X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-dupuy.atl.sa.earthlink.net ([209.86.89.62] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2191012 for flyrotary@lancaironline.net; Sat, 21 Jul 2007 08:20:29 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.62; envelope-from=jerryhey@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=N9EyhGJf69nHEMoi1zYaWXrlNidqnOUc8eN6vpCd8athNETWa+ZCNk8YT2KA/VNG; h=Received:Mime-Version:In-Reply-To:References:Content-Type:Message-Id:From:Subject:Date:To:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [71.49.145.6] (helo=[192.168.0.101]) by elasmtp-dupuy.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1ICDw7-00037d-Fw for flyrotary@lancaironline.net; Sat, 21 Jul 2007 08:19:51 -0400 Mime-Version: 1.0 (Apple Message framework v752.3) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-1-554758823 Message-Id: <8E753D01-97B0-460F-912D-654A8A6B5DAF@earthlink.net> From: Jerry Hey Subject: Re: [FlyRotary] Re: carbs vs efi Date: Sat, 21 Jul 2007 08:19:48 -0400 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.752.3) X-ELNK-Trace: 8104856d7830ec6b1aa676d7e74259b7b3291a7d08dfec79259f50e2c11d6e20a8a3fecc79a94377350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 71.49.145.6 --Apple-Mail-1-554758823 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed George, the web site says $326.00. You might want to compare the aero carb which is similar. http://www.aeroconversions.com I will be looking at both at Oshkosh on Tuesday and Wednesday next week. Jerry Jerry On Jul 20, 2007, at 10:06 PM, George Lendich wrote: > > I have been surprised at the recent flurry of carb postings. I > assumed that everyone was doing EFI. having experienced total > electrical failure in march on a trip to the Bahamas I was thinking > a lot about that Neanderthal carb bolted under my O320 and the > magnetos, all unaware of what was going on in the radio, GPS, and > nav lights departments. the reality is that you don't want a > reserve battery to get you to the ground safely, you want to get to > the Bahamas and back and THEN look into what's wrong. > my questions are "how much power/performance is lost with a carb, > and which carbs can do manual mixture?". is it stupid to ask if > the Lycoming carb could run a 13B? someone mentioned Harley carbs > having a good history of rough service. what about marvel/ > schebler? is this question heresy? :-) isn't efi a bit of > overkill for an engine that basically runs at 100% power, 75% power > and idle? scanning thru the archives I see a lot of postings > regarding mixture, mapping, abrupt failures and such. does this > complexity buy us 5%, 20%? the question of turbo-charging seems to > beg similar line of questioning. kevin > > Kevin, > It's probably my fault, with a number of chaps helping me out with > information. > My Buddy Bill Jepson will tell you nothing beats EFI and when it's > running well, he's absolutely right! > Not only that it is the best for fuel efficiency, leaning reading > fuel flow etc. etc. > However I'm developing a single rotor and looking at all sorts of > issues including cost effectiveness of less elaborate > installations. I'm also not keen on high pressure > fuel under the cowl. > Most importantly I'm not an electronics person and seeing the > problems experienced by others has me more than a little nervous, > in regard to EFI. > Of course I know very little about carbies, so their helping me > with this as well. > The Revmaster might be the choice for me, but I'm awaiting the > sticker shock! > George ( down under) > --Apple-Mail-1-554758823 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1 George,=A0 the web site says = $326.00.=A0 You might want to compare the aero carb which is = similar.=A0=A0http://www.aeroconversions.com=
I will be looking at both at Oshkosh on Tuesday and Wednesday next = week.=A0 Jerry


Jerry






On Jul 20, = 2007, at 10:06 PM, George Lendich wrote:

=A0
I have been surprised at the = recent flurry of carb postings.=A0 I assumed that everyone was doing = EFI.=A0 having experienced total electrical failure in march on a trip = to the Bahamas I was thinking a lot about that Neanderthal carb bolted = under my O320 and the magnetos, all unaware of what was going on in the = radio, GPS,=A0and nav lights departments.=A0=A0=A0 the reality is that = you don't want a reserve battery to get you to the ground safely, you = want to get to the Bahamas and back and THEN look into what's = wrong.
my = questions are "how much power/performance is lost with a carb, and which = carbs can do manual mixture?".=A0 is it stupid to ask if the Lycoming = carb could run a 13B?=A0 someone mentioned Harley carbs=A0having a=A0good = history of rough service.=A0 what about marvel/schebler?=A0 is this = question heresy? :-)=A0 isn't efi a bit of overkill for an engine that = basically runs at 100% power, 75% power and idle?=A0 scanning thru the = archives I see a lot of postings regarding mixture, mapping, abrupt = failures and such.=A0 does this complexity buy us 5%, 20%?=A0 the = question of turbo-charging seems to=A0beg similar line of = questioning.=A0=A0=A0 kevin
=A0
It's = probably my fault, with a number of chaps helping me out with = information.
My = Buddy Bill Jepson will tell you nothing beats EFI and when it's running = well, he's absolutely right!
Not only that it is the best for=A0 fuel efficiency, leaning = reading fuel flow etc. etc.
However I'm developing a single rotor and looking at all = sorts of issues including cost effectiveness of less elaborate = installations. I'm also not keen on high = pressure
fuel = under the cowl.
Most importantly I'm not=A0an electronics person and seeing the = problems experienced by others has me more than a little nervous, in = regard to EFI.
Of course I know very little about carbies, so their helping me = with this as well.
The Revmaster might be the choice for me, but I'm awaiting the = sticker shock!
George ( down under)


= --Apple-Mail-1-554758823--