Return-Path: <13brv3@bellsouth.net> Received: from imf25aec.mail.bellsouth.net ([205.152.59.73] verified) by logan.com (CommuniGate Pro SMTP 4.1.3) with ESMTP id 2588269 for flyrotary@lancaironline.net; Sun, 21 Sep 2003 19:31:41 -0400 Received: from rad ([68.212.12.251]) by imf25aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20030921233138.JCVE10992.imf25aec.mail.bellsouth.net@rad> for ; Sun, 21 Sep 2003 19:31:38 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Measured intake temps after turbo Date: Sun, 21 Sep 2003 18:31:40 -0500 Message-ID: <004401c38098$82452620$0201a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0045_01C3806E.996F1E20" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0045_01C3806E.996F1E20 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable The FD manuals give an intake air temp limit, and indeed have a temp = (and pressure) sensor located there! Read your manuals for your turbo engine model you have!! My twin turbo temp sensor has an upper test limit of = 176F, so beware things much over that!=20 The only thing I see is the 176F test point that you mentioned. I would have to agree that they don't expect you to run that high, but I've seen = no "limit" listed anywhere. The circuitry logic will retard the timing in small increments depending = on the temp and the knock inputs, and it cuts fuel to the rear rotor when intake pressures reach 54" hg! PS,=20 Assuming you're running the stock ECU :-) =20 I've got a PowerFC with Datalogit. I just looked over some logged runs = from the car, and never saw anything over about 115F for air temps (about 50F ambient). Unfortunately, the intake temp sensor is very nearly useless = on an FD, since it tends to read the temp of the aluminum manifold rather = than the air. The Commander display for the PFC shows intake temp, and I = can't make it change even one degree with a 15-20 second 5th gear pull at 10 = psi. When I stuffed a thermocouple in the turbo outlet of the turbo on the = plane, it changes immediately, as it should. =20 you can get the stock FD intercoolers for a song (Nylon end tanks, alum fins). Maybe even the TI and TII previous intercooler models as well. = They are sort of in the same category as the ac coils. You don't need much intercooler airflow at 140kts to really cool that intake charge. Do your test with that intercooler with the proper airflow thru it as well. = Standing still your engine will heat soak while running. I have an FC, and an FD intercooler in the attic somewhere, so the price = is right. Unfortunately, as I've mentioned before, I have no space to = install one on the plane, so that won't be one of my tests. =20 =20 Cheers, Rusty =20 =20 ------=_NextPart_000_0045_01C3806E.996F1E20 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

The FD manuals give an intake air temp limit, and = indeed have a=20 temp (and pressure) sensor located there! Read your manuals for your = turbo=20 engine model you have!! My twin turbo temp sensor has an upper test = limit of=20 176F, so beware things much over that!

The only thing I see is the 176F = test point=20 that you mentioned.  I would have to agree that they don't expect = you to=20 run that high, but I've seen no "limit" listed anywhere.

The circuitry logic will retard the timing in small = increments=20 depending on the temp and the knock inputs, and it cuts fuel to the rear = rotor=20 when intake pressures reach 54" hg! PS,

Assuming you're running the stock = ECU=20 :-) 

I've got a PowerFC with = Datalogit.  I=20 just looked over some logged runs from the car, and never saw anything = over=20 about 115F for air temps (about 50F ambient).  Unfortunately, the = intake=20 temp sensor is very nearly useless on an FD, since it tends to read the = temp of=20 the aluminum manifold rather than the air.  The Commander = display for=20 the PFC shows intake temp, and I can't make it change even one degree = with a=20 15-20 second 5th gear pull at 10 psi.  When I stuffed a = thermocouple=20 in the turbo outlet of the turbo on the plane, it changes immediately, = as it=20 should. 

you can get the stock FD intercoolers for a song = (Nylon end=20 tanks, alum fins). Maybe even the TI and TII previous intercooler models = as=20 well. They are sort of in the same category as the ac coils. You don't = need much=20 intercooler airflow at 140kts to really cool that intake charge. Do your = test=20 with that intercooler with the proper airflow thru it as well. Standing = still=20 your engine will heat soak while running.

I have = an FC, and an FD=20 intercooler in the attic somewhere, so the price is right.  = Unfortunately,=20 as I've mentioned before, I have no space to install one on the plane, = so that=20 won't be one of my tests.  
 
Cheers,
Rusty
  =

 

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