X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from poplet2.per.eftel.com ([203.24.100.45] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3861794 for flyrotary@lancaironline.net; Tue, 22 Sep 2009 00:05:38 -0400 Received-SPF: none receiver=logan.com; client-ip=203.24.100.45; envelope-from=lendich@aanet.com.au Received: from sv1-1.aanet.com.au (sv1-1.per.aanet.com.au [203.24.100.68]) by poplet2.per.eftel.com (Postfix) with ESMTP id 9D2361736EE for ; Tue, 22 Sep 2009 12:04:58 +0800 (WST) Received: from ownerf1fc517b8 (203.171.92.134.static.rev.aanet.com.au [203.171.92.134]) by sv1-1.aanet.com.au (Postfix) with SMTP id CDC11BEC005 for ; Tue, 22 Sep 2009 12:04:56 +0800 (WST) Message-ID: From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Progress report from Houston Date: Tue, 22 Sep 2009 14:04:56 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0023_01CA3B8D.AA2D3F40" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-Antivirus: avast! (VPS 090921-0, 09/21/2009), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0023_01CA3B8D.AA2D3F40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mark, I didn't see where the screws were placed, are they at the outer corners = of the plate? George ( down under) George,=20 What I like about the plate is that if it leaks you can remove it, = clean it up, and re-seal it. You can't do that if it is welded in = place. Besides, it is held in place with four 1/4-20 screws. Mark On Mon, Sep 21, 2009 at 9:03 PM, George Lendich = wrote: Mark, I like that plate, it gives added support to the manifold. It may be = better welded on- then again there's the distortion issue. George ( down under) No, they're plates that fit over the 2" SS tubes and bolt to the = rotor housing. You use RTV to make a seal between the sealing plate, = rotor housing and SS tube. Look closely at the picture I posted, and = then check the web link. The web page shows the entire process start to = finish. http://www.rotaryeng.net/Welded-steel-p-port.html Mark On Mon, Sep 21, 2009 at 8:39 PM, George Lendich = wrote: Mark, What are PL's sealing plates are these the sides plates he uses = to pressure the sealant? George ( down under) Kelly, Yes, I TIG welded them to the inner liner, then used PL's = sealing plates and Ultra Grey RTV to seal off the coolant. I plan to = pressure test them prior to assembly. Mark On Mon, Sep 21, 2009 at 2:41 PM, Kelly Troyer = wrote: Mark, Have you made any decisions on the retension/sealing = method for your 20B "P" port inserts ?? -- Kelly Troyer=20 "Dyke Delta"_13B ROTARY Engine=20 "RWS"_RD1C/EC2/EM2=20 "Mistral"_Backplate/Oil Manifold=20 -------------- Original message from Mark Steitle = : --------------=20 Bill,=20 I'm not sure what's changed, but my oil temps are up from = what I reported earlier. I routinely see 220-225 on climbout, then they = settle down to 200 in cruise. Maybe I'm producing more hp now, or maybe = the earlier temperature report was not in mid-summer, or possibly my = system is not cooling as well as it did earlier. I'm just glad that I = installed TES o-rings throughout. =20 My cowl flap initially had an aluminum lip, that protruded = into the airstream about 1". This was a quick and dirty test to see the = result. I couldn't open or close it, it was open all the time. I have = since replaced the 1" lip with a servo-controlled door so I can = open/close as desired. When closed it is the same as a stock cowl. = This is very helpful in cooler climates, not so much during triple-digit = Texas summer months. I also added an "airfoil shaped" piece on the firewall = directly above the cowl flap opening. This was done in the hope of = helping coax the heated air out of the cowl. But I didn't detect any = great improvement in cooling. Oh, well. Next thing I plan on adding is = small air dams on each end of the flap door. The idea here is to = promote more efficient airflow out of the cowl flap. I've heard that = these make a big difference. We'll see. =20 If you are considering installing a cowl flap, you may = want to consider locating it on the side, or possibly install one on = each side, back near the firewall. This would allow you to make the = opening larger, and this location may be in a lower pressure area than = the bottom, especially during climbout. Just a thought. Cooling is still marginal in the Texas heat, and it will = be worse with the new P-port 20B engine. So, I may be forced to make = some major changes to get the more powerful engine to cool, or else be = forced to throttle back during climbout. I've been considering = relocating the radiator from under the engine to the cool side of the = engine (fore/aft). This would allow me to use a slightly larger = radiator. It would clean up the plumbing and significantly shorten the = cooling lines too. =20 No, I haven't experienced SAG. But then I'm running = Renesis type irridium spark plugs. I'm at 143 hours now. Personally, I = won't use anything else. =20 Mark ------=_NextPart_000_0023_01CA3B8D.AA2D3F40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Mark,
I didn't see where the screws were = placed, are they=20 at the outer corners of the plate?
George ( down under)
George,
 
What I like about the plate is that if it leaks you can = remove=20 it, clean it up, and re-seal it.  You can't do that if it is = welded in=20 place.  Besides, it is held in place with four 1/4-20 = screws.
 
Mark

On Mon, Sep 21, 2009 at 9:03 PM, George = Lendich <lendich@aanet.com.au> = wrote:
 Mark,
I like that plate, it gives added = support to=20 the manifold. It may be better welded on- then again there's the = distortion=20 issue.
George ( down under)
No, they're plates that fit over the 2" SS tubes and bolt to = the=20 rotor housing.  You use RTV to make a seal between the = sealing=20 plate, rotor housing and SS tube.  Look closely at the = picture I=20 posted, and then check the web link.  The web page shows the = entire=20 process start to finish.  http://www.rotaryeng.net/Welded-steel-p-port.html
 
Mark

On Mon, Sep 21, 2009 at 8:39 PM, George = Lendich=20 <lendich@aanet.com.au> wrote:
Mark,
What are PL's sealing = plates are these=20 the sides plates he uses to pressure the sealant?
George ( down = under)
Kelly,
 
Yes, I TIG welded them to the inner liner, then used PL's = sealing=20 plates and Ultra Grey RTV to seal off the coolant.  I = plan=20 to pressure test them prior to assembly.
 
Mark

On Mon, Sep 21, 2009 at 2:41 PM, = Kelly Troyer=20 <keltro@att.net> wrote:
Mark,
  Have you made any decisions on the = retension/sealing=20 method for your 20B "P" port inserts ??
--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine=20
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold =
--------------=20 Original message from Mark Steitle <msteitle@gmail.com>: -------------- =

Bill,
 
I'm not sure what's changed, but my oil temps are up = from=20 what I reported earlier.  I routinely see 220-225 on=20 climbout, then they settle down to 200 in cruise.  = Maybe I'm=20 producing more hp now, or maybe the earlier temperature = report was=20 not in mid-summer, or possibly my system is not cooling as = well as=20 it did earlier.  I'm just glad that I installed = TES=20 o-rings throughout. 
My cowl flap initially had an aluminum lip,=20 that protruded into the airstream about = 1".  This=20 was a quick and dirty test to see the result.  I = couldn't open or close it, it was open all the time.  = I have=20 since replaced the 1" lip with a = servo-controlled door so I=20 can open/close as desired.  When closed it is the = same as a=20 stock cowl.  This is very helpful in cooler climates, = not so=20 much during triple-digit Texas summer months.
 
I also added an "airfoil shaped" piece on the = firewall=20 directly above the cowl flap opening.  This was = done in=20 the hope of helping coax the heated air out = of the=20 cowl.  But I didn't detect any great improvement in=20 cooling.  Oh, well.  Next thing I plan on = adding is=20 small air dams on each end of the flap door.  The = idea here=20 is to promote more efficient airflow out of the cowl = flap. =20 I've heard that these make a big difference.  We'll=20 see.  =20
 
If you are considering installing a cowl flap, you = may want=20 to consider locating it on the side, or possibly = install=20 one on each side, back near the firewall.  This = would=20 allow you to make the opening larger, and this=20 location may be in a lower pressure area=20 than the bottom, especially during climbout.  = Just a=20 thought.
 
Cooling is still marginal in the Texas heat, = and it=20 will be worse with the new P-port 20B engine.  = So, I may=20 be forced to make some major changes to get the more=20 powerful engine to cool, or else be forced to = throttle back=20 during climbout.  I've been = considering relocating=20 the radiator from under the engine to the cool side = of the=20 engine (fore/aft).  This would allow me to use a = slightly=20 larger radiator.  It would clean up the plumbing and=20 significantly shorten the cooling lines=20 too.   
No, I haven't experienced SAG.  But then I'm = running=20 Renesis type irridium spark plugs.  I'm at 143 hours=20 now.  Personally, I won't use anything else.  =
 
Mark
=
 

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