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X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 5.0.6) with ESMTP id 910045 for flyrotary@lancaironline.net; Mon, 02 Jan 2006 00:24:34 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.71; envelope-from=13brv3@bellsouth.net Received: from ibm66aec.bellsouth.net ([65.6.194.9]) by imf23aec.mail.bellsouth.net with ESMTP id <20060102052348.JOCW2507.imf23aec.mail.bellsouth.net@ibm66aec.bellsouth.net> for ; Mon, 2 Jan 2006 00:23:48 -0500 Received: from rd ([65.6.194.9]) by ibm66aec.bellsouth.net with ESMTP id <20060102052347.RDCC19353.ibm66aec.bellsouth.net@rd> for ; Mon, 2 Jan 2006 00:23:47 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Single rotor running- Tracy questions Date: Sun, 1 Jan 2006 23:23:48 -0600 Message-ID: <000001c60f5c$b5c089e0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C60F2A.6B2619E0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C60F2A.6B2619E0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Glad to hear the initial run problems did not turn out to be systemic. =20 =20 Hi Tracy, =20 I was pretty depressed when I thought the drive was going to be = unworkable. I still suspect there will have to be some modification done on the dampeners, but it's hard to say if it's a real limitation yet. =20 =20 The only thing that comes to mind that can completely disable the A controller is if the +5 line to the air temp sensor gets shorted to = ground (this has happened to one builder). B is not affected because it does = not use the air temp sensor and its +5 supply is independent. The latest version of the EC2 does not send +5 to the sensor so this failure mode = was eliminated. I don't know which version you have. If the instructions = show +5 on pin 11 going to air temp sensor it is earlier model, if it shows = pin 1 (ground) instead, it is the later version. =20 =20 You lost me on the last sentence. My instructions (which I'd still = rather have in electronic format) show pin 11 as "Temperature sensor power = (Vcc)". They also show pin 1 as "ground connection". Did you mean to say pin 11 = as ground would be the later version? =20 Always possible that there is a hardware problem with A, but not likely. = =20 Agreed. No reason to worry at this point. I'll just keep an eye on it. = =20 =20 The alternate map table load (with cold start on) is still active. = Don't know why it is not in the instructions unless I deleted it after the = latest updates to the algorithms which made that pre-load option mostly un-necessary (how's that for an ambiguous answer?) What injectors are = you running?=20 =20 You can look for yourself in the instructions, since you probably = remember where the alternate map instructions were located. I skimmed through it = a couple times, and didn't see it. I've thrown away all my old = instructions to limit confusion with the newer software, but I had some notes written down for use in the cockpit while tuning. =20 =20 The injectors are 38 lb/hr, high impedance MSD units. Same as what I = was last using on the RV-3. =20 =20 Tracy (mounting coils on 20B)=20 =20 Planning to fry these too :-) =20 Cheers, Rusty (planning to fly my RV-8 by the end of the Summer) =20 =20 ------=_NextPart_000_0001_01C60F2A.6B2619E0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Glad to hear the initial run problems did not turn out to be=20 systemic.

Hi=20 Tracy,

I was=20 pretty depressed when I thought the drive was going to be = unworkable. =20 I still suspect there will have to be some modification done on the = dampeners,=20 but it's hard to say if it's a real limitation yet. =20

The only thing that comes to mind that can completely disable = the A=20 controller is if the +5 line to the air temp sensor gets shorted to = ground (this=20 has happened to one builder). B is not affected because it does = not use=20 the air temp sensor and its +5 supply is independent. The = latest=20 version of the EC2 does not send +5 to the sensor so this failure mode = was=20 eliminated. I don't know which version you have. If the = instructions=20 show +5 on pin 11 going to air temp sensor it is earlier model, if = it shows=20 pin 1 (ground) instead, it is the later version.

You=20 lost me on the last sentence. My instructions (which I'd still = rather have=20 in electronic format) show pin 11 as "Temperature sensor power = (Vcc)". =20 They also show pin 1 as "ground connection". Did you mean to = say pin=20 11 as ground would be the later version?

Always possible that there is a hardware problem with A, = but not=20 likely.

Agreed. No reason to worry at this point. I'll just = keep an=20 eye on it.

The alternate map table load (with cold start on) is still = active. =20 Don't know why it is not in the instructions unless I deleted it after = the=20 latest updates to the algorithms which made that pre-load option mostly=20 un-necessary (how's that for an ambiguous answer?) What injectors = are you=20 running?

You=20 can look for yourself in the instructions, since you probably remember = where the=20 alternate map instructions were located. I skimmed through it a = couple=20 times, and didn't see it. I've thrown away all my old = instructions to=20 limit confusion with the newer software, but I had some = notes=20 written down for use in the cockpit while=20 tuning.

The=20 injectors are 38 lb/hr, high impedance MSD units. Same as what I = was last=20 using on the RV-3.

Tracy (mounting coils on 20B)

Planning to fry these too :-)

Cheers,

Rusty=20 (planning to fly my RV-8 by the end of the Summer)

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