriction, the MAP will go to ambient pressure (100 Kp?) = if you go=20 to WOT.

 

If you fix = that prop so=20 that it is moving air, you need to look at some of the pictures of Tracy = when he=20 is running his engine!  Even his ears are pinned back!  = :>) =20  Think dog hanging our of a car window at 100 MPH.  Sorry=20 Tracy!!  :>)

You will need = to tie=20 that laptop down or it will be in the next county!

 

Bill=20 B

 

From: = Rotary motors=20 in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ernest = Christley
Sent: Friday, June 17, 2011 11:57 = PM
To: Rotary motors = in=20 aircraft
Subject: = [FlyRotary]=20 Re: Blower does work

 

On 06/17/2011 07:10 PM, Bill Bradburry wrote:=20

If the prop = load was=20 maxed out, the rpm would not increase, but the MAP could go up.  It = sounds,=20 tho, like this might not have been the case since Earnest felt the prop = was not=20 pulling.

 

Bill=20 B

 

First, the prop definitely was not pulling = with any=20 significance.  The most it could do was scare my wife, and blow = over a fan=20 that I had sitting on top of a 5-gallon bucket.  I'll fix that this = weekend.

Second, if the prop limits rpm, the MAP will not = continue to=20 increase.  The blower is tied to the prop with a 3.18 gear = ratio. =20 Since it won't turn any faster, it won't be able to raise the MAP any=20 further.

------=_NextPart_000_000D_01CC2E7B.A69F3AD0--