X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qmta01.emeryville.ca.mail.comcast.net ([76.96.30.16] verified) by logan.com (CommuniGate Pro SMTP 5.4c2) with ESMTP id 4933767 for flyrotary@lancaironline.net; Tue, 05 Apr 2011 17:27:29 -0400 Received-SPF: error receiver=logan.com; client-ip=76.96.30.16; envelope-from=gregw@onestopdesign.biz Received: from omta18.emeryville.ca.mail.comcast.net ([76.96.30.74]) by qmta01.emeryville.ca.mail.comcast.net with comcast id Twi91g0011bwxycA1xStKZ; Tue, 05 Apr 2011 21:26:53 +0000 Received: from gregiv ([24.6.73.102]) by omta18.emeryville.ca.mail.comcast.net with comcast id TxSs1g0132CQjog8exSt3Z; Tue, 05 Apr 2011 21:26:53 +0000 Message-ID: From: "Greg Ward" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Tracy RV-8 Questions Date: Tue, 5 Apr 2011 14:35:15 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_10D5_01CBF39E.ADA587C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5994 This is a multi-part message in MIME format. ------=_NextPart_000_10D5_01CBF39E.ADA587C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Tracy; Pictures, videos, specs, Please...... Greg Ward Legacy N178RG still in progress..... ----- Original Message -----=20 From: Tracy=20 To: Rotary motors in aircraft=20 Sent: Tuesday, April 05, 2011 9:21 AM Subject: [FlyRotary] Re: Tracy RV-8 Questions Hi Doug, I have 48 hours on the RV-8 but almost all of them done on short = test flights while working out various development problems so I have = never done tests on the intended use of the airplane (long distance = cruise at high altitude).=20 The most interesting thing (to me anyway) is that the fuel burn at = low altitude is virtually identical at the same speeds as the RV4 with a = Renesis. This is partly due to the longer wing and the high pitch prop = which makes the engine rpm 1000 rpm lower than the -4 at the same speed. = =20 I haven't done formal glide ratio tests but it is very obvious that = it's significantly better than the -4, also due to the longer wing. I = thought the stall speed was much lower too but my previous statement = about it being down to 45 mph was due to a bad air speed sensor in the = Bluemountain EFIS. It's really closer to 50. Top speed is airframe = limited at 230 mph. That's reached at around 25" MP. Cooling is working OK and when I install the bellmouth inlet rings on = the inlets I think it will be in final form. Right now I have what = amounts to 5" pitot tubes sticking out of the cowl for inlets. Not = good at high angle of attack in climb. Climb at solo flight & 1/2 fuel = is around 3750 fpm. Seat of the pants impression: One hell of a fun airplane to fly. Tracy=20 On Mon, Apr 4, 2011 at 6:27 AM, wrote: Tracy if you get a chance would mind taking a minute to post the = latest news on your RV-8 20B? I know I am curious about your cruise = numbers and fuel burn and also what your feelings are about it's = handling and overall performance based on the extended wing you put on = it. Also, do you have the cooling system tweaked now where you like it = or are there further gains to had / made? Take care, Doug Lomheim RV-9A / FWF / Electrical / Canopy Hope to resume work by mid - May. ------=_NextPart_000_10D5_01CBF39E.ADA587C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Tracy;
Pictures, videos, specs, = Please......
Greg Ward
Legacy N178RG still in=20 progress.....
----- Original Message -----
From:=20 Tracy
Sent: Tuesday, April 05, 2011 = 9:21=20 AM
Subject: [FlyRotary] Re: Tracy = RV-8=20 Questions

Hi Doug,
    I have 48 hours on the = RV-8 but=20 almost all of them done on short test flights while working out = various=20 development problems so I have never done tests on the intended use of = the=20 airplane (long distance cruise at high altitude).

  The = most=20 interesting thing (to me anyway) is that the fuel burn at low altitude = is=20 virtually identical at the same speeds as the RV4 with a = Renesis.  =20 This is partly due to the longer wing and the high pitch prop which = makes the=20 engine rpm 1000 rpm lower than the -4 at the same speed.  =

I=20 haven't done formal glide ratio tests but it is very obvious that it's = significantly better than the -4, also due to the longer wing.  I = thought=20 the stall speed was much lower too but my previous statement about it = being=20 down to 45 mph was due to a bad air speed sensor in the Bluemountain=20 EFIS.  It's really closer to 50.   Top speed is = airframe=20 limited at 230 mph.  That's reached at around 25" = MP.

Cooling is=20 working OK and when I install the bellmouth inlet rings on the inlets = I think=20 it will be in final form.   Right now I have what amounts to = 5"=20 pitot tubes sticking out of the cowl for inlets.   Not good = at high=20 angle of attack in climb.   Climb at solo flight & 1/2 = fuel is=20 around 3750 fpm.

Seat of the pants impression:   One = hell of=20 a fun airplane to fly.

Tracy

On Mon, Apr 4, 2011 at 6:27 AM, <dlomheim@aol.com> = wrote:
Tracy if you get a chance would mind taking a minute to post = the latest=20 news on your RV-8 20B?  I know I am curious about your cruise = numbers=20 and fuel burn and also what your feelings are about it's handling = and=20 overall performance based on the extended wing you put on it.  = Also, do=20 you have the cooling system tweaked now where you like it or are = there=20 further gains to had / made?
 
Take care,
 
Doug Lomheim
RV-9A / FWF / Electrical / Canopy
 
Hope to resume work by mid - May.


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