X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from web83915.mail.sp1.yahoo.com ([69.147.92.125] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with SMTP id 4435740 for flyrotary@lancaironline.net; Wed, 18 Aug 2010 15:13:20 -0400 Received-SPF: none receiver=logan.com; client-ip=69.147.92.125; envelope-from=keltro@att.net Received: (qmail 32477 invoked by uid 60001); 18 Aug 2010 19:12:42 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1282158762; bh=5p4F+vodaH8au/Xdw46VawoWOMSGt2NkB5Bxb2xVtL8=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=MJ20M8CMhL1B0FxHwfr7vETxLK8Zw/Kku1qVnO05WkVXn1dfVlOQRpVx1eoB9ReXg2N4Qv1h4so2e7+WFrfjeTd+1dkGdw4NQun4VWOfC/V0NuhvR2rUU31xWOMTU0yq2FYp+21tlcT1lB3uBOpsTNpprg1KeiM6ItNrCAey6RA= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=att.net; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=AvAIuI6gFzSrMANdnFyBlF6zDcvDXwmZTpIUm4N+3g21HXQVZCNuegKcnMFAof/bCRtXfdWEXiQkDJmiEiWtl6HcIZNfpoCQJIDoJOgcbeSXHL3Z+WV75Q4OIwiEk6x6rPS2NrLQrI+HswyGw59T4b9nSgCuXhROQsQLbdX4TN8=; Message-ID: <840189.32365.qm@web83915.mail.sp1.yahoo.com> X-YMail-OSG: VrUkO6QVM1nWZPHtf4AcqMPUDdOoX.sPp0TXpMRkK9i7AXb ABABSYeh4aG9aafINVcaVGUDUfM_J4siWod5cEnr.1O5TPLyKau9lu45UWfb p3L03ps8pU4G8BcP5Rnz2ZOFjuDVXg1ASIMBkdRqlPL8vreZuqqHSDUBqzGg tc7l4EPyHWWwtTKSARdpqaT5dMKPgEdWWgZDRA8JpVYo18kPiKkoEXBWXvtG nIPqvEkXSkTrKbmytuFgJH0DFLxmGWFVvnJO4mMmldEZxp9s5l.kXvIBnKOx lEW_cKbFNctdqIesFf7un_Fo_8SO7GPrSb1WvqCWL9j6YU9mQXdcu Received: from [208.114.44.91] by web83915.mail.sp1.yahoo.com via HTTP; Wed, 18 Aug 2010 12:12:42 PDT X-Mailer: YahooMailRC/470 YahooMailWebService/0.8.105.279950 References: Date: Wed, 18 Aug 2010 12:12:42 -0700 (PDT) From: Kelly Troyer Subject: Re: [FlyRotary] Re: Turbo Questions To: Rotary motors in aircraft In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-971874749-1282158762=:32365" --0-971874749-1282158762=:32365 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Chris,=0A=C2=A0As you may very well the next to fly "Ahead" of a turbo/13B = refresh=C2=A0the group =0Aon the=0Aspecifics of your turbo.............I kn= ow you have mentioned it in previous =0Aposts but I=0Aam too lazy to look i= t up !!.....................=0A=C2=A0Kelly Troyer=0A"Dyke Delta"_13B ROTARY= Engine=0A"RWS"_RD1C/EC2/EM2=0A"Mistral"_Backplate/Oil Manifold =0A=0A=0A= =0A=0A________________________________=0AFrom: Chris Barber =0ATo: Rotary motors in aircraft = =0ASent: Wed, August 18, 2010 12:47:06 PM=0ASubject: [FlyRotary] Re: Turbo = Questions=0A=0A=0AKelly, =0A=0APlease "livin' up" the list like this often.= =C2=A0 It is why I come here.=C2=A0 I love =0Athis sort of actual applied a= pplication info. It helps me sleep better and be =0Amore secure in my comfo= rt with my overall knowledge, both for my own use and =0Athat of others.=0A= =0AAll the best,=0A=0AChris=0AGSOT=0A=0A________________________________=0A= =0AFrom: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf = of Kelly =0ATroyer [keltro@att.net]=0ASent: Wednesday, August 18, 2010 12:0= 0 PM=0ATo: Rotary motors in aircraft=0ASubject: [FlyRotary] Re: Turbo Quest= ions=0A=0A=0ABob, John and All,=0A=0A=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Well I h= ave bit the bullet and made my decision for a =0Aturbo............After muc= h research, talking to Bob =0A=0Aand John and conferring with a=C2=A0"Turbo= netics" dealer I have ordered a TO4E-50 =0Atrim (compressor wheel), =0A=0Aw= et bearing housing, big shaft "Q" trim (F1-68mm) turbine wheel and=C2=A01.1= 5 a/r =0Aratio turbine housing.........=0A=0A=C2=A0=C2=A0=C2=A0=C2=A0 The d= ecision=C2=A0what size turbine wheel and a/r ratio housing was based on the= =0Afact that the=C2=A0f1-68mm=0Aturbine and 1.15 a/r housing causes less e= xhaust back pressure than the smaller =0Awheel (bigger hole) and=0Awill inc= rease rpm less=C2=A0as you increase altitude as opposed to the F1-65mm whee= l =0Aplus the 1.15 a/r ratio=0Ahousing will=C2=A0slow rpm increase for the = same reason............=0A=0A=C2=A0=C2=A0=C2=A0 The decision to go with the= 50 trim compressor wheel (Like John)=C2=A0verses the =0A60-1=C2=A0wheel (L= ike Bob)=C2=A0was =0A=0Abased=C2=A0the "Flow Maps" of both wheels=C2=A0and = my=C2=A0uneducated opinion that the 50 trim =0Awheel would be running =0A= =0Ain a more efficient area of the flow map base on the "Air Consumption Ch= art" =0A(lbs per min) of the 1.3L 13B =0A=0Athat I submitted to the group i= n a previous post.............Of course for all =0Apractical purposes there= is probably=0Alittle=C2=A0discernible difference between any of these turb= o configurations =0Amentioned.............=0A=0A=C2=A0=C2=A0 At least I hav= e livened up the forum for a while =0A!!............FWIW..................<= :)=0AKelly Troyer=0A"Dyke Delta"_13B ROTARY Engine=0A"RWS"_RD1C/EC2/EM2=0A"= Mistral"_Backplate/Oil Manifold =0A=0A=0A=0A=0A____________________________= ____=0AFrom: "Rogers, Bob J." =0ATo: Rotary motors in air= craft =0ASent: Tue, August 17, 2010 5:20:49 PM= =0ASubject: [FlyRotary] Re: Turbo Questions=0A=0A=0AYes, I used the Jet-Hot= 2000 coating, shown at this link. =0Ahttp://www.jet-hot.com/headercoatings= .html=C2=A0 I think that it is very effective to =0Areduce heat in the engi= ne compartment.=0A=C2=A0=0AIt is only applied at the Oklahoma City facility= .=0A=C2=A0=0ABob=0A=0A________________________________=0A=0AFrom:Rotary mot= ors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of =0AKelly = Troyer=0ASent: Tuesday, August 17, 2010 3:02 PM=0ATo: Rotary motors in airc= raft=0ASubject: [FlyRotary] Re: Turbo Questions=0A=C2=A0=0ABob,=0A=C2=A0 Di= d you have your turbine housing=C2=A0and exhaust pipe coated with heat resi= stant=0Acoating and if so what and where ??.............=0A=C2=A0=0AThanks,= =0A=C2=A0=0AKelly Troyer=0A"Dyke Delta"_13B ROTARY Engine=0A"RWS"_RD1C/EC2/= EM2=0A"Mistral"_Backplate/Oil Manifold =0A=C2=A0=0A=C2=A0=0A=0A____________= ____________________=0A=0AFrom:" Rogers, Bob J. " =0ATo: = Rotary motors in aircraft =0ASent: Mon, August= 16, 2010 10:57:22 AM=0ASubject: [FlyRotary] Re: Turbo Questions=0AKelly,= =0A=C2=A0=0AThere is one pretty good picture of the turbo installation (bef= ore radiator =0Abaffling) on our EAA Chapter 1246 website at:=C2=A0 =0Ahttp= ://www.eaa1246.org/projectsnplanesdisplay.asp?id=3D10&pic=3D190.=C2=A0 Beca= use the =0Aoil drains from the turbo into a sump that is lower than the oil= pan, I must use =0Aan electric pump to transfer the oil back into the engi= ne oil pan.=C2=A0 Attached is =0Aa view from the front, which shows the hos= es and tubing from the turbo =0Acompressor to the intercooler and back to t= he intake manifold.=C2=A0 =0A=0A=C2=A0=0ABob=0A=C2=A0=0A=0A________________= ________________=0A=0AFrom:Rotary motors in aircraft [mailto:flyrotary@lanc= aironline.net] On Behalf Of =0AKelly Troyer=0ASent: Monday, August 16, 2010= 10:02 AM=0ATo: Rotary motors in aircraft=0ASubject: [FlyRotary] Re: Turbo = Questions=0A=C2=A0=0ABob,=0A=C2=A0=C2=A0 I am waiting on a clarification=C2= =A0 from "Turbonetics" as to what size turbine =0Awheel=0Awould=C2=A0turn t= he least rpm as altitude increases.............I know the =C2=A0turbine =0A= housing=0Aa/r ratio is a big factor effecting turbine rpm as=C2=A0we climb = but it is not clear =0Ato me=0Ahow=C2=A0the turbine wheel diameter and trim= factor in.............Air density =0Alessens with=0Aaltitude but=C2=A0I am= not smart enough to know=C2=A0if the larger or smaller turbine =0Awheel=0A= will have the highest rpm because of this factor=C2=A0as we climb ??.......= ..=0A=C2=A0=0A=C2=A0 Perhaps I am being anal about this but and you are pro= bably correct that that =0Athe =0A=0Aeffect of=C2=A0a 3mm diameter=C2=A0dif= ference between the two turbine wheels is slight and =0A=0Aprobably inconse= quential...........If any of our multi-talented group members =0Awould =0A= =0Alike to shine some light on this please jump in here !!..........=0A=C2= =A0=0A=C2=A0 On another note do you happen to have any photos of your 13B/t= urbo =0Ainstallation=0Aduring construction that you would care to share wit= h the group ??..........You =0Ahave=0Aa beautiful (to Rotorheads) and well = thought out installation which from your =0Areport=0Ais working very well a= nd=C2=A0I am sure others of the group would like to =0Aplagiarize.....<:)= =0A=C2=A0=0ABest Regards,=C2=A0=0A=C2=A0=C2=A0=C2=A0=0AKelly Troyer=0A"Dyke= Delta"_13B ROTARY Engine=0A"RWS"_RD1C/EC2/EM2=0A"Mistral"_Backplate/Oil Ma= nifold=0A=C2=A0=0A=C2=A0=0A=0A________________________________=0A=0AFrom:" = Rogers, Bob J. " =0ATo: Rotary motors in aircraft =0ASent: Fri, August 13, 2010 11:49:06 AM=0ASubject: = [FlyRotary] Re: Turbo Questions=0AKelly, =0A=C2=A0=0AI do not know which wh= eel is in my turbo.=C2=A0 I expect the larger wheel (68 mm) to =0Aturn a li= ttle more slowly, since it has a larger surface area to absorb the =0Aexhau= st, but it should not make much difference.=C2=A0 Either one should be OK.= =C2=A0 The =0ATurbonetics people can probably explain the performance diffe= rences between the =0Atwo wheel sizes.=0A=C2=A0=0ABob=0A=C2=A0=0A=0A_______= _________________________=0A=0AFrom:Rotary motors in aircraft [mailto:flyro= tary@lancaironline.net] On Behalf Of =0AKelly Troyer=0ASent: Thursday, Augu= st 12, 2010 3:44 PM=0ATo: Rotary motors in aircraft=0ASubject: [FlyRotary] = Re: Turbo Questions=0A=C2=A0=0ABob,=0A=C2=A0 Thanks much for the info......= ...........Just one more =0Aquestion..............Info from "Turbonetics"= =0Asays the 1.15=C2=A0a/r turbine housing is limited to the F1-65 mm or F1-= 68 mm turbine =0Awheel.......=0A=C2=A0 Do you have info as to what=C2=A0tur= bine wheel was installed in your 60-1 turbo =0A??..............=0A=C2=A0=0A= Thanks Again,=0A=C2=A0=0AKelly Troyer=0A"Dyke Delta"_13B ROTARY Engine=0A"R= WS"_RD1C/EC2/EM2=0A"Mistral"_Backplate/Oil Manifold =0A=C2=A0=0A=C2=A0=0A= =0A________________________________=0A=0AFrom:" Rogers, Bob J. " =0ATo: Rotary motors in aircraft =0ASe= nt: Thu, August 12, 2010 1:39:26 PM=0ASubject: [FlyRotary] Re: Turbo Questi= ons=0AKelly,=0A=C2=A0=0AI limit my takeoff power to no more than 42 =E2=80= =9C of manifold pressure (=E2=80=9CMP=E2=80=9D), =0Ausually just 40=E2=80= =9D .=C2=A0 At altitudes of 5,000 feet and above, I generally run no =0Amor= e than about 36 =E2=80=9C MP (15 GPH) and 180 knots.=C2=A0 Engine RPM is ab= out 5,800.=C2=A0 The =0Aturbo is capable of considerably more boost than th= is, but I have to watch =0Aengine water and oil temps at higher power setti= ngs.=C2=A0 I do not want to run more =0Athan 200 degrees on oil or water an= d prefer 180 degrees.=C2=A0 I can maintain these =0Atemps (even on hot days= ) with cowl flap settings from closed to full open as =0Along as I keep the= power settings at or below those described above.=C2=A0 One day, I =0Aclim= bed to 11,000 feet and my GPS groundspeed (with a slight tailwind) was 213 = =0Aknots.=C2=A0 MP was 36=E2=80=9D, RPM 6,000.=C2=A0 I have a 68=E2=80=9D d= iameter x 84 pitch Prince P-tip =0Afixed pitch prop coupled to the RWS 2.17= /1 reduction unit.=0A=C2=A0=0ABob --0-971874749-1282158762=:32365 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
=0A
Chris,
=0A
 As you may very well the = next to fly "Ahead" of a turbo/13B refresh the group on the
=0Aspecifics of your turbo.............I know you have mentioned it in prev= ious posts but I
=0A
am too lazy to look it up !!.................= ....
 
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"= _RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold =0A

=0A
= =0A
=0A
=0AFrom: Chris Barber <cbarber@texasattor= ney.net>
To: Rotary m= otors in aircraft <flyrotary@lancaironline.net>
Sent: Wed, August 18, 2010 12:47:06 PM
= Subject: [FlyRotary] Re: Turbo= Questions

=0A=0A= =0A
=0A
Kelly,
=0A
 
=0A
Please "livin<= A rel=3Dnofollow>' up" the list like this often.  It is why I come= here.  I love this sort of actual applied application info. It helps = me sleep better and be more secure in my comfort with my overall knowledge,= both for my own use and that of others.
=0A
 
=0A
A= ll the best,
=0A
 
=0A
Chris
=0A=0A
=0A
=0A=0A
F= rom: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf = of Kelly Troyer [keltro@att.net]
Sent: Wednesday, August 18, 2010= 12:00 PM
To: Rotary motors in aircraft
Subject: [FlyRo= tary] Re: Turbo Questions

=0A
=0A
=0A=0A
=0A
Bob, John and All,
=0A
 
=0A
 =     Well I have bit the bullet and made my decision for= a turbo............After much research, talking to Bob
=0A
and J= ohn and conferring with a "Turbonetics" dealer I have ordered a TO4E-5= 0 trim (compressor wheel),
=0A
wet bearing housing, big shaft "Q"= trim (F1-68mm) turbine wheel and 1.15 a/r ratio turbine housing......= ...
=0A
 
=0A
     The decision&= nbsp;what size turbine wheel and a/r ratio housing was based on the fact th= at the f1-68mm
=0A
turbine and 1.15 a/r housing causes less e= xhaust back pressure than the smaller wheel (bigger hole) and
=0A
= will increase rpm less as you increase altitude as opposed to the F1-6= 5mm wheel plus the 1.15 a/r ratio
=0A
housing will slow rpm i= ncrease for the same reason............
=0A
 
=0A
&n= bsp;   The decision to go with the 50 trim compressor wheel (Like= John) verses the 60-1 wheel (Like Bob) was
=0A
ba= sed the "Flow Maps" of both wheels and my uneducated opinion= that the 50 trim wheel would be running
=0A
in a more efficient = area of the flow map base on the "Air Consumption Chart" (lbs per min) of t= he 1.3L 13B
=0A
that I submitted to the group in a previous post.= ............Of course for all practical purposes there is probably
=0A=
little discernible difference between any of these turbo configur= ations mentioned.............
=0A
 
=0A
  = At least I have livened up the forum for a while !!............FWIW.......= ...........<:)
=0A
 
Kelly Troyer
"Dyke Delta"_13B= ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold = =0A

=0A

=0A
=0A
=0AFrom: "Rogers, Bo= b J." <BRogers@FDIC.gov>
To:<= /SPAN> Rotary motors in aircraft <flyrotary@lancaironline.net>Sent: Tue, August 17, 2010= 5:20:49 PM
Subject: [Fl= yRotary] Re: Turbo Questions

=0A=0A=0A
=0A

Yes, I used the Jet-Hot 2000 coating, shown at t= his link. http://www.jet-hot.com/headercoatings.html  I t= hink that it is very effective to reduce heat in the engine compartment.

=0A

 

=0A

I= t is only applied at the Oklahoma City facility.

=0A

 

=0ABob

=0A<= DIV>=0A
<= FONT size=3D3 face=3D"Times New Roman">=0A<= HR tabIndex=3D-1 align=3Dcenter SIZE=3D2 width=3D"100%">=0A=0A

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]= On Behalf Of Kelly Troyer<= BR>Sent: Tuesday, August 17= , 2010 3:02 PM
To: Rotar= y motors in aircraft
Subject: [FlyRotary] Re: Turbo Questions

=0A

 

=0A
=0A
=0A

Bob,

=0A
=0A

  Di= d you have your turbine housing and exhaust pipe coated with heat resi= stant

=0A
=0A

coating a= nd if so what and where ??.............

=0A
=0A<= P class=3DMsoNormal> 

=0A
=0A

Thanks,
 

=0A

Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/E= C2/EM2
"Mistral"_Backplate/Oil Manifold

=0A
=0A

 

=0A
=0A

 

=0A
=0A
=0A
=0A
=0A

From:<= FONT size=3D2 face=3DTahoma> " Rogers, Bob J. " <BRogers@FDIC.gov>
To: Rotary motors in aircraft <flyrotary@lanc= aironline.net>
Sent: = Mon, August 16, 2010 10:57:22 AM
Su= bject: [FlyRotary] Re: Turbo Questions

=0A
= =0A

Kelly,=

=0A

&n= bsp;

=0A

There is one= pretty good picture of the turbo installation (before radiator baffling) o= n our EAA Chapter 1246 website at:  http://www.eaa1246.org/projectsnpl= anesdisplay.asp?id=3D10&pic=3D190.  Because the oil drains from th= e turbo into a sump that is lower than the oil pan, I must use an electric = pump to transfer the oil back into the engine oil pan.  Attached is a = view from the front, which shows the hoses and tubing from the turbo compre= ssor to the intercooler and back to the intake manifold. 

=0A

=  

=0A

= Bob=

=0A

 

=0A
=0A
=0A
= =0A
=0A

From: Rotary motors in aircraft [mailto:flyrotary= @lancaironline.net] On Behalf Of Kelly Troyer
Sent:= Monday, August 16, 2010 10:02 AM
T= o: Rotary motors in aircraft
Subject: [FlyRotary] Re: Turbo Questions

<= /DIV>=0A

 

=0A
=0A
=0A

Bob,

=0A
=0A

   I am waiting on a clarification  from "Turbonet= ics" as to what size turbine wheel

=0A
=0A

would turn the least rpm as altitude increases....= .........I know the  turbine housing

=0A
= =0A

a/r ratio is a big factor effecting turbine rp= m as we climb but it is not clear to me

=0A=0A

how the turbine wheel diameter and trim = factor in.............Air density lessens with

=0A=0A

altitude but I am not smart enough to = know if the larger or smaller turbine wheel

=0A=
=0A

will have the highest rpm because of this= factor as we climb ??.........

=0A
=0A

 

=0A
=0A

  Perhaps I am being anal about this but and you are pro= bably correct that that the

=0A
=0A

effect of a 3mm diameter difference between the two= turbine wheels is slight and

=0A
=0A

probably inconsequential...........If any of our multi-ta= lented group members would

=0A
=0A

like to shine some light on this please jump in here !!.......= ...

=0A
=0A

 

=0A
=0A

  On another n= ote do you happen to have any photos of your 13B/turbo installation<= /FONT>

=0A
=0A

during construction th= at you would care to share with the group ??..........You have

=0A
=0A

a beautiful (to Rotorheads)= and well thought out installation which from your report

=
=0A
=0A

is working very well and I = am sure others of the group would like to plagiarize.....<:)

=0A
=0A

 

=0A
=0A

Best Regards, <= /P>

=0A
=0A

   

=0A

Kelly Troyer
"Dyke Delta"_13B ROTARY Engine=
"RWS"_RD1C/EC2/EM2
<= FONT face=3DArial>"Mistral"_Backplate/Oi= l Manifold<= SPAN style=3D"FONT-FAMILY: Arial">

=0A
=0A

 

=0A
=0A

 

=0A
=0A
=0A
=0A
=0A

From: = " Rogers, Bob J. " <BRogers@FDIC.gov>
To: Rotary motors in aircraft <flyrotary@lancaironli= ne.net>
Sent: Fri, Au= gust 13, 2010 11:49:06 AM
Subject:<= /SPAN> [FlyRotary] Re: Turbo Questions

=0A
=0A

Kelly,

= =0A

 =

=0A

I do not know wh= ich wheel is in my turbo.  I expect the larger wheel (68 mm) to turn a= little more slowly, since it has a larger surface area to absorb the exhau= st, but it should not make much difference.  Either one should be OK.&= nbsp; The Turbonetics people can probably explain the performance differenc= es between the two wheel sizes.

=0A

 

=0A

Bob

=0A

 

=0A
=0A
=0A
=0A
=0A

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly Troyer
Sent: Thursday, August 12, 2010 3:4= 4 PM
To: Rotary motors i= n aircraft
Subject: [Fly= Rotary] Re: Turbo Questions

=0A

=  

=0A
=0A
=0A

Bob,

=0A
=0A

  Thanks much = for the info.................Just one more question..............Info from = "Turbonetics"
says the 1.15 a/r turbine housing is limited to the F= 1-65 mm or F1-68 mm turbine wheel.......

=0A
=0A=

  Do you have info as to what turbine w= heel was installed in your 60-1 turbo ??..............

=0A
=0A

 

=0A<= DIV>=0A

Thanks Again,

=0A=0A

 

=0A

Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_R= D1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold

=0A
= =0A

 

=0A
=0A

 

=0A
=0A
=0A
=0A
=0A

From: " Rogers, Bob J. " <BRogers@FDIC.gov>
To: Rotary motors in aircraft <flyrota= ry@lancaironline.net>
Sent: Thu, August 12, 2010 1:39:26 PM
Subject: [FlyRotary] Re: Turbo Questions

= =0A

Kelly,=

=0A

&n= bsp;

=0A

I limit my t= akeoff power to no more than 42 =E2=80=9C of man= ifold pressure (=E2=80=9CMP=E2=80=9D), usually just 40=E2=80=9D .  At = altitudes of 5,000 feet and above, I generally run no more than about 36 = =E2=80=9C MP (15 GPH) and 180 knots.  Engine RPM is about 5,800. = The turbo is capable of considerably more boost than this, but I have to w= atch engine water and oil temps at higher power settings.  I do not wa= nt to run more than 200 degrees on oil or water and prefer 180 degrees.&nbs= p; I can maintain these temps (even on hot days) with cowl flap settings fr= om closed to full open as long as I keep the power settings at or below tho= se described above.  One day, I climbed to 11,000 feet and my GPS grou= ndspeed (with a slight tailwind) was 213 knots.  MP was 36=E2=80=9D, R= PM 6,000.  I have a 68=E2=80=9D diameter x 84 pitch Prince P-tip fixed pitch prop coupled to the RWS 2.17/1 reduction unit.

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