Return-Path: Received: from smtpauth01.mail.atl.earthlink.net ([209.86.89.61] verified) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 817031 for flyrotary@lancaironline.net; Wed, 23 Mar 2005 09:50:50 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.86.89.61; envelope-from=jerryhey@earthlink.net Received: from [65.176.160.45] (helo=earthlink.net) by smtpauth01.mail.atl.earthlink.net with asmtp (Exim 4.34) id 1DE7BI-0005dH-VQ for flyrotary@lancaironline.net; Wed, 23 Mar 2005 09:50:04 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=simple; s=test1; d=earthlink.net; h=Date:Subject:Content-Type:Mime-Version:From:To:In-Reply-To:Message-Id:X-Mailer; b=S0UVHngZ6VtNqCGLivAgg3EJd7lZSYDGCNggZQajbS98MmtImY/65qaAVxAqy4yM; Date: Wed, 23 Mar 2005 09:51:20 -0500 Subject: Re: [FlyRotary] Re: fuel injector size, and redrive losses Content-Type: multipart/alternative; boundary=Apple-Mail-6-138294311 Mime-Version: 1.0 (Apple Message framework v552) From: Jerry Hey To: "Rotary motors in aircraft" In-Reply-To: Message-Id: <04ABBCA2-9BAB-11D9-8DE1-0003931B0C7A@earthlink.net> X-Mailer: Apple Mail (2.552) X-ELNK-Trace: 8104856d7830ec6b1aa676d7e74259b7b3291a7d08dfec799ba264378202cb7748e872474f20fb4b350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 65.176.160.45 --Apple-Mail-6-138294311 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=WINDOWS-1252; format=flowed Mark, Ford Racing is selling a new set of eight for $259.00 so I guess=20= we will wait. Thanks anyway, Jerry On Wednesday, March 23, 2005, at 09:25 AM, Mark R Steitle wrote: > Jerry, > > I bought a set of eight 42# Ford injectors but in the end, wasn=92t = able=20 > to use them and went with the 550=92s..=A0 I gave $320 for the set and=20= > would let them go for my cost. =A0I=92ll split the set if someone else=20= > wants the other four. =A0They have about 5 hours on them.=A0 If you=92re= =20 > interested contact me off line.=A0 > > =A0 > > Mark S. =A0=A0 > > mark.steitle&Austin.utexas.edu (replace &=A0 with @) > > > > From:Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On=20= > Behalf OfJerry Hey > Sent: Wednesday, March 23, 2005 8:12 AM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: fuel injector size, and redrive losses > > =A0 > > Ken, after spending the day calculating injector sizes, I ended up=20 > coming to the same conclusion that you did. The Ford 42 lb are perfect=20= > for my application. P.L. recommended 50 lb injectors but for 225 hp=20 > they are too much in my opinion. Unfortunately Ford Racing is out of=20= > stock. Damn. Jerry > > > > On Tuesday, March 22, 2005, at 06:06 PM, kenpowell@comcast.net wrote: > > =A0 > > Jerry, the Ford injectors are not directly compatible.=A0 Here are the=20= > details:=A0 > > =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 ENGINE SIDE=A0=A0=A0=A0 FUEL RAIL = SIDE > > Ford=A0=A0=A0=A0=A0=A0=A0=A0=A0 0.55"=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0 0.55=A0=A0=A0=A0=A0 > > Mazda=A0=A0=A0=A0=A0=A0 0.65 (with the FAT Mazda rubber ring) > > =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0.435 > > Note that the electrical connector is the same (center spline=20 > top/inside and center lower outside).=A0 So, the Ford injector will = hook=20 > up electrically but the fuel connectors must be different. > > Ken Powell > > Bryant, Arkansas > > 501-847-4721 > > =A0 > > =A0 > > -------------- Original message -------------- > > =A0 > > > Ken, are the Ford injectors interchangeable with the stock Mazda > > > injectors as far as size, plug and so on? If so, do you have a part > > > number? BTW sorry but there is no way you can run a p port at 7500 > > > rpm and only get 225 hp. Can you accept 240? Jerry > > > > > > > > > > > > > > > > > > On Tuesday, March 22, 2005, at 03:48 PM, kenpowell@comcast.net = wrote: > > > > > > > > > But this graph was for a carburated engine so it really > > > proves nothing. Besides, the engine only needs to be as rich as we > > > want to run - you can't hurt the engine by running lean (I know, if > > > you run it into the trees on a 100 F. day that will HURT it!!!). I > > > have not seen any graphs showing power improvement beyond 0.6 on a = NA > > > engine and with very little to be gained by going beyond .55. If > > > anyone can educate me differently please do so (no kidding, I'm=20 > trying > > > to learn). I'm planning on using 42 lb Ford injectors for my P-Port > > > motor, if this isn't enough I want to know (planning on 225 HP at=20 > 7500 > > > RPM). > > > > > > Ken Powell > > > > > > Bryant, Arkansas > > > > > > 501-847-4721 > > > > > > > > > > > > > > > -------------- Original message -------------- > > > > > > > > > v\:* {behavior:url(#default#VML);} o\:* = {behavior:url(#default#VML);} > > > w\:* {behavior:url(#default#VML);} .shape > > > {behavior:url(#default#VML);} st1\:*{behavior:url(#default#ieooui) } > > > > > > Arial0000,0000,8080Rus > > > ty, > > > > > > > > > Arial0000,0000,8080Are > > > you sure you=CCre allowing yourself enough margin on the top end by > > > using .55 bsfc. This chart (snitched from the other list) indicates > > > that .55 is about right up to around 7500, but at 8000 rpm bsfc will > > > be up around .60. What does that do to your hp numbers? > > > > > > > > > > > > Arial0000,0000,8080 > > > smaller> > > > > > > > > > Arial0000,0000,8080Mar > > > k > > > S. > > > > > > > > > Arial0000,0000,8080 > > > smaller> > > > > > > > > >< > > > > > > > > > > > > Arial0000,0000,8080 > > > smaller> > > > > > > > > >< > > > > > > > > Times New Roman > > > > > > > > =A0 > > > > > > From:Rotary motors in > > > aircraft [mailto:flyrotary@lancaironline.net] On Behalf > > > OfRussell Duffy > > > > > > Sent: Tuesday, March 22, 2005 2:25 PM > > > > > > To: Rotary motors in aircraft > > > > > > Subject: [FlyRotary] Re: fuel injector size, and redrive > > > losses > > > > > > > > > Times New Roman > > > > > > > > > Times New RomanRC Engineering's calcs show > > > that you are good to 302 HP at 43 psi fuel pressure, .50 BSFC, and > > > 100% duty cycle. Of course you can't run the injectors at 100% > > > (except maybe briefly like a drag race, not applicable to aircraft). > > > So at 80% duty cycle the 38 lb injectors should be good for 242 HP. > > > Enjoy your idle!!! Your injectors are big enough unless you P-Port > > > and turn at least 8000 RPM. > > > > > > > > > > > > ArialFFFF,0000,0000Hi > > > Ken, > > > > > > > > > Times New Roman > > > > > > > > > ArialFFFF,0000,0000RC > > > Engineering's calc shows the same as the fuel calculator that I > > > posted the other day. Four 38 lb/hr injectors, at 80% duty cycle, = .55 > > > BSFC, should be good for about 220 HP at the flywheel. I imagine = that > > > will be enough for the current engine, but not by a wide margin. I > > > plan to run this engine as high as 8000 if I can, though I'll be > > > amazed if I can get beyond 7500. Don't need no stinkin' P-Port for > > > these rpms :-) > > > > > > > > > Times New Roman > > > > > > > > > ArialFFFF,0000,0000On > > > the fuel spreadsheet that I posted (stolen) the other day, it gives = a > > > HP figure for the flywheel, and rear wheels. The estimate for > > > the power loss due to a manual trans and diff is 15% on this > > > spreadsheet. Anyone know what this amounts to for our redrive, and > > > prop? > > > > > > > > > Times New Roman > > > > > > > > > ArialFFFF,0000,0000Cheers, > > > or> > > > > > > > > > ArialFFFF,0000,0000Rusty > > > (hoping Ed out types me) > > > > > > > > > Times New Roman > > > > > > > > > ArialFFFF,0000,0000 > > > fontfamily> > > > > > > > > > < > > =A0 > --Apple-Mail-6-138294311 Content-Transfer-Encoding: quoted-printable Content-Type: text/enriched; charset=WINDOWS-1252 Mark, Ford Racing is selling a new set of eight for $259.00 so I guess we will wait. Thanks anyway, Jerry On Wednesday, March 23, 2005, at 09:25 AM, Mark R Steitle wrote: = Arial0000,0000,8080Jerry, = Arial0000,0000,8080I bought a set of eight 42# Ford injectors but in the end, wasn=92t able to use them and went with the 550=92s..=A0 I gave $320 for the set and would let them go for my cost. =A0I=92ll split the set if someone else wants the other four. =A0They have about 5 hours on them.=A0 If you=92re interested contact me off line.=A0 = Arial0000,0000,8080=A0 = Arial0000,0000,8080Mark S. =A0=A0 = Arial0000,0000,8080mark.steitle&Austin.utexas.edu (replace &=A0 with @) <
Times New Roman
From:Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf OfJerry Hey Sent: Wednesday, March 23, 2005 8:12 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: fuel injector size, and redrive losses Times New Roman=A0 Times New RomanKen, after spending the day calculating injector sizes, I ended up coming to the same conclusion that you did. The Ford 42 lb are perfect for my application. P.L. recommended 50 lb injectors but for 225 hp they are too much in my opinion. Unfortunately Ford Racing is out of stock. Damn. Jerry = Times New RomanOn Tuesday, March 22, 2005, at 06:06 PM, kenpowell@comcast.net wrote: Times New Roman=A0 Times New RomanJerry, the Ford injectors are not directly compatible.=A0 Here are the details:=A0 Times New Roman=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= ENGINE SIDE=A0=A0=A0=A0 FUEL RAIL SIDE Times New RomanFord=A0=A0=A0=A0=A0=A0=A0=A0=A0 0.55"=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 = 0.55=A0=A0=A0=A0=A0 Times New RomanMazda=A0=A0=A0=A0=A0=A0 0.65 = (with the FAT Mazda rubber ring) Times New = Roman=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= 0.435 Times New RomanNote that the electrical connector is the same (center spline top/inside and center lower outside).=A0 So, the Ford injector will hook up electrically but the fuel connectors must be different. Times New RomanKen Powell Times New RomanBryant, Arkansas=20 Times New Roman501-847-4721 Times New Roman=A0 Times New Roman=A0 Times New Roman-------------- Original message -------------- Times New Roman=A0 Times New Roman> Ken, are the Ford injectors interchangeable with the stock Mazda Times New Roman> injectors as far as size, plug and so on? If so, do you have a part Times New Roman> number? BTW sorry but there is no way you can run a p port at 7500 Times New Roman> rpm and only get 225 hp. Can you accept 240? Jerry Times New Roman> Times New Roman> Times New Roman> Times New Roman> Times New Roman> Times New Roman> On Tuesday, March 22, 2005, at 03:48 PM, kenpowell@comcast.net wrote: Times New Roman> Times New Roman> Times New Roman> But this graph was for a carburated engine so it really Times New Roman> proves nothing. Besides, the engine only needs to be as rich as we Times New Roman> want to run - you can't hurt the engine by running lean (I know, if Times New Roman> you run it into the trees on a 100 F. day that will HURT it!!!). I Times New Roman> have not seen any graphs showing power improvement beyond 0.6 on a NA Times New Roman> engine and with very little to be gained by going beyond .55. If Times New Roman> anyone can educate me differently please do so (no kidding, I'm trying Times New Roman> to learn). I'm planning on using 42 lb Ford injectors for my P-Port Times New Roman> motor, if this isn't enough I want to know (planning on 225 HP at 7500 Times New Roman> RPM). Times New Roman> Times New Roman> Ken Powell Times New Roman> Times New Roman> Bryant, Arkansas = Times New Roman> Times New Roman> 501-847-4721 Times New Roman> Times New Roman> Times New Roman> Times New Roman> Times New Roman> -------------- Original message -------------- Times New Roman> Times New Roman> Times New Roman> v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} = Times New Roman> w\:* {behavior:url(#default#VML);} .shape Times New Roman> {behavior:url(#default#VML);} st1\:*{behavior:url(#default#ieooui) } = Times New Roman> Times New Roman> Arial0000,0000,8080Rus = Times New Roman> ty, Times New Roman> Times New Roman> Times New Roman> Arial0000,0000,8080Are = Times New Roman> you sure you=CCre allowing yourself enough margin on the top end by Times New Roman> using .55 bsfc. This chart (snitched from the other list) indicates Times New Roman> that .55 is about right up to around 7500, but at 8000 rpm bsfc will Times New Roman> be up around .60. What does that do to your hp numbers? Times New Roman> Times New Roman> Times New Roman> Times New Roman> Arial0000,0000,8080 = Times New Roman> smaller> Times New Roman> Times New Roman> Times New Roman> Arial0000,0000,8080Mar = Times New Roman> k Times New Roman> S. Times New Roman> Times New Roman> Times New Roman> Arial0000,0000,8080 = Times New Roman> smaller> Times New Roman> Times New Roman> Times New Roman><< Times New Roman> Times New Roman> Times New Roman> Times New Roman> Arial0000,0000,8080 = Times New Roman> smaller> Times New Roman> Times New Roman> Times New Roman><< Times New Roman> Times New Roman> Times New RomanTimes New Roman Times New Roman> Times New Roman> Times New Roman=A0 Times New Roman> Times New Roman> From:Rotary motors in = Times New Roman> aircraft [mailto:flyrotary@lancaironline.net] On Behalf Times New Roman> OfRussell Duffy = Times New Roman> Times New Roman> Sent: Tuesday, March 22, 2005 2:25 PM Times New Roman> Times New Roman> To: Rotary motors in aircraft Times New Roman> Times New Roman> Subject: [FlyRotary] Re: fuel injector size, and redrive Times New Roman> losses Times New Roman> Times New Roman> Times New Roman> Times New Roman = Times New Roman> Times New Roman> Times New Roman> Times New RomanRC Engineering's calcs show Times New Roman> that you are good to 302 HP at 43 psi fuel pressure, .50 BSFC, and Times New Roman> 100% duty cycle. Of course you can't run the injectors at 100% Times New Roman> (except maybe briefly like a drag race, not applicable to aircraft). Times New Roman> So at 80% duty cycle the 38 lb injectors should be good for 242 HP. Times New Roman> Enjoy your idle!!! Your injectors are big enough unless you P-Port Times New Roman> and turn at least 8000 RPM. Times New Roman> Times New Roman> Times New Roman> Times New Roman> ArialFFFF,0000,0000Hi = Times New Roman> Ken, Times New Roman> Times New Roman> Times New Roman> Times New Roman = Times New Roman> Times New Roman> Times New Roman> ArialFFFF,0000,0000RC = Times New Roman> Engineering's calc shows the same as the fuel calculator that I Times New Roman> posted the other day. Four 38 lb/hr injectors, at 80% duty cycle, .55 Times New Roman> BSFC, should be good for about 220 HP at the flywheel. I imagine that Times New Roman> will be enough for the current engine, but not by a wide margin. I Times New Roman> plan to run this engine as high as 8000 if I can, though I'll be Times New Roman> amazed if I can get beyond 7500. Don't need no stinkin' P-Port for Times New Roman> these rpms :-) Times New Roman> Times New Roman> Times New Roman> Times New Roman = Times New Roman> Times New Roman> Times New Roman> ArialFFFF,0000,0000On = Times New Roman> the fuel spreadsheet that I posted (stolen) the other day, it gives a Times New Roman> HP figure for the flywheel, and rear wheels. The estimate for Times New Roman> the power loss due to a manual trans and diff is 15% on this Times New Roman> spreadsheet. Anyone know what this amounts to for our redrive, and Times New Roman> prop? Times New Roman> Times New Roman> Times New Roman> Times New Roman = Times New Roman> Times New Roman> Times New Roman> ArialFFFF,0000,0000Cheers, = Times New Roman> or> Times New Roman> Times New Roman> Times New Roman> ArialFFFF,0000,0000Rusty = Times New Roman> (hoping Ed out types me) = Times New Roman> Times New Roman> Times New Roman> Times New Roman = Times New Roman> Times New Roman> Times New Roman> ArialFFFF,0000,0000 = Times New Roman> fontfamily> Times New Roman> Times New Roman> Times New Roman> << Times New Roman=A0 = --Apple-Mail-6-138294311--