X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-ob0-f180.google.com ([209.85.214.180] verified) by logan.com (CommuniGate Pro SMTP 6.0c1) with ESMTPS id 5739018 for flyrotary@lancaironline.net; Fri, 31 Aug 2012 22:10:10 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.180; envelope-from=rwstracy@gmail.com Received: by obceq6 with SMTP id eq6so5599883obc.25 for ; Fri, 31 Aug 2012 19:09:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=5uXjuo9Q7LblbRo+uWzmYAz/tOE1nGPiRnK8sen7aFs=; b=G0nZkSPAPM1ZUjN1BbzDOrGz8AKHgfSNpxDIOSh7pkrxfEKSUnYRaMtqpi5CubhpBs b0j4rrpF52SXaUL3j8x2EUz2llWktwdSeyspAStF9V1DFaFlOjrr16ZAh+0MR+UcSgNi JxMuw8aYXiZE7GQp2BbHMJt0kouGsHK//cjTTctfGg3Gtyj0Ob2PIDfedoG5O91p33aG kH78eqWEDgD6t5wcPL+bYinRJgymNpBHt6TGsNc2RaO7LeN5Hsf58T+kxRrfDvs8e5a+ G2xmKJD6BimQB5Ir2U5blchLDg0RxcLslHZ4MV3iB6DZe886aOVEk6L6aROfUUuXP/BN hbZA== MIME-Version: 1.0 Received: by 10.60.3.202 with SMTP id e10mr9299559oee.52.1346465375226; Fri, 31 Aug 2012 19:09:35 -0700 (PDT) Received: by 10.76.81.230 with HTTP; Fri, 31 Aug 2012 19:09:35 -0700 (PDT) In-Reply-To: References: Date: Fri, 31 Aug 2012 22:09:35 -0400 Message-ID: Subject: Re: [FlyRotary] Re: FIRST FLIGHT N655HC From: Tracy To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=e89a8ff1ce4c64896904c89a66c6 --e89a8ff1ce4c64896904c89a66c6 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable I fabricated a split fiberglass flange at the front of cowling leaving about a 1" gap around the neck of the drive. Then I attached a baffle made from sheet nylon to close the remaining gap. Added some radial cuts in the nylon to allow it to deflect if contact happens.. Tracy On Fri, Aug 31, 2012 at 1:41 PM, Bill Bradburry w= rote: > ** ** ** ** > > How did you seal it? What materials did you use? I am not certain how t= o > do that and still give the PSRU nose room to move.**** > > ** ** > > Bill B**** > > ** ** > ------------------------------ > > *From:* **Rotary motors in aircraft** [mailto:flyrotary@lancaironline.net= ] > *On Behalf Of *****Tracy**** > *Sent:* Friday, August 31, 2012 12:52 PM > > *To:* **Rotary motors in aircraft** > *Subject:* [FlyRotary] Re: FIRST FLIGHT N655HC > **** > > ** ** > > It IS good to seal that area behind the spinner but for a different > reason. I was trying to improve cooling one day and sealed around the > neck of the drive. Cooling got ever so slightly worse but my airspeed a= t > the rpm I was testing at go BETTER (by about 2 mph). The reason was that > the spinner was pumping air out of the cowl at the spinner gap (mine was > pretty big, about 1/2") and creating drag. But since the air was being > drawn from behind the rad, it improved cooling a little. I was glad to > make the trade because a solid 2 mph is harder to come by than the little > bit of cooling that it gave up.**** > > ** ** > > ****Tracy**** > > Sent from my iPad**** > > > On Aug 31, 2012, at 12:25 PM, "Bill Bradburry" > wrote:**** > > ****** > > I didn=92t see any input when I last asked this question, so I will try n= ow > that we are again talking about cooling.******** > > ** ****** > > How are you sealing around the PSRU outlet on the cowl? I am talking > about the area behind the spinner. This area allows air to enter behind > the heat exchangers and it seems to me that it would adversely affect > cooling. This area is open on my plane because I haven=92t figured out h= ow > to seal it. I am wondering what others have done?******** > > ** ****** > > Bill B******** > > ** ****** > ------------------------------ > > *From:* ****Rotary motors in aircraft**** [mailto: > flyrotary@lancaironline.net] *On Behalf Of *Ed Anderson > *Sent:* Friday, August 31, 2012 11:56 AM > *To:* ****Rotary motors in aircraft**** > *Subject:* [FlyRotary] Re: FIRST FLIGHT N655HC**** > **** > > ** ****** > > Congratulations David,******** > > ******** > > I would completely seal any leaks around the sides or anyplace else that > could leak between duct inlet and radiator. I read someplace that a > 1/2"square hole could cost you 20% of your cooling effectiveness. ******= * > * > > ******** > > A gent who once sold Subaru engine installations tried just sticking the > radiator in back of the opening (no ducting) - did not cool.******** > > ******** > > Yes, I find that getting the airflow up as soon as safely possible will > help a great deal in keeping temps down and bring them back down quickly. > My magic airspeed after take off is 120 MPH IAS then a 140 IAS for climbo= ut. > ******** > > ******** > > Looking forward to more reports******** > > ******** > > Ed******** > > ******** > > ******** > > ** ****** > > *From:* Ernest Chrisltey ******** > > *Sent:* Friday, August 31, 2012 11:01 AM******** > > *To:* Rotary motors in aircraft ******** > > *Subject:* [FlyRotary] Re: FIRST FLIGHT N655HC******** > > ** ****** > > Congratulations, David. I hope to be following you soon. > > Are you able to cool on the ground? What did you do to improve the > cooling between the two flights? > > > On 08/30/2012 10:48 PM, hoursaway1@comcast.net wrote:******** > > Thanks Mark, it was kind of anti-climatic for the others on the ground > because they already saw that last month, but for me seeing the temps > coming down at about the same stage as Terry saw them still climbing was > comforting. I'm setting up a video camera to record the panel so I can > focus on flying for now until I get more comfortable. We have a 100 mile > radius to work with & I asked for & was granted a crew member during the > flights that computer tuning will be worked on. Tryed to get a stewardes= s > also but FAA said no. ???? Yes I read Ed's procedure for takeoff & ou= r > sys. is very similar so will use for next flights. Terry is a member of > our EAA Chapter 55 here in Mason MI, his dad just flew his 400 th Young > Eagle. ( where is that > stewardess with my Margarita ) David.******** > ------------------------------ > > *From: *"Mark Steitle" > *To: *"****Rotary motors in aircraft****" > *Sent: *Thursday, August 30, 2012 7:44:53 PM > *Subject: *[FlyRotary] Re: FIRST FLIGHT N655HC > > David, ******** > > ** ****** > > Congrats!!! Job well done. Terry Lutz... WOW! ******** > > ** ****** > > What was the OAT? I start to get nervous when my coolant temp goes above > 200 F. No reason to climb at WOT if not needed and OAT is high. *******= * > > ** ****** > > Mark S. ******** > > On Thu, Aug 30, 2012 at 6:07 PM, wrote:******** > > First flight for me anyhow not for the aircraft, Terry Lutz ( AKA;; worl= d > renowned professional test pilot, flew in from ********France******** to > do the First, First flight ) > Temps went;; coolant 221 F max, oil 210 F max, on full throttle > clime out up to 2000 ft., powered back from 6300 rpm to 5000 rpm/135 mph > indicated, push the nose over to level off, pulled power back to 4500 rpm > ( made no prop pitch changes at this time ) temps went down to;; > coolant 195 F, oil 190 F, this is without therm. & bypass blocked, also > would like comments about sealing around sides of both radiators, we saw > the extra fins there so we allowed air to pass through that area, may > install a temp seal & recheck data points next flight. Then possibly > install venting openings in bottom of cowl to let more airflow out > quicker. David R. Cook RV6A Rotary.******** > ------------------------------ > > *From: *"Joseph Pirch" > *To: *hoursaway1@comcast.net, "rv man2010" > *Sent: *Wednesday, August 29, 2012 8:40:58 PM > > > > > > [image/jpeg:photo.JPG] > > > > > Sent from my iPad******** > > ** ****** > > > > > **** > **** > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2012.0.2197 / Virus Database: 2437/5237 - Release Date: 08/31/12= * > ******* > > ****** > --e89a8ff1ce4c64896904c89a66c6 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable I fabricated a split fiberglass flange at the front of cowling leaving abou= t a 1" gap around the neck of the drive.=A0 Then I attached a baffle m= ade from sheet nylon to close the remaining gap.=A0 Added some radial cuts = in the nylon to allow it to deflect if contact happens..

Tracy

On Fri, Aug 31, 2012 at 1:41 PM= , Bill Bradburry <bbradburry@bellsouth.net> wrote:

How did you seal it?=A0 What = materials did you use?=A0 I am not certain how to do that and still give the PSRU nose ro= om to move.

=A0

Bill B

=A0

= From: Rotary motor= s in aircraft [mailto:fl= yrotary@lancaironline.net] On Behalf Of Tracy
Sent: Friday, August 31, 201= 2 12:52 PM


To: Rotary motors in aircraft
Subject: [FlyRotary] Re: FIR= ST FLIGHT N655HC

=A0

It IS good to seal that area behind= the spinner but for a different reason. =A0 I was trying to improve cooling one day and sealed around the neck of the drive. =A0 Cooling got ever so slightly worse but my airspeed at the rpm I was testing at go BETTER (by about 2 mph). =A0The reason was that the spinner was pumping air out of the cowl at the spinner gap (mine was pretty big, about 1/2") and creating drag. =A0Bu= t since the air was being drawn from behind the rad, it improved cooling a little. =A0I was glad to make the trade because a solid 2 mph is harder to come by than the little bit of cooling that it gave up.

=A0

Tracy=

Sent from my iPad


On Aug 31, 2012, at 12:25 PM, "Bill Bradburry" <bbradburry@bellsouth.net> wrote:

I didn=92t see any input when= I last asked this question, so I will try now that we are again talking about cooling.<= /font>

=A0

How are you sealing around th= e PSRU outlet on the cowl?=A0 I am talking about the area behind the spinner.=A0 This area allows air to enter behind the heat exchangers and it seems to me that= it would adversely affect cooling.=A0 This area is open on my plane because I haven=92t figured out how to seal it.=A0 I am wondering what others have do= ne?

=A0

Bill B

=A0

= From: Rotar= y motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Friday, August 31, 201= 2 11:56 AM
To: Rotary mot= ors in aircraft
Subject: [FlyRotary] Re: FIR= ST FLIGHT N655HC

=A0

Congratulations David,

=A0

I would completely seal any = leaks around the sides or anyplace else that could leak between duct inlet and radiator.=A0 I read someplace that a 1/2"square hole could cost you 20% of your cooling effectiveness.=A0

=A0

A gent who once sold Subaru = engine installations tried just sticking the radiator in back of the opening (no ducting) - did = not cool.

=A0

Yes, I find that getting the= airflow up as soon as safely possible will help a great deal in keeping temps down and bring them back down quickly.=A0 My magic airspeed after take off is 120 MPH IAS then = a 140 IAS for climbout.

=A0

Looking forward to more repo= rts

=A0

Ed

=A0

=A0

=A0

Sent: Friday, August 31, 2012 11:01 AM

Subject: [FlyRotary] Re: FIRST FLIGHT N655HC

=A0

Congratulations, David.=A0 I hope t= o be following you soon.

Are you able to cool on the ground?=A0 What did you do to improve the cooling between the two flights?


On 08/30/2012 10:48 PM, hoursaway1@comcast.net wrote:

Thanks Mark, it was kind of anti-climatic for the others on the ground because they already saw that last month, but for me seeing the temps coming down at about the same = stage as Terry saw them still climbing was comforting.=A0 I'm setting up a vi= deo camera to record the panel so I can focus on flying for now until I get mor= e comfortable.=A0=A0We have a 100 mile radius to work with & I asked for &=A0was granted a crew member during the flights that=A0computer tuning will be worked on.=A0 Tryed to get a stewardess also but FAA said no.=A0 ????=A0=A0=A0 Yes I read Ed's procedure for takeoff & our sys. is very similar so will use for next flights.=A0=A0Terry is a member of our EAA Chapter 55 here in Mason MI,=A0 his dad just flew his 400 th Young Eagle.=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 =A0=A0=A0=A0=A0=A0=A0 (=A0 where is that stewardess with my Margarita )=A0=A0=A0=A0=A0=A0=A0=A0=A0 David.<= /font>

<= span style=3D"font-size:12.0pt;font-family:Arial;font-weight:bold">From: &quo= t;Mark Steitle" <msteitle@gmail.com>
To: "Rota= ry motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, August 30, 2= 012 7:44:53 PM
Subject: [FlyRotary] Re: FIR= ST FLIGHT N655HC

David,=A0

=A0

Congrats!!! =A0Job well done= . =A0Terry Lutz... WOW! =A0

=A0

What was the OAT? =A0I start= to get nervous when my coolant temp goes above 200 F. =A0No reason to climb at WOT if not neede= d and OAT is high. =A0

=A0

Mark S. =A0=A0

On Thu, Aug 30, 2012 at 6:07= PM, <hoursa= way1@comcast.net> wrote:

First flight for me anyhow n= ot for the aircraft, Terry Lutz ( AKA;;=A0 world renowned professional test pilot, flew in from = France to do the First, First flight )
Temps went;;=A0=A0 coolant 221 F=A0 max,=A0 oil 210 F=A0 max,=A0 on full throttle clime out up to 2000 ft., powered back from 6300 rpm to 5000 rpm/135 mph indicated, push the nose over to level off, pulled power back to 4500 rpm=A0 ( made no prop pitch changes at this time )=A0=A0 temps went down to;;=A0=A0 coolant 195 F,=A0 oil 190 F,=A0 this is without therm. & bypass blocked, also would like comments about sealing around sides of both radiators, we saw the extra fins there s= o we allowed air to pass through that area, may install a temp seal & rechec= k data points next flight. Then possibly install venting openings in bottom o= f cowl to let more airflow out quicker.=A0=A0 David=A0 R. Cook=A0 RV6A=A0 Rotary.

<= span style=3D"font-size:12.0pt;font-family:Arial;font-weight:bold">From: &quo= t;Joseph Pirch" <pirch@sbcglobal.net>
To: hoursaway1@comcast.net, "rv man2010" <rv.man2010@hotmail.com>
Sent: Wednesday, August 29, = 2012 8:40:58 PM





[image/jpeg:photo.JPG]




Sent from my iPad

=A0




No virus found in this message.
Checked by AVG - www.avg.c= om
Version: 2012.0.2197 / Virus Database: 2437/5237 - Release Date: 08/31/12


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