Return-Path: Received: from capitol.mail.pas.earthlink.net ([207.217.120.180] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 617687 for flyrotary@lancaironline.net; Sat, 22 Jan 2005 14:56:58 -0500 Received-SPF: none receiver=logan.com; client-ip=207.217.120.180; envelope-from=j-winddesigns@thegrid.net Received: from sdn-ap-017ilchicp0487.dialsprint.net ([65.176.169.233] helo=thegrid.net) by capitol.mail.pas.earthlink.net with esmtp (Exim 3.33 #1) id 1CsRMw-00076t-00 for flyrotary@lancaironline.net; Sat, 22 Jan 2005 11:56:26 -0800 Date: Sat, 22 Jan 2005 14:57:15 -0500 Subject: Re: [FlyRotary] Re: Dynos II (was Re: changed to Octane) Content-Type: multipart/alternative; boundary=Apple-Mail-2--732383370 Mime-Version: 1.0 (Apple Message framework v552) From: Jerry Hey To: "Rotary motors in aircraft" In-Reply-To: Message-Id: X-Mailer: Apple Mail (2.552) --Apple-Mail-2--732383370 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=ISO-8859-1; format=flowed Dave PowerSports site is up and running. I just checked it. The=20 address is http://powersportaviation.com I have the photos and=20 comments from ACRE. If you have not seen them, let me know. Jerry P.S. Is there a size limit on each e-mail? If I want to send four or=20= five jpegs is that possible? On Saturday, January 22, 2005, at 02:38 PM, David Staten wrote: > The powersport website is offline (as mentioned in the other thread I=20= > started).. and I am not sure when that exactly happened. So, this=20 > truck axle dyno sounds somewhat attractive.. > =A0 > Rather than making this "flex plate" adapter, it seems workable to put=20= > the PSRU onto the airframe (Tracy's RD 1B) and mount a u-joint/flange=20= > on the axle shaft to couple to the PSRU flange. > =A0 > I need to see what I can come up with parts wise (junkyard I guess)=20 > but the instrumentation end would be interesting. > =A0 > Dave > > Dale Rogers wrote: > > Lynn Hanover < Lehanover@aol.com > wrote: > > > > Paul Yaw cannot charge enough for dyno time. If he stops work on his=20= > engines > to rig up a customer built engine, it will take a bunch of time and=20 > then there > is the possibility that the outside engine is crap and disintigrates=20= > on the > dyno. Then what? > ... > Plus the liability if your project dies on his dyno. > > > > Lynn, > > Those two parts, I understand. However ... > > > > So there is no way a popular engine builder can take time out from=20 > what he's > up to and blow 8 hours of his and his dyno's time. Or at least you=20 > couldn't > afford it if he would. > ... > You pay him at least for 8 hours to get less than one hour of data and=20= > tuning > if it doesn't blow up. > > > > A year ago, when Paul gave me a quick tour of his newly > reconstituted shop (after moving from Tucson to Phoenix) > he actually quoted me a figure for dyno time - basically > describing, as you said, that a session would have to be > scheduled for at least six hours. I figured once I got > the engine built and run in, it would be worth $800 to get > confirmation that I was getting the ponies I was seeking. > Perhaps he thought I was going to buy an engine from him? > I don't think so - considering that I started out asking > about sources for some parts I needed, and talked about > the engine I was building for my "off-road" vehicle. > > I'm assuming that this is a policy change due to his shop > being busy enough now, that he no longer needs the income > from taking in outside work. > > > > A simple chassis dyno is ... > > > > Thank you very much for the idea. It isn't directly > applicable to my situation, because I don't have a car > to use as a "chassis" test bed. However, it did give me an > idea - using a gang of disc brake assemblies, for creating > an engine dyno that might come in at under $1000. > (Actually, a direct coupling to the truck rear-end might > do the job - if the brakes are big enough and I can figure > a way to take the strain reading directly from the axel > housing.) > > Dale R. > COZY MkIV #1254 > > > > > > Homepage: http://www.flyrotary.com/ > Archive: http://lancaironline.net/lists/flyrotary/List.html > > > > > --Apple-Mail-2--732383370 Content-Transfer-Encoding: quoted-printable Content-Type: text/enriched; charset=ISO-8859-1 Dave PowerSports site is up and running. I just checked it. The address is http://powersportaviation.com I have the photos and comments from ACRE. If you have not seen them, let me know. Jerry P.S. Is there a size limit on each e-mail? If I want to send four or five jpegs is that possible? =20 On Saturday, January 22, 2005, at 02:38 PM, David Staten wrote: 0000,0000,0000The powersport website is offline (as mentioned in the other thread I started).. and I am not sure when that exactly happened. So, this truck axle dyno sounds somewhat attractive.. =A0 Rather than making this "flex plate" adapter, it seems workable to put the PSRU onto the airframe (Tracy's RD 1B) and mount a u-joint/flange on the axle shaft to couple to the PSRU flange. =A0 I need to see what I can come up with parts wise (junkyard I guess) but the instrumentation end would be interesting. =A0 Dave Dale Rogers wrote: Lynn Hanover << = 1999,1999,FFFFLehanover@aol.com0= 000,0000,0000 > wrote: 0000,0000,0000 Paul Yaw cannot charge enough for dyno time. If he stops work on his engines=20 to rig up a customer built engine, it will take a bunch of time and then there=20 is the possibility that the outside engine is crap and disintigrates on the=20 dyno. Then what? ... Plus the liability if your project dies on his dyno. Lynn, Those two parts, I understand. However ... So there is no way a popular engine builder can take time out from what he's=20 up to and blow 8 hours of his and his dyno's time. Or at least you couldn't=20 afford it if he would. ... You pay him at least for 8 hours to get less than one hour of data and tuning=20 if it doesn't blow up.=20 A year ago, when Paul gave me a quick tour of his newly=20 reconstituted shop (after moving from Tucson to Phoenix)=20 he actually quoted me a figure for dyno time - basically=20 describing, as you said, that a session would have to be=20 scheduled for at least six hours. I figured once I got=20 the engine built and run in, it would be worth $800 to get=20 confirmation that I was getting the ponies I was seeking. Perhaps he thought I was going to buy an engine from him? I don't think so - considering that I started out asking=20 about sources for some parts I needed, and talked about=20 the engine I was building for my "off-road" vehicle. I'm assuming that this is a policy change due to his shop=20 being busy enough now, that he no longer needs the income=20 from taking in outside work. A simple chassis dyno is ...=20 Thank you very much for the idea. It isn't directly=20 applicable to my situation, because I don't have a car=20 to use as a "chassis" test bed. However, it did give me an=20 idea - using a gang of disc brake assemblies, for creating=20 an engine dyno that might come in at under $1000. =20 (Actually, a direct coupling to the truck rear-end might=20 do the job - if the brakes are big enough and I can figure=20 a way to take the strain reading directly from the axel=20 housing.) Dale R. COZY MkIV #1254 Homepage:=20 = 1999,1999,FFFFhttp://www.flyrotary.com/= 0000,0000,0000 Archive: =20 = 1999,1999,FFFFht= tp://lancaironline.net/lists/flyrotary/List.html0000,0000,0000 0000,0000,0000 = --Apple-Mail-2--732383370--