X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from outbound-b1.mx-route.com ([208.123.79.45] verified) by logan.com (CommuniGate Pro SMTP 5.4c2) with ESMTP id 4925300 for flyrotary@lancaironline.net; Mon, 28 Mar 2011 18:22:25 -0400 Received-SPF: none receiver=logan.com; client-ip=208.123.79.45; envelope-from=tom@midwestaviation.net Received: from 71-46-49-251.net.bhntampa.com (HELO [10.7.16.227]) ([71.46.49.251]) by smtp.mxtoolbox.com with ESMTP; 28 Mar 2011 17:21:48 -0500 From: Thomas Giddings Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: multipart/alternative; boundary=Apple-Mail-6-846707086 Subject: Re: [FlyRotary] Turbo turbine hsg A/R ratio(was intersting video) Date: Sun, 27 Mar 2011 21:40:54 -0400 In-Reply-To: To: "Rotary motors in aircraft" References: Message-Id: <643AD2D3-CEF9-42C5-88BB-302635A24AA0@midwestaviation.net> X-Mailer: Apple Mail (2.1084) --Apple-Mail-6-846707086 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Kelly: Yes I know that...Brain fadeitis...I am using a 1.15 A/R...I am = glad you guys keep me on my toes Tom Giddings On Mar 27, 2011, at 10:24 AM, Kelly Troyer wrote: > Tom, > I think Greg's 1.06 A/R turbine hsg is probably in the = ballpark..........Your 0.72 hsg will probably be a > screamer off the ground and for racing but may tend to have excess = back pressure and over-speed at > cruising altitudes............You may have to have an extra turbine = hsg for cruise to reduce wear on your > turbo since your ship will be dual purpose...................The = current group flying Turbo/13B's with TO4 > turbine sections have 0.98 to 1.15 A/R hsgs................My TO4E-50 = has a 1.15 A/R hsg for cruising at > oxygen levels (12,000 msl +)................Your 20B flows 1/3 again = more air than the 13B and of course > all of our projects will take flight testing to prove out all these = guesstimates.............IMHO...............<:) > =20 > =20 > Kelly Troyer > "DYKE DELTA JD2" (Eventually) > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold >=20 > "TURBONETICS"_TO4E50 Turbo >=20 >=20 >=20 > From: Greg Ward > To: Rotary motors in aircraft > Sent: Sat, March 26, 2011 11:52:30 PM > Subject: [FlyRotary] Re: Fw: [FlyRotary] Re: intersting video >=20 > Hey Tom; > Ours is the 1.06 A/R, and as you can see, we are going straight out = the side of the cowling. > Boost wise, we have a box of springs for the wastegate, and will wait = for the dyno tests to find out our best settings. With the prop = configuration we have, we anticipate not a hell of a lot of = acceleration, until we hit around 120 Knots, and then watch = out........(:-) > Greg >=20 >=20 > ----- Original Message ----- From: "Thomas Giddings" = > To: "Rotary motors in aircraft" > Sent: Saturday, March 26, 2011 8:09 PM > Subject: [FlyRotary] Re: Fw: [FlyRotary] Re: intersting video >=20 >=20 > Greg: I am using the GT4294 56Trim 0.60 A/R Water/oil cooled . The = 4088 is 54Trim 0.72 A/RI thought this might work better to keep the = exhaust from backing up.It will be slow on bottom end ,but start making = power around 3500 and up.. We are looking at about the power you are = expecting. How much boost are you using? I am also curious what your = intake plenum cost to build. >=20 > On Mar 26, 2011, at 10:41 PM, Greg Ward wrote: >=20 > > Got it right the first time Tom. > > Greg > >=20 > > ----- Original Message ----- From: "Thomas Giddings" = > > To: "Rotary motors in aircraft" > > Sent: Saturday, March 26, 2011 4:02 PM > > Subject: [FlyRotary] Re: Fw: [FlyRotary] Re: intersting video > >=20 > >=20 > > Greg: Is your Turbo set up a GT4088 non bb unit ? > > Tom Giddings > > VP Avionics Sales > > MIDWEST AVIONICS > > 200 Hardy Roberts Dr > > PO Box 219 > > West Paducah,KY 42086 > > 877-904 9966 > > Cell; 727 858-1772 > > FAX:270 744 3466 > > tom@midwestaviation.net > > Online Store > > www.midwest-avionics.com > >=20 > >=20 > >=20 > > -- > > Homepage: http://www.flyrotary.com/ > > Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html >=20 >=20 > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html >=20 >=20 > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html --Apple-Mail-6-846707086 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii Kelly: Yes I know that...Brain fadeitis...I am = using a 1.15 A/R...I am glad you guys keep me on my toes


Tom Giddings
On Mar 27, 2011, at = 10:24 AM, Kelly Troyer wrote:

   I think Greg's 1.06 = A/R turbine hsg is probably in the ballpark..........Your 0.72 hsg will = probably be a
screamer off the ground and = for racing but may tend to have excess back pressure and over-speed = at
cruising altitudes............You may have to = have an extra turbine hsg for cruise to reduce wear on your
turbo since your ship will be dual = purpose...................The  current group flying Turbo/13B's = with TO4
turbine sections have 0.98 to = 1.15 A/R hsgs................My TO4E-50 has a 1.15 A/R hsg for cruising = at
oxygen levels (12,000 msl = +)................Your 20B flows 1/3 again more air than the 13B and of = course
all of our projects will take = flight testing to prove out all these = guesstimates.............IMHO...............<:)
 
  Kelly = Troyer
"DYKE DELTA JD2" (Eventually)

"13B ROTARY"_ = Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil = Manifold

"TURBONETICS"_TO4E50 Turbo


From: Greg Ward <gregw@onestopdesign.biz>To: Rotary motors in aircraft = <flyrotary@lancaironline.net>
Sent: Sat, March 26, 2011 = 11:52:30 PM
 [FlyRotary] Re: Fw: = [FlyRotary] Re: intersting video

Hey Tom;
Ours is the = 1.06 A/R, and as you can see, we are going straight out the side of the = cowling.
Boost wise, we have a box of springs for the wastegate, and = will wait for the dyno tests to find out our best settings.  With = the prop configuration we have, we anticipate not a hell of a lot of = acceleration, until we hit around 120 Knots, and then watch = out........(:-)
Greg


----- Original Message ----- From: = "Thomas Giddings" <tom@midwestaviation.net>=
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net= >
Sent: Saturday, March 26, 2011 8:09 PM
Subject: = [FlyRotary] Re: Fw: [FlyRotary] Re: intersting video


Greg: I = am using the GT4294  56Trim  0.60 A/R Water/oil cooled . The = 4088 is 54Trim 0.72 A/RI thought this might work better to keep the = exhaust from backing up.It will be slow on bottom end = ,but start making power around 3500 and up.. We are looking at about the = power you are expecting. How much boost are you using? I am also curious = what your intake plenum cost to build.

On Mar 26, 2011, at 10:41 = PM, Greg Ward wrote:

> Got it right the first time = Tom.
> Greg
> 
> ----- Original = Message ----- From: "Thomas Giddings" <tom@midwestaviation.net>=
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net= >
> Sent: Saturday, March 26, 2011 4:02 PM
> Subject: = [FlyRotary] Re: Fw: [FlyRotary] Re: intersting video
> 
> 
> Greg: Is your = Turbo set up  a GT4088 non bb unit ?
> Tom Giddings
> = VP Avionics Sales
> MIDWEST AVIONICS
> 200 Hardy Roberts = Dr
> PO Box 219
> West Paducah,KY 42086
> 877-904 = 9966
> Cell; 727 858-1772
> FAX:270 744 3466
> tom@midwestaviation.net
= > Online Store
> www.midwest-avionics.com
> 
> 
> 
> --
> = Homepage:  http://www.flyrotary.com/
> = Archive and UnSub: http:/= /mail.lancaironline.net:81/lists/flyrotary/List.html


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