X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from sccrmhc11.comcast.net ([63.240.77.81] verified) by logan.com (CommuniGate Pro SMTP 5.0.6) with ESMTP id 917016 for flyrotary@lancaironline.net; Sat, 07 Jan 2006 20:04:44 -0500 Received-SPF: none receiver=logan.com; client-ip=63.240.77.81; envelope-from=kenpowell@comcast.net Received: from smailcenter45.comcast.net ([204.127.205.145]) by comcast.net (sccrmhc11) with SMTP id <2006010801035701100df558e>; Sun, 8 Jan 2006 01:03:57 +0000 Received: from [68.51.59.7] by smailcenter45.comcast.net; Sun, 08 Jan 2006 01:03:57 +0000 From: kenpowell@comcast.net To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Renesis Horsepower Chart Date: Sun, 08 Jan 2006 01:03:57 +0000 Message-Id: <010820060103.5401.43C064FD0000015200001519220076230204040A99019F020A05@comcast.net> X-Mailer: AT&T Message Center Version 1 (Aug 4 2005) X-Authenticated-Sender: a2VucG93ZWxsQGNvbWNhc3QubmV0 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_5401_1136682237_0" --NextPart_Webmail_9m3u9jl4l_5401_1136682237_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Hi Bobby and Ed, The hot rod guys generally figure 15 to 20 percent. This has always seemed like a lot to me but without a chassis dyno AND an engine dyno I'll just have to take their word for it. Bet Bill Jepson knows for sure!!! Ken Powell Bryant, Arkansas 501-847-4721 C150 / RV-4 under construction -------------- Original message -------------- From: "Ed Anderson" No, Bobby, I really do not have even a wag at HP losses in the drive train. However, I seriously doubt its on the order of 50 HP - that much heat would fry the transmission {:>). Ed ----- Original Message ----- From: Bobby J. Hughes To: Rotary motors in aircraft Sent: Saturday, January 07, 2006 6:11 PM Subject: [FlyRotary] Re: Renesis Horsepower Chart Ed, This is the only chart I have seen that shows flywheel HP. I have seen two or three rear wheel dyno charts that show between 190 and 204 hp. These where with aftermarket exhausts and intake filter. The 204hp was running a Mazdasport Interceptor ECU. This dyno chart did not show rpms but showed MPH. I found one chart that showed peak hp at 178 at 7300 rpms. This was a stock RX8 no mods at 500ft elevation. Racingbeat's test show 8 hp improvement by removing the catalytic converter regardless of muffler and 2 hp by improving the intake. So 204hp seems like a reasonable number with modified exhaust, intake and an aftermarket ECU. Any swags as what the HP loss is to rear wheels? Bobby (making cardboard intake) From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson Sent: Friday, January 06, 2006 2:23 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Renesis Horsepower Chart Correct in what sense, Bobby? It looks similar to charts I saw early on by Mazda showing the output of the Stock Renesis to be 250HP. The trouble began, when other folks started putting the Renesis on dynos and could not get that much power. Mazda later revised its HP for the Renesis downward to the 235 HP level at 9000 rpm. Remember you can peak and tweak a dyno installation to get numbers that you would not normally see in operational usage. Others out there with real dyno experience can verify this. FWIW Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ----- Original Message ----- From: Bobby J. Hughes To: Rotary motors in aircraft Sent: Friday, January 06, 2006 2:35 PM Subject: [FlyRotary] Renesis Horsepower Chart Can anyone verify that this chart is correct or not? Bobby -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ --NextPart_Webmail_9m3u9jl4l_5401_1136682237_0 Content-Type: text/html Content-Transfer-Encoding: 8bit
Hi Bobby and Ed,
The hot rod guys generally figure 15 to 20 percent.  This has always seemed like a lot to me but without a chassis dyno AND an engine dyno I'll just have to take their word for it.  Bet Bill Jepson knows for sure!!!

Ken Powell
Bryant, Arkansas
501-847-4721
C150 / RV-4 under construction
 
-------------- Original message --------------
From: "Ed Anderson" <eanderson@carolina.rr.com>
No, Bobby,  I really do not have even a wag at HP losses in the drive train.  However, I seriously doubt its on the order of 50 HP - that much heat would fry the transmission {:>).
 
Ed
 
----- Original Message -----
Sent: Saturday, January 07, 2006 6:11 PM
Subject: [FlyRotary] Re: Renesis Horsepower Chart

Ed,
 
This is the only chart I have seen that shows flywheel HP. I have seen two or three rear wheel dyno charts that show between 190 and 204 hp. These where with aftermarket exhausts and intake filter. The 204hp was running a Mazdasport Interceptor ECU. This dyno chart did not show rpms but showed MPH. I found one chart that showed peak hp at 178 at 7300 rpms. This was a stock RX8 no mods at 500ft elevation. Racingbeat's test show  8 hp improvement by removing the catalytic converter regardless of muffler and 2 hp by improving the intake. So 204hp seems like a reasonable number with modified exhaust, intake and an aftermarket ECU.   Any swags as what the HP loss is to rear wheels?
 
Bobby
(making cardboard intake)

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Friday, January 06, 2006 2:23 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Renesis Horsepower Chart

 
Correct in what sense, Bobby?
 
It looks similar to charts I saw early on by Mazda showing the output of the Stock  Renesis to be 250HP.  The trouble began, when other folks started putting the
Renesis on dynos and could not get that much power.  Mazda later revised its HP for the Renesis downward to the 235 HP level at 9000 rpm. 
 
Remember you can peak and tweak a dyno installation to get numbers that you would not normally see in operational usage.  Others out there with real dyno experience can verify this.
 
FWIW
 
Ed
 
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
----- Original Message -----
Sent: Friday, January 06, 2006 2:35 PM
Subject: [FlyRotary] Renesis Horsepower Chart

Can anyone verify that this chart is correct or not?
 
Bobby
 

--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/
--NextPart_Webmail_9m3u9jl4l_5401_1136682237_0--