X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp1.av-mx.com ([137.118.16.57] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4381752 for flyrotary@lancaironline.net; Mon, 05 Jul 2010 21:44:04 -0400 Received-SPF: pass receiver=logan.com; client-ip=137.118.16.57; envelope-from=res12@fairpoint.net Received: from main (unknown [66.243.228.135]) (Authenticated sender: res12@fairpoint.net) by smtp1.av-mx.com (Postfix) with ESMTP id 9E5982913C4 for ; Mon, 5 Jul 2010 21:43:27 -0400 (EDT) Message-ID: From: "Richard Sohn" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Flight Report Date: Mon, 5 Jul 2010 20:44:34 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00D3_01CB1C82.E03AB0A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5931 This is a multi-part message in MIME format. ------=_NextPart_000_00D3_01CB1C82.E03AB0A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mark, I am seeing the same at below 2500rpm, but it is practically the same = down to about 1600. I am running a carb with a 22" intake runner, and = the carburetor is not fully tuned for idle mixture yet. My gear ratio is = 3.33:1, so even at 2500 the prop speed is not an issue. Richard Sohn N2071U ----- Original Message -----=20 From: Mark Steitle=20 To: Rotary motors in aircraft=20 Sent: Monday, July 05, 2010 6:51 PM Subject: [FlyRotary] Re: Flight Report Richard,=20 Yes, it is a p-port. I've got about 5 hours on it now. It runs good, = but I can't say that it runs as smooth at lower speeds (below 2500 rpm) = than the side port engine did. That may be due to some tuning issues, = maybe not. Time will tell on that. Besides, I don't run much at lower = rpm. However, above 3000 rpm, it runs better than the side-port engine. = I suspect the tangential muffler is causing a loss of power at higher = rpm. I'll explore other options later. =20 I reported earlier that at "economy cruise" settings, I picked up = 10-12 knots with the p-port engine vs. the side port engine, but that = came with a higher fuel burn. No free lunch here. This is at 5200 rpm. = I'll report later on speeds in the mid to upper 6k range. =20 Mark =20 On Mon, Jul 5, 2010 at 6:16 PM, Richard Sohn = wrote: Mark, you are flying the PP engine? right? I think this is something worth = mentioning. I believe it is the only PP flying at the time.=20 Judging by the issues you are dealing with, the PP section seems to = be a no brainer. The reason I am addressing this is the fact that during = my work on the PP single rotor, there was never any issue with the PP = during all the testing and modifications, it just keeps running whenever = I want it to, and it is running good. I am working hard on joining you = soon with my PP Rotary. Richard Sohn N2071U ----- Original Message -----=20 From: Mark Steitle=20 To: Rotary motors in aircraft=20 Sent: Monday, July 05, 2010 4:18 PM Subject: [FlyRotary] Flight Report Guys, Things have been a little too quiet on the list lately, so I = thought I would post a flight report on the Renesis water pump = conversion I recently completed on my 20B. =20 I recently converted my 20B to accept the Renesis water pump. I = did this after weighing the two and found that it would save 6-7 lbs. = While it was more work that I had estimated, it turned out well worth = the effort. After working through a persistent misfire issue over the = past few weeks which was cured by careful attention to the CAS setup, I = was finally able to take to the air last weekend. OAT was 69-70* @ = 2,500 msl and there was a 3000' ceiling, so I didn't go any higher. =20 Things went very well, climbing out at 6700 rpm water got to 175*, = oil to 185*. Circling at a modest 25.5" MAP, water temps dropped to = 143*, oil settled in at 160* (my oil temp target). Adding power, I saw = the oil temps starting to creap up a bit, bumping 165*. Cowl flap was = left open during the entire flight. Needless to say, I am very pleased. = =20 It should be noted that in conjuction to the Renesis water pump, I = added a Laminova oil/water exchanger. It is connected to the coolant = return line and in series with the oil/air exchanger. I measured a 10* = increase in coolant temp through the exchanger. I haven't measured the = oil temp drop yet. However I estimate the oil temp drop through the = exchanger to be 20-25*. =20 Mark =20 ------=_NextPart_000_00D3_01CB1C82.E03AB0A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Mark,
 
I am seeing the same at below 2500rpm, = but it is=20 practically the same down to about 1600. I am running a carb with a 22" = intake=20 runner, and the carburetor is not fully tuned for idle mixture yet. My = gear=20 ratio is 3.33:1, so even at 2500 the prop speed is not an = issue.
 
Richard Sohn
N2071U
----- Original Message -----
From:=20 Mark = Steitle=20
Sent: Monday, July 05, 2010 = 6:51 PM
Subject: [FlyRotary] Re: Flight = Report

Richard, 

Yes, it is a p-port.  I've got about 5 hours on it now. =  It=20 runs good, but I can't say that it runs as smooth at lower speeds = (below 2500=20 rpm) than the side port engine did.  That may be due to some = tuning=20 issues, maybe not.  Time will tell on that.  Besides, I = don't run=20 much at lower rpm.  However, above 3000 rpm, it runs better than = the=20 side-port engine.  I suspect the tangential muffler is causing a = loss of=20 power at higher rpm.  I'll explore other options later.  =20  

I reported earlier that at "economy cruise" settings, I picked up = 10-12=20 knots with the p-port engine vs. the side port engine, but that came = with a=20 higher fuel burn.  No free lunch here.  This is at 5200 rpm. =  I'll report later on speeds in the mid to upper 6k range. =  

Mark    

On Mon, Jul 5, 2010 at 6:16 PM, Richard Sohn = <res12@fairpoint.net> = wrote:
Mark,
 
you are flying the PP engine? = right? I think=20 this is something worth mentioning. I believe it is the only PP = flying at=20 the time.
Judging by the issues you are = dealing with, the=20 PP section seems to be a no brainer. The reason I am addressing this = is the=20 fact that during my work on the PP single rotor, there was never any = issue=20 with the PP during all the testing and modifications, it just keeps = running=20 whenever I want it to, and it is running good. I am working hard on = joining=20 you soon with my PP Rotary.
 
Richard Sohn
N2071U
 
 
----- Original Message ----- =
From: = Mark Steitle
To: Rotary = motors in=20 aircraft
Sent: Monday, July 05, 2010 = 4:18=20 PM
Subject: [FlyRotary] Flight = Report

Guys,
 
Things have been a little too quiet on the list lately, so I = thought=20 I would post a flight report on the Renesis water pump = conversion I=20 recently completed on my 20B. 
 
I recently converted my 20B to accept the = Renesis=20 water pump.  I did this after weighing the two and found = that it=20 would save 6-7 lbs.  While it was more work that I had=20 estimated, it turned out well worth the effort.  After = working=20 through a persistent misfire issue over the past few weeks which = was cured=20 by careful attention to the CAS setup, I was finally able to take = to the=20 air last weekend.  OAT was 69-70* @ 2,500 msl and there was a = 3000'=20 ceiling, so I didn't go any higher.  
 
Things went very well, climbing out at 6700 rpm water got to = 175*,=20 oil to 185*.  Circling at a modest 25.5" MAP, water = temps=20 dropped to 143*, oil settled in at 160* (my oil temp = target).  Adding=20 power, I saw the oil temps starting to creap up a bit, = bumping=20 165*.  Cowl flap was left open during the = entire flight. =20 Needless to say, I am very pleased.  
 
It should be noted that in conjuction to the = Renesis water=20 pump, I added a Laminova oil/water exchanger.  It is = connected to the=20 coolant return line and in series with the oil/air = exchanger.  I=20 measured a 10* increase in coolant temp through the = exchanger.  I=20 haven't measured the oil temp drop yet.  However=20 I estimate the oil temp drop through the exchanger to=20 be 20-25*.  
 
=
Mark    

------=_NextPart_000_00D3_01CB1C82.E03AB0A0--