Return-Path: <13brv3@bellsouth.net> Received: from imf06aec.mail.bellsouth.net ([205.152.59.54] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3074961 for flyrotary@lancaironline.net; Thu, 11 Mar 2004 22:02:23 -0500 Received: from rad ([68.221.170.244]) by imf24aec.mail.bellsouth.net (InterMail vM.5.01.06.08 201-253-122-130-108-20031117) with ESMTP id <20040312022013.CDNJ18468.imf24aec.mail.bellsouth.net@rad> for ; Thu, 11 Mar 2004 21:20:13 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: EMU in the wild Date: Thu, 11 Mar 2004 20:18:14 -0600 Message-ID: <013a01c407d8$4635d540$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_013B_01C407A5.FB9B6540" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_013B_01C407A5.FB9B6540 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable while there should be no issue in using this for the P2 connector it = isn't really all that necessary as those points are for fixed sensors that = won't be moved. P1 is where it would be really handy, as some of those 8 T/C's will be moved to various locations for various tests and running T/C extension wire back to the EMU will be somewhat of a pain. =20 =20 Hi Todd, =20 I concur with everything you said. I also wanted the terminal block for = the T/C inputs, but realized in talking to Tracy that it would probably introduce too much error. =20 =20 What I did instead, was solder 4- 8 foot long sections of T/C wire from = the P1 connector on the bench. I used the smallest, stranded wire I could = get, but it still sucked. The ends of these pairs are twisted tightly, and soldered to make a probe (Tracy's idea, and it works). These are long enough to reach anything I might need to test, and coil up into about a = 5" diameter coil when not in use. The plan is to just leave them coiled up = on the firewall side, unless I have them deployed for some measurement = task. With all the acreage you have under your cowl, I'm sure you can find a = spot to store these also. =20 =20 Unfortunately, the EGT probes that I have are the clamp type, which = means you would have to have a large hole to get the clamp through the = firewall. Since these have to be run from the firewall aft, I couldn't solder them = on the bench. =20 =20 In liquid temp news, make note that there's a definite trick to making = the liquid temp 2 and 3 inputs work. It was a little more involved than = Tracy's original answer yesterday :-) =20 =20 BTW- Tracy, I told you that I didn't bring out any of the extra 5V = wires, but that was wrong. I had only intended to bring out a foot of the = extra sensors, and grounds, so I could put ring terminals on them and tie them = to the ground stud on the chassis. When I went to ground these extra = wires, I noticed that there seemed to be too many. Sure enough, I ran ALL the = wires out, including the 5V wires. Fortunately, I didn't ground them. Unfortunately, I didn't figure this out until I had used my OAT 5V line = for the OAT, and both aux liquid sensors. Sure had a lot of 5V wires I = could have used... Thanks again for the phone support. =20 =20 The EM-2 is completely installed, and all sensors seem to be working. I = can probably spend a whole day playing with the programming, but that won't = be next on the list. I still have a few wiring tasks to do, then I get to = make more hoses. Still, I should be running again this weekend. =20 Cheers, Rusty (The EMU slayer... mind you EMU bites can be pretty nasty ) =20 =20 PS- The area between my instrument panel and firewall is completely full = of wires now. I continue to be amused when I think that I originally = bought a 5 gallon header tank to put in that space, "because there wouldn't be anything else there". =20 =20 =20 ------=_NextPart_000_013B_01C407A5.FB9B6540 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
while there should be no issue in = using this=20 for the P2 connector it isn't really all that necessary as those points = are for=20 fixed sensors that won't be moved. P1 is where it would be really handy, = as some=20 of those 8 T/C's will be moved to various locations for various tests = and=20 running T/C extension wire back to the EMU will be somewhat of a=20 pain.  
 
Hi Todd,
 
I concur with everything you said.  I also = wanted the=20 terminal block for the T/C inputs, but realized in talking to = Tracy=20 that it would probably introduce too much error. =20
 
What I did instead, was solder 4- 8 foot = long sections=20 of T/C wire from the P1 connector on the bench.  I used the = smallest,=20 stranded wire I could get, but it still sucked.  The ends of = these=20 pairs are twisted tightly, and soldered to make a probe (Tracy's idea, = and it=20 works).  These are long enough to reach anything I might need to = test, and=20 coil up into about a 5" diameter coil when not in use.  The plan is = to just=20 leave them coiled up on the firewall side, unless I have them deployed = for some=20 measurement task.  With all the acreage you have under your cowl, = I'm sure=20 you can find a spot to store these also. =20
 
Unfortunately, the EGT probes that I have are = the clamp=20 type, which means you would have to have a large hole to get the = clamp=20 through the firewall.  Since these have to be run from the firewall = aft, I=20 couldn't solder them on the=20 bench.   
 
In liquid temp news, make note that there's a = definite=20 trick to making the liquid temp 2 and 3 inputs work.  It was a = little=20 more involved than Tracy's original answer yesterday :-)  =20
 
BTW- Tracy, I told you that I didn't bring = out any of=20 the extra 5V wires, but that was wrong.  I had only intended = to bring=20 out a foot of the extra sensors, and grounds, so I could put ring = terminals on=20 them and tie them to the ground stud on the chassis.   When I = went to=20 ground these extra wires, I noticed that there seemed to be too = many.  Sure=20 enough, I ran ALL the wires out, including the 5V wires.  = Fortunately,=20 I didn't ground them.  Unfortunately, I didn't figure this out = until I=20 had used my OAT 5V line for the OAT, and both aux liquid = sensors. =20 Sure had a lot of 5V wires I could have used...  Thanks again = for the=20 phone support. 
 
The EM-2 is completely installed, and all = sensors seem to=20 be working.  I can probably spend a whole day playing with the = programming, but that won't be next on the list.  I still have a = few wiring=20 tasks to do, then I get to make more hoses.  Still, I should be = running=20 again this weekend.
 
Cheers,
Rusty (The EMU slayer... mind you EMU bites can = be pretty=20 nasty <g>)
 
 
PS- The area between my instrument panel and = firewall is=20 completely full of wires now.  I continue to be amused when I think = that I=20 originally bought a 5 gallon header tank to put in that space, = "because=20 there wouldn't be anything else=20 there".  
 
 
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