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 5.3.9) with ESMTP id 4463945 for flyrotary@lancaironline.net; Sun, 12 Sep 2010 08:52:39 -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=p2+AJtORPCqgiIb1GLnEzM38JG/9906BinLiWeI6YUU= c=1 sm=0 a=rPkcCx1H5rrOSfN0dPC7kw==:17 a=3oc9M9_CAAAA:8 a=3pEYZTt1rL4WwohmBZEA:9 a=f4WdTtmtkffjPcWZpOQA:7 a=6rkoDXJ2VtJSHluEjXMYU0hq1y0A:4 a=wPNLvfGTeEIA:10 a=U8Ie8EnqySEA:10 a=rW7xwdcprNVdZAzP:21 a=3-hrVwBGNU7NrrVz:21 a=Ia-xEzejAAAA:8 a=rc9iDDNXncCTt2ToEJwA:9 a=u88mX8b6EoH1R70bpK0A:7 a=iwwrPwrxVGA5gR_aUXsX42lZC8QA:4 a=EzXvWhQp4_cA:10 a=rPkcCx1H5rrOSfN0dPC7kw==:117 X-Cloudmark-Score: 0 X-Originating-IP: 174.110.167.5 Received: from [174.110.167.5] ([174.110.167.5:62311] helo=EdPC) by cdptpa-oedge02.mail.rr.com (envelope-from ) (ecelerity 2.2.2.39 r()) with ESMTP id B8/33-06845-2FCCC8C4; Sun, 12 Sep 2010 12:52:02 +0000 Message-ID: <6063A0120BD44636ABA746579A849F5C@EdPC> From: "Ed Anderson" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] First flight Date: Sun, 12 Sep 2010 08:52:02 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002C_01CB5257.C4BAF410" 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_002C_01CB5257.C4BAF410 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Congratulations, Brian on a successful first flight. The most frequent (but not sole) cause of low power is air flow and/or = low air/fuel ratio. Its fairly easy to add more fuel (mixture knob), = but not as easy to get more air into the engine. Easy way to tell the effect of your filter is manifold pressure. See = what it is at WOT with and without filter. If not more than 1/2" Hg = pressure difference then the filter is not having much effect. If the = filter is having an overly adverse effect then manifold pressure should = be less (and rpm also). As Tracy pointed out (at least for us early guys) it generally took us a = while to get it all sorted out, but you'll get there. Ed From: Bktrub@aol.com=20 Sent: Saturday, September 11, 2010 10:51 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] First flight RV-4 #2366, tail # N52BT made it's first flight today. It didn't make = enough power , so only one lap of the traffic pattern was made before = the pilot landed it. From a standpoint of flying qualities, it was just = like any other RV-4s- no out of trim conditions or other bad habits. No = note was made of MP at WOT, either on the ground or in the air, that's = first on the agenda tomorrow.=20 But-- I only revved up to 4800 rpm on the downwind, so the flight was = terminated. I have gotten 5500 on the ground with the cowl removed, = which means the air cleaner was not in use. I am using a Fram paper = filter, 6 inches by 14 inches. I think I am getting a big restriction = from it, so I will remove it and try some ground runs. I also think I'm = running way too rich, about 34- 7/8s up the scale on my EM2. The good news is that neither the oil or coolant temps got over 160 the = whole time, and the plane was waiting on the ground for around 15 = minutes due to traffic in the pattern prior to the flight.=20 So, I'm happy about the flight, but now must find out why I'm not making = more umph.=20 Brian Trubee ------=_NextPart_000_002C_01CB5257.C4BAF410 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 Congratulations, Brian on a successful first=20 flight.
 
The most frequent (but not sole) cause of = low power=20 is air flow and/or low air/fuel ratio.  Its fairly easy to add more = fuel=20 (mixture knob), but not as easy to get more air into the = engine.
 
Easy way to tell the effect of your filter is = manifold=20 pressure.  See what it is at WOT with and without filter.  If = not more=20 than 1/2" Hg pressure difference then the filter is not having much=20 effect.  If the filter is having an overly adverse effect then = manifold=20 pressure should be less (and rpm also).
 
As Tracy pointed out (at least for us early guys) it = generally=20 took us a while to get it all sorted out, but you'll get = there.
 
Ed

Sent: Saturday, September 11, 2010 10:51 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] First flight

RV-4 #2366, tail # N52BT made it's first flight today. It didn't = make=20 enough power , so only one lap of the traffic pattern was made before = the pilot=20 landed it. From a standpoint of flying qualities, it was just like any = other=20 RV-4s- no out of trim conditions or other bad habits. No note was made = of MP at=20 WOT, either on the ground or in the air, that's first on the agenda = tomorrow.=20
 
But-- I only revved up to 4800 rpm on the downwind, so the flight = was=20 terminated. I have gotten 5500 on the ground with the cowl removed, = which means=20 the air cleaner was not in use. I am using a Fram paper filter, 6 inches = by 14=20 inches. I think I am getting a big restriction from it, so I will remove = it and=20 try some ground runs. I also think I'm running way too rich, about 34- = 7/8s up=20 the scale on my EM2.
 
The good news is that neither the oil or coolant temps got over 160 = the=20 whole time, and the plane was waiting on the ground  for = around  15=20 minutes due to traffic in the pattern prior to the flight.
 
So, I'm happy about the flight, but now must find out why I'm not = making=20 more umph.
 
Brian Trubee
 ------=_NextPart_000_002C_01CB5257.C4BAF410--