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 3861726 for flyrotary@lancaironline.net; Mon, 21 Sep 2009 22:03:45 -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 BCFA71738F8 for ; Tue, 22 Sep 2009 10:03:08 +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 A563FBEC02D for ; Tue, 22 Sep 2009 10:03:07 +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 12:03:07 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0017_01CA3B7C.A5C42880" 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_0017_01CA3B7C.A5C42880 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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_0017_01CA3B7C.A5C42880 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 Mark,
I like that plate, it gives added = support to the=20 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 = rotor=20 housing.  You use RTV to make a seal between the sealing = plate,=20 rotor housing and SS tube.  Look closely at the picture I posted, = and=20 then check the web link.  The web page shows the entire process = start to=20 finish.  http://www.rot= aryeng.net/Welded-steel-p-port.html
 
Mark

On Mon, Sep 21, 2009 at 8:39 PM, George = Lendich <lendich@aanet.com.au> = wrote:
Mark,
What are PL's sealing = plates are these the=20 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 <keltro@att.net> wrote:
Mark,
  Have you made any decisions on the retension/sealing = method=20 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 = what I=20 reported earlier.  I routinely see 220-225 on climbout, = then they=20 settle down to 200 in cruise.  Maybe I'm producing more = hp now,=20 or maybe the earlier temperature report was not in mid-summer, = or=20 possibly my system is not cooling as well as it did = earlier.  I'm=20 just glad that I installed TES o-rings throughout. =20
My cowl flap initially had an aluminum lip, = that protruded=20 into the airstream about 1".  This was a quick and = dirty=20 test to see the result.  I couldn't open or close = it, it was=20 open all the time.  I have since replaced the 1" lip with = a=20 servo-controlled door so I can open/close as = desired.  When=20 closed it is the same as a stock cowl.  This is very = helpful in=20 cooler climates, not so much during triple-digit Texas summer=20 months.
 
I also added an "airfoil shaped" piece on the firewall = directly=20 above the cowl flap opening.  This was done in the=20 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 is to=20 promote more efficient airflow out of the cowl flap.  = I've heard=20 that these make a big difference.  We'll see.   =
 
If you are considering installing a cowl flap, you may = want to=20 consider locating it on the side, or possibly = install one=20 on each side, back near the firewall.  This would = allow you=20 to make the opening larger, and this=20 location may be in a lower pressure area = than the=20 bottom, especially during climbout.  Just a = 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 be=20 forced to make some major changes to get the more = powerful engine=20 to cool, or else be forced to throttle back during = climbout. =20 I've been considering relocating the radiator from = under the=20 engine to the cool side of the engine (fore/aft).  = This=20 would allow me to use a slightly larger radiator.  It = would clean=20 up the plumbing and significantly shorten the cooling lines=20 too.   
No, I haven't experienced SAG.  But then I'm running = Renesis=20 type irridium spark plugs.  I'm at 143 hours now. =20 Personally, I won't use anything else. 
 
Mark
=
 

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