X-Virus-Scanned: clean according to Sophos on Logan.com From: "Christamarmc" Received: from mail-pd0-f180.google.com ([209.85.192.180] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 6996353 for flyrotary@lancaironline.net; Thu, 24 Jul 2014 04:17:48 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.192.180; envelope-from=christamarmc@gmail.com Received: by mail-pd0-f180.google.com with SMTP id y13so3216366pdi.11 for ; Thu, 24 Jul 2014 01:17:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:references:from:content-type:in-reply-to:message-id:date:to :content-transfer-encoding:mime-version; bh=1X3wMbhR2So/Vi4x3OEH+j5fefQBbbZUS+r/RvfnAl8=; b=tdGkl1PdcYM8WxzdNHDGr7fnivZs027gv4RQLMvivYeyVJvde/Gf22+KvlPF48nmpU yDBg7+EFSBqW+UgQkaRiJtj72yY6HRDQr3/jnxrlBOe9NKvFjuR308SEtnArCbCcTyRW tfX9ThdZDc2syxNf5MyJn0N6lQ5DORYbkoOFkyU9tByv4rU3Nt6mrDjTDfxxcXi2dbSC PCTthSkIpDbBRBr4oR1ky8bxdMw6vmwM2lnhR/mX8pGo1nlhSOCiBgpk3W0fh84AZsXH Xkv38Ao0OjFHMm+imuLngXLnpKhsav/rVMCo9Hm2wKtnABhD7fW1zhCZXErbfcDin+PC RH4g== X-Received: by 10.68.203.132 with SMTP id kq4mr8535617pbc.12.1406189828663; Thu, 24 Jul 2014 01:17:08 -0700 (PDT) Return-Path: Received: from [192.168.0.3] (210.88.215.218.dyn.commander.net.au. [218.215.88.210]) by mx.google.com with ESMTPSA id zn9sm18026120pac.31.2014.07.24.01.17.06 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 24 Jul 2014 01:17:07 -0700 (PDT) Subject: Re: [FlyRotary] Re: Rv7 renises p port References: Content-Type: multipart/alternative; boundary=Apple-Mail-2776C520-C951-4B0B-84DE-53CED3D3F066 X-Mailer: iPad Mail (11D201) In-Reply-To: Message-Id: <837860D3-655D-4750-8052-844BE367DBBD@gmail.com> Date: Thu, 24 Jul 2014 18:17:05 +1000 To: Rotary motors in aircraft Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) --Apple-Mail-2776C520-C951-4B0B-84DE-53CED3D3F066 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi bill Will try again , email won't let me send pics to lancair, if u like send me y= our email and I'll post some pics of what I've done. As per ecu I'm running a microtech ecu which has worked well for quite a whi= le. I don't have a rev limit set so the prop limits the rpm, I don't see over 71= 00 with the current prop. I've installed taller apex seals to help cpe with flex over the open ports o= ver the original renises ones, otherwise engine is stock apart from all orig= inal inductions systems totally removed, just 2 x 2" pipes coming strait out= of the rotor housings, all extra holes blocked off totally. All manifold was custom made by myself with new injector placements. I'm quite impressed with the improvement over what it used to be like, I can= get airborne approx 100 ft earlier now. Cheers Christian Sent from my iPad > On 24 Jul 2014, at 2:01 pm, "Bill Bradburry" = wrote: >=20 > James, > =20 > I don=E2=80=99t know if you are using Tracy=E2=80=99s EC-2 or 3, but it ha= s a rev limiter somewhere around 7500 rpm. I don=E2=80=99t know what would h= appen if you invoke this limiter but it might be scary. :>) I try to limit= my Renesis to about 7200 rpm in order to stay away from the limiter. > =20 > Do you have any pictures of the P Port for the Renesis? Did you substitut= e any parts to do this? > =20 > Bill > =20 > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]=20 > Sent: Wednesday, July 23, 2014 7:45 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: Rv7 renises p port > =20 > I don't know jack about slippage, but I think it is the percentage differe= nce between actual distance traveled and theoretical distance traveled if yo= ur propeller corkscrewed through the air with no thrust. B I found a prop sl= ip calculator online and for 86 inch pitch, 2.85 gear ratio, 7000 rpm, 180 m= ph, I get 10% slip. B Granted the calculator was for boat propellers, but I d= on't think it matters as long as the units are correct. B There has to be so= me slip because there would be no thrust otherwise. B So what is considered a= reasonable or good amount of slip? B Using Bill's numbers 86 inch pitch, 2.= 85 gear ratio, 7000 rpm, 200 mph, I get 0% slip. B That can't be right! > =20 >=20 > On Fri, Jul 4, 2014 at 7:19 AM, Bill Bradburry wrote: > Christian, >=20 > It seems that you have a lot of prop slippage at cruise. B I think that at= > that prop rpm you should be getting 200mph if you had no slippage. >=20 > Bill >=20 > -----Original Message----- > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] > Sent: Thursday, July 03, 2014 4:01 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Rv7 renises p port >=20 > Well hi all > Just thought I'd throw out there the mods I,ve done to the renises in an > rv7'. > Well the p ported engine is now back in the plane and running well, over t= he > standard short manifold that was originally in the plane I have gained > around 400 static rpm, same prop and gearbox combo, 2.85 ratio, this equat= es > to allot more hp at takeoff, just shy of 2300 prop rpm, I'm running a prin= ce > p tip prop at 68" x 86" pitch, > At 8000 ft it is turning 7000 at 180 mph tas which is an improvement of 25= > mph on previous tests, . So next plan is bigger prop and less pitch to let= > it rev to 7500 in strait and level. >=20 > Cheers > Christian > Rv7 renises Aus >=20 >=20 > Sent from my iPad > -- > Homepage: B http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html >=20 >=20 > -- > Homepage: B http://www.flyrotary.com/ > Archive and UnSub: B http://mail.lancaironline.net:81/lists/flyrotary/List= .html > =20 --Apple-Mail-2776C520-C951-4B0B-84DE-53CED3D3F066 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Hi bill
Will try again , ema= il won't let me send pics to lancair, if u like send me your email and I'll p= ost some pics of what I've done.
As per ecu I'm running a microtec= h ecu which has worked well for quite a while.
I don't have a rev l= imit set so the prop limits the rpm, I don't see over 7100 with the current p= rop.
I've installed taller apex seals to help cpe with flex over t= he open ports over the original renises ones, otherwise engine is stock apar= t from all original inductions systems totally removed, just 2 x 2" pipes co= ming strait out of the rotor housings, all extra holes blocked off totally.<= /div>
All manifold was custom made by myself with new injector placement= s.
I'm quite impressed with the improvement over what it used to b= e like, I can get airborne approx 100 ft earlier now.

Cheers
Christian

Sent from my iPad

On 24 J= ul 2014, at 2:01 pm, "Bill Bradburry" <flyrotary@lancaironline.net> wrote:

=

James,

 

I don=E2=80=99t know if you are using <= st1:city w:st=3D"on">Tracy=E2=80= =99s EC-2 or 3, but it has a rev limiter somewhere around 7500 rpm.  I don=E2=80=99t kn= ow what would happen if you invoke this limiter but it might be scary.  :>)  I try to limit my Renesis to about 7200 rpm in order to stay aw= ay from the limiter.

 

Do you have any pictures of the P Port f= or the Renesis?  Did you substitute any parts to do this?

 

Bill

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironli= ne.net]
Sent: Wednesday, July 23, 201= 4 7:45 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Rv7 renises p port

 

I don't know jack about slippage, but I think it is the percentage difference between actual distance traveled and theoretical distance travele= d if your propeller corkscrewed through the air with no thrust. B I found a pr= op slip calculator online and for 86 inch pitch, 2.85 gear ratio, 7000 rpm, 180= mph, I get 10% slip. B Granted the calculator was for boat propellers, but I= don't think it matters as long as the units are correct. B There has to be s= ome slip because there would be no thrust otherwise. B So what is considered a reasonable or good amount of slip? B Using Bill's numbers 86 inch pitch, 2.8= 5 gear ratio, 7000 rpm, 200 mph, I get 0% slip. B That can't be right!

 <= /font>

On Fri, Jul 4, 2014 at 7:19 AM, Bill Bradburry <flyrotary@lancaironline.net<= /a>> wrote:

Christian,

It seems that you have a lot of prop slippage at cruise. B I think that at that prop rpm you should be getting 200mph if you had no slippage.

Bill


-----Original Message-----
From: Rotary motors in aircraft= [mailto:flyrotary@lancaironli= ne.net]
Sent: Thursday, July 03, 2014 4:01 PM
To: Rotary motors in aircraft Subject: [FlyRotary] Rv7 renises p port

Well hi all
Just thought I'd throw out there the mods I,ve done to the renises in an
= rv7'.
Well the p ported engine is now back in the plane and running well, over the=
standard short manifold that was originally in the plane I have gained
around 400 static rpm, same prop and gearbox combo, 2.85 ratio, this equates=
to allot more hp at takeoff, just shy of 2300 prop rpm, I'm running a prince=
p tip prop at 68" x 86" pitch,
At 8000 ft it is turning 7000 at 180 mph tas which is an improvement of 25 mph on previous tests, . So next plan is bigger prop and less pitch to let it rev to 7500 in strait and level.

Cheers
Christian
Rv7 renises Aus


Sent from my iPad
--
Homepage: B http://w= ww.flyrotary.com/
Archive and UnSub:
http://mail.lancaironline.net:81/lists/flyrotary/List.html<= br>

--
Homepage: B http://w= ww.flyrotary.com/
Archive and UnSub: B http://mail.lancaironline.net:81/lists/fly= rotary/List.html

 

= --Apple-Mail-2776C520-C951-4B0B-84DE-53CED3D3F066--