X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail05.syd.optusnet.com.au ([211.29.132.186] verified) by logan.com (CommuniGate Pro SMTP 5.2.7) with ESMTPS id 3117774 for flyrotary@lancaironline.net; Sat, 06 Sep 2008 21:46:11 -0400 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.186; envelope-from=lendich@optusnet.com.au Received: from george (d211-31-70-177.dsl.nsw.optusnet.com.au [211.31.70.177]) by mail05.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id m871jTFX008676 for ; Sun, 7 Sep 2008 11:45:30 +1000 Message-ID: <006901c9108b$6ca87e10$6400a8c0@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: New rotary engine-mazda points on design Date: Sun, 7 Sep 2008 11:45:35 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0066_01C910DF.3DAD9FB0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 X-Antivirus: avast! (VPS 080906-0, 06/09/2008), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0066_01C910DF.3DAD9FB0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable That's good feed back Ben. I have myself suggested the Bing selection = is not such a good one. I believe that some use Mikuni carbs as a = replacement. I also notice with the Jabiru supplied Bing there is no = leaning knob, perhaps their afraid of losing valves. The Jabiru supplied = carb kit was running very rich mixtures and only recently have they = offered replacement (and leaner) jets as a modification. I've flown a 4 seat Jabiru and the six cylinder is very strong and very = good climb performance. However I agree with the advice and so glad my = opinion is supported. However some claim the benefit of altitude = compensation, but I believe that's only good up to certain heights. I have been lucky enough to have recently worked on a RV 7 with the = Bendix type ( constant feed) fuel injection system - only 30 psi. It = looks simple enough and runs of a mechanical pump - can be run off an = electric pump as well, so I'm told. Thanks again for the comment. George (down under) George, A friend of mine is flying his Kitfox with a Jabiru 2200. He had some = trouble with his carburetor leaking and took it to the FBO. The guy = looked at it and told him they used to run the Bing carburetor on = motorcyles years ago and now throw them in the scrap pile. I think the = Jab is a great engine, however, EFI would make it sing like your Suzuki. Ben ----- Original Message -----=20 From: George Lendich=20 To: Rotary motors in aircraft=20 Sent: Saturday, September 06, 2008 5:50 PM Subject: [FlyRotary] Re: New rotary engine-mazda points on design Tracy, I must be missing a point somewhere, or we have crossed wires, as I = haven't mentioned the combustion chamber. My only concern is high = pressure fuel leak in flight. Don't get me wrong I like fuel injection = because of the control over injection volume and performance. I only = wish there was high pressure at the point of injection - only.=20 I have fuel injection on my Suzuki 1800 Motorbike and it's great, but = I would hate to have to work on it, like I did on the old carbied bike. I've noticed the Jabiru are running a very simple system. Their using = a Honda ignition module with an altitude compensating carby - not that = the system is perfect either. George ( down under) ------=_NextPart_000_0066_01C910DF.3DAD9FB0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 That's good feed back Ben. I have = myself=20 suggested the Bing selection is not such a good one. I believe = that=20 some use Mikuni carbs as a replacement. I also notice with the Jabiru = supplied=20 Bing there is no leaning knob, perhaps their afraid of losing valves. = The Jabiru=20 supplied carb kit was running very rich mixtures and only recently have = they=20 offered replacement (and leaner) jets as a modification.
 
I've flown a 4 seat Jabiru and the six = cylinder is=20 very strong and very good climb performance. However I agree with = the=20 advice and so glad my opinion is supported. However some claim the = benefit of=20 altitude compensation, but I believe that's only good up to certain=20 heights.
 
I have been lucky enough to have = recently worked on=20 a RV 7 with the Bendix type ( constant feed) fuel injection system - = only 30=20 psi. It looks simple enough and runs of a mechanical pump - can be run = off an=20 electric pump as well, so I'm told.
 
Thanks again for the = comment.
George (down under)
George,
A friend of = mine is=20 flying his Kitfox with a Jabiru 2200. He had some trouble with his = carburetor=20 leaking and took it to the FBO. The guy looked at it and told him they = used to=20 run the Bing carburetor on motorcyles years ago and now throw = them in the=20 scrap pile. I think the Jab is a great engine, however, EFI would make = it sing=20 like your Suzuki.
Ben
 
 
-----=20 Original Message -----
Sent:=20 Saturday, September 06, 2008 5:50 PM
Subject:=20 [FlyRotary] Re: New rotary engine-mazda points on design

Tracy,
I must be missing a point somewhere, or we have = crossed=20 wires, as I haven't mentioned the combustion chamber. My only concern = is high=20 pressure fuel leak in flight. Don't get me wrong I like fuel injection = because=20 of the control over injection volume and performance. I only wish = there was=20 high pressure at the point of injection - only.
 
I have fuel injection on my Suzuki 1800 = Motorbike and it's=20 great, but I would hate to have to work on it, like I did on the old = carbied=20 bike.
 
I've noticed the Jabiru are running a very = simple system.=20 Their using a Honda ignition module with an altitude compensating = carby -=20 not that the system is perfect either.
George ( down = under)
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