X-Virus-Scanned: clean according to Sophos on Logan.com From: Received: from omr-a011e.mx.aol.com ([204.29.186.59] verified) by logan.com (CommuniGate Pro SMTP 6.1.10) with ESMTPS id 8665471 for flyrotary@lancaironline.net; Wed, 18 May 2016 15:46:19 -0400 Received-SPF: pass receiver=logan.com; client-ip=204.29.186.59; envelope-from=Lehanover@aol.com Received: from mtaomg-mbc01.mx.aol.com (mtaomg-mbc01.mx.aol.com [172.26.221.143]) by omr-a011e.mx.aol.com (Outbound Mail Relay) with ESMTP id DC2BE3800070 for ; Wed, 18 May 2016 15:45:59 -0400 (EDT) Received: from core-mda07g.mail.aol.com (core-mda07.mail.aol.com [172.27.39.7]) by mtaomg-mbc01.mx.aol.com (OMAG/Core Interface) with ESMTP id 6742B38000084 for ; Wed, 18 May 2016 15:45:59 -0400 (EDT) Full-name: Lehanover Message-ID: <19421d.238648ed.446e2076@aol.com> Date: Wed, 18 May 2016 15:45:59 -0400 Subject: Plug hole losses To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_19421d.238648ed.446e2076_boundary" X-Mailer: AOL 9.8 sub 2019 X-Originating-IP: [74.140.106.236] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1463600759; bh=SPcD6hoGhAzW+wWwNAhGaR0PteaFUlUuCqf9GmAOmE0=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=mTOXWF3pkTAkBEB17xRXXoEIvGNkUgUMqunGgfVPBd6fUXinm4+aRmN+xF0NUWD+j HMPBSMzxKcDohuRuFtWa4ya2zc5LBgkQqzNGwO7isZg3CSNks3aAk2p1yH5ZfqsUNy qby3xAOhw+SDG7Dy5iBG2JocRWzV14KebNm2Ui9A= x-aol-sid: 3039ac1add8f573cc6773678 --part1_19421d.238648ed.446e2076_boundary Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en From: =20 Doug Lomheim _flyrotary@lancaironline.net_=20 (mailto:flyrotary@lancaironline.net)=20 =20 =20 =20 =20 =20 Subject: Slits replace spark plug holes? Date: Thu, 28 Apr 2016 20:36:45= =20 +0200 To: Rotary Motors in Aircraft =20 (http://lancair.net/lists/flyrotary/Message/62468-H.txt)=20 (http://lancair.net/lists/flyrotary/Message/62468-P.txt) =20 The host=E2=80=99s voice on this video makes it hard to take it seriously= ; but I=20 wonder if the racing guys have experimented with either of the two ideas= =20 presented=E2=80=A6? https://www.youtube.com/watch?v=3Dm3pCLjHZmhM =20 Doug Lomheim RV-9A 13b; FWF =20 While the apex seal does cross the trailing plug hole and the leading plu= g=20 hole during compression, the time period of exposure is nil even during= =20 starting. Far less when running. So, looking for a power increase with=20 modifications here is not productive. =20 Fuel consumption per horse power hour is not far off of a piston engine= at=20 the same test HP. So, not much to be gained with more compression. Every= =20 fire slot shape has been tried by Mazda and many racers already and there= is=20 little to be had over the stock shape. The engines tune like 2 cycle dirt= =20 bikes. Responding to exhaust lengths/back pressure and inlet lengths.=20 Usually can turn over 9,000 without damage and never throws a rod through= the=20 case. The "inventer" does not have a clue.=20 Lynn E. Hanover=20 --part1_19421d.238648ed.446e2076_boundary Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en

From:=20 Doug Lomheim flyrotary@la= ncaironline.net
Subject:	Slits replace spark plug holes?<= /TD>
Date:	Thu, 28 Apr 2016 20:36:45 +0200<= /TD>
To:	Rotary Motors in Aircraft=20 <flyrotary@lancaironline.net>

The host=E2=80=99s voice on this video makes it= hard to take it=20 seriously; but I wonder if the racing guys have experimented wi= th=20 either of the two ideas presented=E2=80=A6?

https://www.youtube.com/watch?v=3Dm3pCLjHZmhM=20

Doug Lomheim

RV-9A 13b; FWF

While the apex seal does cross the= trailing=20 plug hole and the leading plug hole during compression, the tim= e=20 period of exposure is nil even during starting. Far less when runnin= g.=20 So, looking for a power increase with modifications here is not= =20 productive.

Fuel consumption per horse power ho= ur is not=20 far off of a piston engine at the same test HP. So, not much to be= gained=20 with more compression. Every fire slot shape has been tried by Mazda= and=20 many racers already and there is little to be had over the stock sha= pe.=20 The engines tune like 2 cycle dirt bikes. Responding to exhaust=20 lengths/back pressure and inlet lengths. Usually can turn over 9,000= =20 without damage and never throws a rod through the case. The "invente= r"=20 does not have a clue.

Lynn E.=20 Hanover

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