Return-Path: Received: from mailout2.pacific.net.au ([61.8.0.85] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 577347 for flyrotary@lancaironline.net; Wed, 22 Dec 2004 17:19:34 -0500 Received-SPF: none receiver=logan.com; client-ip=61.8.0.85; envelope-from=peon@pacific.net.au Received: from mailproxy2.pacific.net.au (mailproxy2.pacific.net.au [61.8.0.87]) by mailout2.pacific.net.au (8.12.3/8.12.3/Debian-7.1) with ESMTP id iBMMJ3KP003280 for ; Thu, 23 Dec 2004 09:19:03 +1100 Received: from ar1 (ppp27A1.dyn.pacific.net.au [61.8.39.161]) by mailproxy2.pacific.net.au (8.12.3/8.12.3/Debian-7.1) with SMTP id iBMMJ0DY007907 for ; Thu, 23 Dec 2004 09:19:01 +1100 Message-ID: <002201c4e874$34f8fdc0$a127083d@ar1> From: "Leon" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] MicroTech? Date: Thu, 23 Dec 2004 09:18:45 +1100 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001F_01C4E8D0.67628D10" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 This is a multi-part message in MIME format. ------=_NextPart_000_001F_01C4E8D0.67628D10 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageYair Rusty, No closed loop on the Microtech! These are 1000 buck computers not 4000 = buck computers. The Motec M800 and Autronic SM-2 units do closed loop. = The Autronic actually has a closed loop self tuning function that works = on the cheaper $2000 SMC unit as well. =20 If you use a good quality Lambda sensor, they can cop a bit of lead for = a while. Alternatively, you just take with you a pocket full cheap = single wire sensors. I normally use a Bosch 4 wire unit to do the = tuning, and then remove it altogether and just plug off the hole. =20 With the insto I'm planning, I'll have 2 of the cheaper Autronic SMC = units. They are about 1800 AUD each. This gives me total ignition and = fuel redundancy, and there is sufficent room in the memory to put the = "Auto Tune" software on one, and still have all the other optional = functions on the other. This will mean that I can use a Bosch 4 wire Lambda sensor for fine = tuning. I have no experience with 100LL so I will just have to see how = it effects the Lambda Sensor. I know that with the race cars here in = Oz, they do have lead resistant Lambda sensors, but in the scheme of = things with a touring car worth maybe a quarter of a million or more, = maybe a $400 sensor is just beer money each meeting. Anyway, I'll have to get hold of a drum of 100LL soon as I will have = the REW engine ready for testing by the end of January. Same goes for = the RX8 Wunlunga. Just have to finish the porting and I'll slap her = together and chuck it in the Mule over Xmas/New Year. Cheers, Leon ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Wednesday, December 22, 2004 1:17 PM Subject: [FlyRotary] MicroTech? Greetings, I was thinking about Paul's MicroTech, and wondered if it runs in = closed loop mode, such that it uses the O2 sensor for mixture control. = If it does, then what will happen when leaded fuel is used, and the O2 = sensor becomes slow to respond? I'm guessing that Dave Atkins flew his = with the same computer, and he did enough cross country to be forced to = use 100LL. Probably it's not an issue, but I just thought I'd throw it = out as something to think about. =20 Cheers, Rusty (lots to do, but nothing to do it with) ------=_NextPart_000_001F_01C4E8D0.67628D10 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Yair Rusty,
 
No closed loop on the Microtech!  = These are=20 1000 buck computers not 4000 buck computers.  The Motec M800 and = Autronic=20 SM-2 units do closed loop.  The Autronic actually has a closed loop = self=20 tuning function that works on the cheaper $2000 SMC unit as well. =20
 
If you use a good quality Lambda = sensor,  they=20 can cop a bit of lead for a while.  Alternatively,  you just = take with=20 you a pocket full cheap single wire sensors.  I normally use a Bosch 4 wire unit to do the tuning,  and = then=20 remove it altogether  and just plug off the hole.  =
 
With the insto I'm planning,  I'll = have 2 of=20 the cheaper Autronic SMC units.  They are about 1800 AUD = each.  This=20 gives me total ignition and fuel redundancy,  and there is = sufficent room=20 in the memory to put the "Auto Tune" software on one,  and still = have all=20 the other optional functions on the other.
 
This will mean that I can use a Bosch 4 = wire Lambda=20 sensor for fine tuning.  I have no experience with 100LL so I will = just=20 have to see how it effects the Lambda Sensor.  I know that with the = race=20 cars here in Oz,  they do have lead resistant Lambda sensors,  = but in=20 the scheme of things with a touring car worth maybe a quarter of a = million or=20 more,  maybe a $400 sensor is just beer money each = meeting.
 
Anyway,  I'll have to get hold of = a drum of=20 100LL soon as I will have the REW engine ready for testing by the end of = January.  Same goes for the RX8 Wunlunga.  Just have to finish = the=20 porting and I'll slap her together and chuck it in the Mule over = Xmas/New=20 Year.
 
Cheers,
 
Leon
----- Original Message -----
From:=20 Russell=20 Duffy
Sent: Wednesday, December 22, = 2004 1:17=20 PM
Subject: [FlyRotary] = MicroTech?

Greetings,
 
I was = thinking about=20 Paul's MicroTech, and wondered if it runs in closed loop mode, such = that it=20 uses the O2 sensor for mixture control.  If it does, then what = will=20 happen when leaded fuel is used, and the O2 sensor becomes slow to=20 respond?  I'm guessing that Dave Atkins flew his with the same = computer,=20 and he did enough cross country to be forced to use 100LL.  = Probably it's=20 not an issue, but I just thought I'd throw it out as something to = think=20 about. 
 
Cheers,
Rusty (lots = to do, but=20 nothing to do it with)
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