Return-Path: Received: from mail.tsisp.com ([65.23.108.44] verified) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP-TLS id 394962 for flyrotary@lancaironline.net; Mon, 06 Sep 2004 08:52:46 -0400 Received-SPF: none receiver=logan.com; client-ip=65.23.108.44; envelope-from=steve@tsisp.com Received: from stevehome by mail.tsisp.com (Technical Support Inc.) with SMTP id CQA74584 for ; Mon, 06 Sep 2004 08:52:11 -0400 Reply-To: From: "Steve Brooks" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Rev 3.1 static tests Date: Mon, 6 Sep 2004 08:54:16 -0400 Message-ID: <002601c49410$9ecc1920$6400a8c0@WORKGROUP.local> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0027_01C493EF.17BA7920" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) 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_0027_01C493EF.17BA7920 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Rusty, I'm glad to hear you on line. At least someone in Florida apparently came through the storm OK. I assume since we haven't heard from John or Bulent for awhile, that they are without power. I also wonder if they know about the other hurricane that is headed their way. On your temperature issue, I've been fighting a similar issue on my new cooling set up. What I've discovered is that my evaporator cores are not allowing coolant to flow evenly through them. At least at lower power levels. Only the top ? is getting hot. Originally there were tubes on one side that extended down into the side tank to force the coolant (freon originally) down to the bottom of the core. When I drilled out the cores to install the AN-16 bungs, those tubes went away along with the top plate material. Now, I have some ?" aluminum tubing on order, and I'm going to drill big holes in the bottom 2", and insert it into the core to perform the same function. I also had a devil of a time getting the air to bleed out. It would circulate coolant when it was parked on its nose, but not when upright when I would taxi. That drove me nuts (not a long trip anyways). You might want to check to see that you are using the entire core for ground cooling, and not just 1/4th of it, like I am. Regards, Steve Brooks -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy Sent: Sunday, September 05, 2004 10:26 PM To: Rotary motors in aircraft Subject: [FlyRotary] Rev 3.1 static tests Greetings, Well, my week of fiberglass hell seems to have paid off. As you may recall, I got 5500 rpm with my old inlet ducting, 5700 with the ducting removed, 5820 with the ducting removed, and short air horns on the TB. Today, with all the new inlet installed, I got 6000 static. I'm pretty happy about this. Tracy reported 6200 at 120-130mph in climb, and I'm sure I can top that now. I only saw 27 MAP at full throttle static though, but I can't say I ever tried this when I thought all was well (and was NA). Has anyone tied their plane down, and run full throttle to see what the MAP actually reads? 27 still sounds low, but I just don't think it can be improved in the current configuration, and may just be a reporting error from the way the ports are mounted in the TB. The downside to all this success is cooling. I used to be able to run on the ground for minutes at full throttle without overheating. Not anymore. I exceed 200 in seconds at full throttle, and I saw a max of about 220 degrees for both water and oil during my brief-as-possible runs today. The water might be OK on climb with some airflow, but the oil is going to overheat quickly. It doesn't make sense to have more power, and not be able to use it, so I'm sure my next big project is to improve the oil cooling. Fortunately, after next weekend, I'll have a SlingShot to fly, while I fiddle with the RV-3 for the rest of my life :-) Cheers, Rusty (one solution, leads to a new problem) ------=_NextPart_000_0027_01C493EF.17BA7920 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Ru= sty,

I&= #8217;m glad to hear you on line.  At = least someone in Florida apparently came through the storm OK.  I assume since we = haven’t heard from John or Bulent for awhile, that they are without power.  =

 

I = also wonder if they know about the other hurricane that is headed their = way.

 

On= your temperature issue, I’ve been fighting a similar issue on my new = cooling set up.  What I’ve = discovered is that my evaporator cores are not allowing coolant to flow evenly through = them.  At least at lower power = levels.  Only the top ¼ is = getting hot.

 

Or= iginally there were tubes on one side that extended down into the side tank to = force the coolant (freon originally) down to the bottom of the core.  When I drilled out the cores = to install the AN-16 bungs, those tubes went away along with the top plate = material.  =

 

No= w, I have some ¾” aluminum tubing on order, and I’m going = to drill big holes in the bottom 2”, and insert it into the core to perform the same = function.  =

 

I = also had a devil of a time getting the air to bleed out.  It would circulate coolant when it was parked on its = nose, but not when upright when I would taxi.  That drove me nuts (not a long trip anyways). =

 

Yo= u might want to check to see that you are using the entire core for ground = cooling, and not just 1/4th of it, like I = am.

 

Re= gards,

St= eve Brooks

 

-----Original Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy
Sent: Sunday, September = 05, 2004 10:26 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Rev = 3.1 static tests

 

Greetings,<= /p>

 <= /p>

Well, my week of fiberglass hell seems to have paid off.  As you may = recall, I got 5500 rpm with my old inlet ducting, 5700 with the ducting removed, = 5820 with the ducting removed, and short air horns on the TB.  Today, = with all the new inlet installed, I got 6000 static.  I'm pretty happy = about this.  Tracy reported 6200 at 120-130mph in climb, and I'm sure I = can top that now. 

 <= /p>

I only saw 27 MAP at full throttle static though, but I can't say I ever tried = this when I thought all was well (and was NA).  Has anyone tied their = plane down, and run full throttle to see what the MAP actually reads?  27 = still sounds low, but I just don't think it can be improved in the current configuration, and may just be a reporting error from the way the ports = are mounted in the TB.  <= /p>

 <= /p>

The downside to all this success is cooling.  I used to be able to run on the ground for minutes at full = throttle without overheating.  Not = anymore.  I exceed 200 in seconds at = full throttle, and I saw a max of about 220 degrees for both water and oil = during my brief-as-possible runs today.  = The water might be OK on climb with some airflow, but the oil is going to = overheat quickly.  It doesn’t = make sense to have more power, and not be able to use it, so I’m sure my next = big project is to improve the oil cooling.  = <= /p>

 <= /p>

Fortunately, after next weekend, I'll have a SlingShot to fly, while I fiddle with = the RV-3 for the rest of my life :-)<= /p>

 <= /p>

Cheers,<= /p>

Rusty (one solution, leads to a new problem)<= /p>

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