X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from sccrmhc13.comcast.net ([204.127.202.64] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 913733 for flyrotary@lancaironline.net; Mon, 25 Apr 2005 09:01:10 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.202.64; envelope-from=kenpowell@comcast.net Received: from 204.127.205.150 ([204.127.205.150]) by comcast.net (sccrmhc13) with SMTP id <2005042513001801600ah6use>; Mon, 25 Apr 2005 13:00:23 +0000 Received: from [166.102.160.133] by 204.127.205.150; Mon, 25 Apr 2005 13:00:16 +0000 From: kenpowell@comcast.net To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Apex Slot Wear/ Grinding for 3mm Seals Date: Mon, 25 Apr 2005 13:00:16 +0000 Message-Id: <042520051300.9212.426CE9DE0004ACDE000023FC220075115004040A99019F020A05@comcast.net> X-Mailer: AT&T Message Center Version 1 (Dec 17 2004) X-Authenticated-Sender: a2VucG93ZWxsQGNvbWNhc3QubmV0 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_9212_1114434016_0" --NextPart_Webmail_9m3u9jl4l_9212_1114434016_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Hi Lynn, I didn't realize that you kept revs above 8000 rpm for an entire race (and thus an entire season). Is this why you tell us that an engine with 9.4 rotors will hold 7400 rpm practically forever and that 7400 rpm just isn't that high for a rotary? (proven on the track under racing conditions!!!) You have been telling me this for 4 years and I still have a little trouble believing that these engines rev so effortlessly. This is sorta (Arkie word) hard to comprehend because I KNOW what will happen to my Mustang motor if it were to see 7400 rpm. It's humorous that even after learning about the forces involved and the capabilities of the rotary how hard it is to not let your thinking be constrained by the limitations of an unrelated engine type (auto and aircraft). Ken Powell Bryant, Arkansas 501-847-4721 -------------- Original message -------------- > In a message dated 04/24/2005 02:53 Central Daylight Time, > finn.lassen@verizon.net writes: > > << Ok, so grooves don't wear in your application (car racing) with proper > lubrication and air filtering. > > What HP range would you estimate your engines spend 90% of their time in? > > Finn > >> > > > We record and review each session on a video camera that watches a special > set of gages. I show the driver where he has dropped off of the power and he > complains about having to shift up here or down there and so on. We may then > change rear end ratios to get him out of a shift in a fast turn or such. > > He is attempting to stay above 8,000 RPM. Max power is at 9,400 RPM and > shifts are at 9,600 RPM. > > HP at 8,000 is 223 to 225. Max power is 244 to 245 HP at 9,400 RPM. > > Lynn E. Hanover > > >> Homepage: http://www.flyrotary.com/ > >> Archive: http://lancaironline.net/lists/flyrotary/List.html --NextPart_Webmail_9m3u9jl4l_9212_1114434016_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

Hi Lynn,

I didn't realize that you kept revs above 8000 rpm for an entire race (and thus an entire season). Is this why you tell us that an engine with 9.4 rotors will hold 7400 rpm practically forever and that 7400 rpm just isn't that high for a rotary? (proven on the track under racing conditions!!!) You have been telling me this for 4 years and I still have a little trouble believing that these engines rev so effortlessly. This is sorta (Arkie word) hard to comprehend because I KNOW what will happen to my Mustang motor if it were to see 7400 rpm. It's humorous that even after learning about the forces involved and the capabilities of the rotary how hard it is to not let your thinking be constrained by the limitations of an unrelated engine type (auto and aircraft).

Ken Powell
Bryant, Arkansas
501-847-4721

-------------- Original message --------------

> In a message dated 04/24/2005 02:53 Central Daylight Time,
> finn.lassen@verizon.net writes:
>
> << Ok, so grooves don't wear in your application (car racing) with proper
> lubrication and air filtering.
>
> What HP range would you estimate your engines spend 90% of their time in?
>
> Finn
> >>
>
>
> We record and review each session on a video camera that watches a special
> set of gages. I show the driver where he has dropped off of the power and he
> complains about having to shift up here or down there and so on. We may then
> change rear end ratios to get him out of a shift in a fast turn or such.
>
> He is attempting to stay above 8,000 RPM. Max power is at 9,400 RPM and
> shifts are at 9,600 RPM.
>
> HP at 8,000 is 223 to 225. Max power is 244 to 245 HP at 9,400 RPM.
>
> Lynn E. Hanover
>
> >> Homepage: http://www.flyrotary.com/
> >> Archive: http://lancaironline.net/lists/flyrotary/List.html

--NextPart_Webmail_9m3u9jl4l_9212_1114434016_0--