X-Virus-Scanned: clean according to Sophos on Logan.com From: "Charlie England" Received: from mail-yk0-f180.google.com ([209.85.160.180] verified) by logan.com (CommuniGate Pro SMTP 6.1.4) with ESMTPS id 7802062 for flyrotary@lancaironline.net; Sun, 28 Jun 2015 11:36:45 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.160.180; envelope-from=ceengland7@gmail.com Received: by ykdt186 with SMTP id t186so96095917ykd.0 for ; Sun, 28 Jun 2015 08:36:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=ZnNi5OE4rd/EHPqbtq2EzFBXS16GBMaGMgusqLiF7vw=; b=rilAfnHcKu5aXnqyoz2oLWLua42eoGJQiMq/WN9u0qOvF0Dd4nvyBuwEn84sm0JjBt QVqIrPKIosrn07ikv1k8j8BYM0eLgeGZrdQ53KrYqbWMkPuFUuMTU/rXfYsbuNsycfML jTHpCGcqgbTQEIbzIK7nOUo/WpKFEnwfkifpf+X8wUANimJSNgBbQj7pQOIFWHLCX/3n 2wYgBO2XQPMXS8XuWWyKaVKAuP3Gp+E48UM2QW4zj7PsPqBgyqZt/63CRfyynj3sADu4 5jZr14OemdL6nHTKaUbirThZZLwvOSyKRUpfa9cTDktT1byrz2RMvlT8hc0drIlNNbrk llvQ== MIME-Version: 1.0 X-Received: by 10.129.98.198 with SMTP id w189mr5496776ywb.32.1435505770915; Sun, 28 Jun 2015 08:36:10 -0700 (PDT) Received: by 10.13.232.213 with HTTP; Sun, 28 Jun 2015 08:36:10 -0700 (PDT) In-Reply-To: References: Date: Sun, 28 Jun 2015 10:36:10 -0500 Message-ID: Subject: Re: [FlyRotary] West Aussie Rotary To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=001a114713b88c6c36051995bb43 --001a114713b88c6c36051995bb43 Content-Type: text/plain; charset=UTF-8 On Sun, Jun 28, 2015 at 1:52 AM, Andrew Martin 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 >> > > Hi Andrew, Good to hear that another rotary is 'close' (to flying). I noticed the 1st line 'without photo'. Did earlier attempts bounce? I think the message size, including attachments, is around 200KB. Try resizing the image to 150K or smaller. If you need help resizing, let us know. There's a plugin for Win XP that makes it very easy; Win7/8 is a bit more convoluted but not that hard. I for one would love to see as many pics as you have time to send. Please help those of us who are memory challenged & let us know which airframe. Runner length shouldn't be an issue (I hope it isn't; that's about the length of mine), since Tracy's Renesis uses intakes about that long. Charlie --001a114713b88c6c36051995bb43 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable


On Sun, Jun 28, 2015 at 1:52 AM, Andrew Martin <flyrotary@la= ncaironline.net> wrote:


Take 2 wi= thout photo

Hi All

Over the last 6 weeks I've got my plane to the airport, assembled &am= p; running.=C2=A0 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 a= bsolutely no fuel would flow through any of the injectors, which annoyed me= as they only had=C2=A0about 10 min running time from a couple of years ago= . Got them cleaned & all good.

Almost every da= y 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 bi= t of a pain, at each start it seems previous fuel=C2=A0map settings were wr= ong, today I think I may have found the issue.
Fuel could be pool= ing in the intake runners=C2=A0at 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=C2=A0into the bot= tom of the plenum extending to the top. I thought this would be ok as at fl= ight rpm should be enough airflow to keep the fuel moving, just to get to f= light rpm!

Have managed some high=C2=A0rpm runs=C2= =A0after tying the plane down,=C2=A0get to=C2=A0about 7200rpm before oil te= mp and blistering paint on the cowl stops play pretty quick. Seems to happe= n too quick to write down all temps & pressures but coolant seems to ma= x 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 he= at exchanger, maybe something similar to what Tracy done early on,=C2=A0in = the oil pan=C2=A0on his rv4. Some heat shielding on cowl,=C2=A0Then wait un= til all pooled fuel is gone each time=C2=A0before 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.=C2=A0hot air exits on top front of cowl. Other than = the oil temp seems to work quite well, heat exchangers=C2=A0share air but c= oolant one might be getting more than it should.

F= un times.

Andrew

Hi Andrew,=C2=A0

Goo= d to hear that another rotary is 'close' (to flying). I noticed the= 1st line 'without photo'. Did earlier attempts bounce? I think the= message size, including attachments, is around 200KB. Try resizing the ima= ge to 150K or smaller. If you need help resizing, let us know. There's = a plugin for Win XP that makes it very easy; Win7/8 is a bit more convolute= d but not that hard. I for one would love to see as many pics as you have t= ime to send.=C2=A0

Please help those of us who are= memory challenged & let us know which airframe. Runner length shouldn&= #39;t be an issue (I hope it isn't; that's about the length of mine= ), since Tracy's Renesis uses intakes about that long.

Charlie=C2=A0

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