X-Virus-Scanned: clean according to Sophos on Logan.com From: "Stephen Izett" Received: from mail-pa0-f49.google.com ([209.85.220.49] verified) by logan.com (CommuniGate Pro SMTP 6.1.4) with ESMTPS id 7801690 for flyrotary@lancaironline.net; Sun, 28 Jun 2015 07:07:44 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.220.49; envelope-from=steveize@gmail.com Received: by pactm7 with SMTP id tm7so90396446pac.2 for ; Sun, 28 Jun 2015 04:07:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:content-type:message-id:mime-version:subject:date:references :to:in-reply-to; bh=xGBaWnZOUlL97ICqkn6+pyKBgJDRN95UHq6K9POeMIo=; b=i2FsQjObDZ1xKxYthnMorCtzAyjsXprwSdPpqkhBoiHY803bIGVyFWcG4O3+6FD8tr 6HeElxX2QEuMxH8qNWt6SbL6F+PJogb+LTfXKGGhUGyh2feb078olRU2Wyeg5ezS1s18 ezUyH/dYgOER+C85kGL+bOhTOzfTE4IIuERDUCRMOr+b8DCYuqRRpkHAceci5zbozowB NET/fBQJECVyQSouFwvfKGX8kH4kphA9mPVSk//FsJpVuFM7D6NjpsW3QLYe3bnFHcyE 2OU5e/qmjKZSi5MrSX3JpCYXq7fkHrYpnUfAn4v+XViAZGJZcsxLijwoY1JSvGd8YD9E iUsA== X-Received: by 10.70.38.170 with SMTP id h10mr20934713pdk.20.1435489628309; Sun, 28 Jun 2015 04:07:08 -0700 (PDT) Return-Path: Received: from [10.1.1.5] (106-68-204-104.dyn.iinet.net.au. [106.68.204.104]) by mx.google.com with ESMTPSA id zb14sm38976208pab.20.2015.06.28.04.07.04 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 28 Jun 2015 04:07:06 -0700 (PDT) X-Google-Original-From: Stephen Izett Content-Type: multipart/alternative; boundary="Apple-Mail=_DC00CB95-229D-4033-94E1-64375F84A4BD" Message-Id: <5159369A-44D3-4E1E-AE15-E951105312FE@icloud.com> Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2098\)) Subject: Re: [FlyRotary] West Aussie Rotary Date: Sun, 28 Jun 2015 19:06:41 +0800 References: To: Rotary motors in aircraft In-Reply-To: X-Mailer: Apple Mail (2.2098) --Apple-Mail=_DC00CB95-229D-4033-94E1-64375F84A4BD Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi there Andrew Sorry to here of your problems. What airport are you at? I=E2=80=99ll read with interest as you learn to tune your setup as we = have Tracy=E2=80=99s EC2 also with the 4 port. We are in the middle of painting. Wing is on stands in the hangar at = SABC serpentine waiting on the fuse to be painted and assembled. Hoping to start ground testing in about a month or two=E2=80=99s time. Cheers Steve Izett > On 28 Jun 2015, at 2:52 pm, Andrew Martin = wrote: >=20 >=20 >=20 > Take 2 without photo >=20 > Hi All >=20 > Over the last 6 weeks I've got my plane to the airport, assembled & = running. Now wouldn't it be great if it was just that easy. >=20 > Firstly I found when trying to start the engine, it didn't want to = start, everything made right noises but 0 fuel, I mean absolutely no = fuel would flow through any of the injectors, which annoyed me as they = only had about 10 min running time from a couple of years ago. Got them = cleaned & all good. >=20 > Almost every day since I've been trying to tune this thing. Seems easy = enough after re reading Tracy's manuals a couple more times, in practice = has been a bit of a pain, at each start it seems previous fuel map = settings were wrong, today I think I may have found the issue. > Fuel could be pooling in the intake runners at low rpm then creating a = rich situation as it is consumed. My intake runners are fairly short at = about 12", from the flange they are angled down about 1 dia then turn up = into the bottom of the plenum extending to the top. I thought this would = be ok as at flight rpm should be enough airflow to keep the fuel moving, = just to get to flight rpm! >=20 > Have managed some high rpm runs after tying the plane down, get to = about 7200rpm before oil temp and blistering paint on the cowl stops = play pretty quick. Seems to happen too quick to write down all temps & = pressures but coolant seems to max out at about 180 oil just keeps = climbing at anything more than about 4000 rpm but can get it below 200 = after idling. >=20 > So me thinks, need to set higher minimum pitch on prop, maybe a oil to = coolant heat exchanger, maybe something similar to what Tracy done early = on, in the oil pan on his rv4. Some heat shielding on cowl, Then wait = until all pooled fuel is gone each time before trying to tune. >=20 > Engine is a 4 port Renesis, heat exchangers are against the firewall = with cool air ducted from just under the spinner, under the motor then = up the firewall. hot air exits on top front of cowl. Other than the oil = temp seems to work quite well, heat exchangers share air but coolant one = might be getting more than it should. >=20 > Fun times. >=20 > Andrew >=20 >=20 > --=20 > Regards > Andrew Martin > Martin Ag --Apple-Mail=_DC00CB95-229D-4033-94E1-64375F84A4BD Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hi there Andrew
Sorry to here of your = problems.
What airport are you at?
I=E2=80=99ll read with interest as you learn to tune your = setup as we have Tracy=E2=80=99s EC2 also with the 4 port.

We are in the middle of = painting. Wing is on stands in the hangar at SABC serpentine waiting on = the fuse to be painted and assembled.
Hoping to = start ground testing in about a month or two=E2=80=99s time.

Cheers

Steve Izett

On 28 Jun 2015, at 2:52 pm, = Andrew Martin <flyrotary@lancaironline.net> wrote:



Take 2 without photo

Hi All

Over the last 6 weeks I've got my plane to the airport, = assembled & running.  Now wouldn't it be great if it was just = that easy.

Firstly I found when trying to start the engine, it didn't = want to start, everything made right noises but 0 fuel, I mean = absolutely no fuel would flow through any of the injectors, which = annoyed me as they only had about 10 min running time from a couple = of years ago. Got them cleaned & all good.

Almost every day since I've been trying = to tune this thing. Seems easy enough after re reading Tracy's manuals a = couple more times, in practice has been a bit of a pain, at each start = it seems previous fuel map settings were wrong, today I think I may = have found the issue.
Fuel could be pooling in the = intake runners at low rpm then creating a rich situation as it is = consumed. My intake runners are fairly short at about 12", from the = flange they are angled down about 1 dia then turn up into the = bottom of the plenum extending to the top. I thought this would be ok as = at flight rpm should be enough airflow to keep the fuel moving, just to = get to flight rpm!

Have managed some high rpm runs after tying the = plane down, get to about 7200rpm before oil temp and = blistering paint on the cowl stops play pretty quick. Seems to happen = too quick to write down all temps & pressures but coolant seems to = max out at about 180 oil just keeps climbing at anything more than about = 4000 rpm but can get it below 200 after idling.

So me thinks, need to set higher = minimum pitch on prop, maybe a oil to coolant heat exchanger, maybe = something similar to what Tracy done early on, in the oil = pan on his rv4. Some heat shielding on cowl, Then wait until = all pooled fuel is gone each time before trying to tune.

Engine is a 4 port = Renesis, heat exchangers are against the firewall with cool air ducted = from just under the spinner, under the motor then up the = firewall. hot air exits on top front of cowl. Other than the oil = temp seems to work quite well, heat exchangers share air but = coolant one might be getting more than it should.
Fun times.

Andrew


--
Regards
Andrew Martin
Martin = Ag

= --Apple-Mail=_DC00CB95-229D-4033-94E1-64375F84A4BD--