X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [137.118.16.58] (HELO smtp0.av-mx.com) by logan.com (CommuniGate Pro SMTP 5.4.3) with ESMTP id 5360359 for flyrotary@lancaironline.net; Sun, 22 Jan 2012 19:24:32 -0500 Received-SPF: pass receiver=logan.com; client-ip=137.118.16.58; envelope-from=res12@fairpoint.net Received: from MAIN (dflo-66-243-230-252.gtcom.net [66.243.230.252]) (Authenticated sender: res12@fairpoint.net) by smtp0.av-mx.com (Postfix) with ESMTP id 47CCA1C131E for ; Sun, 22 Jan 2012 19:23:57 -0500 (EST) Message-ID: <600E991328BA4E9B955CD073D5D0D484@MAIN> From: "Richard Sohn" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Top 7 reasons for using an auto conversion Date: Sun, 22 Jan 2012 18:23:56 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002A_01CCD933.00F02780" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3538.513 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3538.513 This is a multi-part message in MIME format. ------=_NextPart_000_002A_01CCD933.00F02780 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable I installed a Subaru EA81 in my Avid in 1999. It was my own conversion. = Flew it for 10 years, and am now very close to start flying the one = rotor rotary.=20 My take on the alternative engine is: If cost and ease of maintaining the engine is the single most issue, go = certified. You have to dedicate your self to a lot of learning and patience, if you = want to get it right. Once you got through all that, it certainly is all = enjoyment and pleasure, with never ending, and very close attention to = everything going on in your creation. Richard Sohn N2071U http://www.fairpoint.net/~res12/home.html From: Patrick Panzera=20 Sent: Sunday, January 22, 2012 4:51 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Top 7 reasons for using an auto conversion Here's what I wrote.=20 I was asked to keep the comments short:=20 Top Seven Reasons to Consider an Automobile Conversion 1.. Cost to install. When compared to the cost of a new aircraft = engine, a fully installed and properly functioning automobile engine can = run 25% to 50% of its certified counterpart when compared new-to-new.=20 2.. Cost to rebuild. When rebuilding an auto conversion, it can = typically be brought to zero-time with all new parts for what a used = yellow-tagged aircraft crankshaft costs, that=92s if your core is = serviceable.=20 3.. Cost to operate. Most auto conversions can be operated on = automobile fuel, cutting the per-gallon cost nearly in half. Modern auto = conversions have tight tolerances eliminating the need to add oil = between changes.=20 4.. Cost to maintain. Aircraft spark plugs range from $26 to $60 each. = Automobile plugs are one tenth of that and typically require half as = many. The same can be said for virtually every maintenance item.=20 5.. Convenience. Nearly every part you might need to repair or = maintain your auto conversion can be purchased from any number of = suppliers in your home town, even on Sunday, or are a short drive from = what ever airport you might have landed at.=20 6.. Smoothness. Virtually every auto conversion is noticeably smoother = than its aviation counterpart, reducing fatigue on components and = occupants.=20 7.. Because you can. Why are we building an airplane in the first = place? If all you are after is the performance offered by homebuilt = aircraft, why not just buy one second hand? Most of us build because we = want to build. There=92s a great amount of satisfaction that stems from = standing back and saying, =93I built that.=94 The same applies for an = automobile engine conversion, especially if it=92s never been done = before.=20 And remember, there are a lot of experimental aircraft that were = designed (and proven) from the beginning to use an auto conversion, so = many of the points for a certified engine aren't relevant, and many of = the reasons against an auto conversion also apply to those who would = consider installing an aircraft powerplant where an auto conversion is = specified.=20 ------=_NextPart_000_002A_01CCD933.00F02780 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
I installed a Subaru EA81 in my Avid in 1999. It was my own = conversion.=20 Flew it for 10 years, and am now very close to start flying the one = rotor=20 rotary.
My take on the alternative engine is:
If cost and ease of maintaining the engine is the single most = issue, go=20 certified.
 
You have to dedicate your self to a lot of learning and patience, = if you=20 want to get it right. Once you got through all that, it certainly is all = enjoyment and pleasure, with never ending, and very close attention to=20 everything going on in your creation.
 
Richard=20 Sohn
N2071U

http://www.fairpoint.net/~res12/home.html
 
Sent: Sunday, January 22, 2012 4:51 PM
Subject: [FlyRotary] Top 7 reasons for using an auto=20 conversion
 
Here's=20 what I wrote.=20
I was asked to keep the comments short:=20
 

Top Seven Reasons to Consider an Automobile=20 Conversion

 

  1. Cost to install. When compared to the = cost of a new=20 aircraft engine, a fully installed and properly functioning automobile = engine=20 can run 25% to 50% of its certified counterpart when compared = new-to-new.=20
  2. Cost to rebuild. When rebuilding an auto=20 conversion, it can typically be brought to zero-time with all new = parts for=20 what a used yellow-tagged aircraft crankshaft costs, that=92s if your = core is=20 serviceable.=20
  3. Cost to operate. Most auto conversions = can be=20 operated on automobile fuel, cutting the per-gallon cost nearly in = half.=20 Modern auto conversions have tight tolerances eliminating the need to = add oil=20 between changes.=20
  4. Cost to maintain. Aircraft spark plugs = range from=20 $26 to $60 each. Automobile plugs are one tenth of that and typically = require=20 half as many. The same can be said for virtually every maintenance = item.=20
  5. Convenience. Nearly every part you might = need to=20 repair or maintain your auto conversion can be purchased from any = number of=20 suppliers in your home town, even on Sunday, or are a short drive from = what=20 ever airport you might have landed at.=20
  6. Smoothness. Virtually every auto = conversion is=20 noticeably smoother than its aviation counterpart, reducing fatigue on = components and occupants.=20
  7. Because you can. Why are we building an = airplane in=20 the first place? If all you are after is the performance offered by = homebuilt=20 aircraft, why not just buy one second hand? Most of us build because = we want=20 to build. There=92s a great amount of satisfaction that stems from = standing back=20 and saying, =93I built that.=94 The same applies for an automobile = engine=20 conversion, especially if it=92s never been done before.

And remember, there are a lot of experimental = aircraft that=20 were designed (and proven) from the beginning to use an auto conversion, = so many=20 of the points for a certified engine aren't relevant, and many of = the=20 reasons against an auto conversion also apply to those who would = consider=20 installing an aircraft powerplant where an auto conversion is specified. =


 
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