X-Virus-Scanned: clean according to Sophos on Logan.com From: Received: from omr-m009e.mx.aol.com ([204.29.186.8] verified) by logan.com (CommuniGate Pro SMTP 6.2c1) with ESMTPS id 9593237 for flyrotary@lancaironline.net; Tue, 21 Mar 2017 13:41:15 -0400 Received-SPF: pass receiver=logan.com; client-ip=204.29.186.8; envelope-from=cozygirrrl@aol.com Received: from mtaomg-mcd01.mx.aol.com (mtaomg-mcd01.mx.aol.com [172.26.223.207]) by omr-m009e.mx.aol.com (Outbound Mail Relay) with ESMTP id 1A9923800094 for ; Tue, 21 Mar 2017 13:40:57 -0400 (EDT) Received: from core-aaa04c.mail.aol.com (core-aaa04.mail.aol.com [172.26.125.4]) by mtaomg-mcd01.mx.aol.com (OMAG/Core Interface) with ESMTP id 2A9C238000083 for ; Tue, 21 Mar 2017 13:40:56 -0400 (EDT) Received: from 172.9.147.6 by webprd-m81.mail.aol.com (10.74.55.16) with HTTP (WebMailUI); Tue, 21 Mar 2017 13:40:54 -0400 Date: Tue, 21 Mar 2017 13:40:54 -0400 To: flyrotary@lancaironline.net Message-Id: <15af1f51308-5eb3-1027c@webprd-m81.mail.aol.com> In-Reply-To: References: Subject: Re: [FlyRotary] Re: redrive options MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_76803_888760744.1490118054662" X-MB-Message-Source: WebUI X-MB-Message-Type: User X-Mailer: JAS STD X-Originating-IP: [172.9.147.6] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1490118057; bh=f6ne64N3o/IgufHTps1syCpFv/83Jb1Op3+LXUAoWNA=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=izNA5kfMqePyj/8F76t+T30KxlcLn5wD7km42FFCc/2pJhysa0faNIjA8Q/oo4N50 yOiUYB6UsnI3t7CcDv2V4Jk9jnSAqF/bxiSbTptwol8Ecoe/f1IgTVzryeo0QtmgA6 1QM0Caz5XtuuzdXcaLthHsOQOCUIbBaNKaamzKAE= x-aol-sid: 3039ac1adfcf58d165a8143c ------=_Part_76803_888760744.1490118054662 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable =20 Rotary torque pulses can be very destructive before buying anything specifi= cally=E2=80=8B mention the rotary. If they know anything they will be worri= ed. Bill Jepson =20 Somebody please correct me if I am wrong but I have understood the opposit= e, the rotary engine does not have the 4 bangs per prop revolution of a tra= ditional 4 cylinder aircraft engine which shows as a spiky positive and neg= ative graph when plotted.=20 The output of the rotary is always positive torque in nature and overlappin= g sinusoidal due to the two rotors when the output wave forms are plotted, = hence the smoothness of the rotary. When peak output is plotted it shows an= always positive gentle wave. Chrissi =20 CG Products =20 www.CozyGirrrl.com =20 =20 =20 =20 -----Original Message----- From: William Jepson To: Rotary motors in aircraft Sent: Mon, Mar 20, 2017 7:02 pm Subject: [FlyRotary] Re: redrive options Rotary torque pulses can be very destructive before buying anything specifi= cally=E2=80=8B mention the rotary. If they know anything they will be worri= ed. Bill Jepson On Mar 20, 2017 3:48 PM, "drhyed" wrote: I had brief conversation with them last fall and they designed the gearbox = with the intention of offering higher horsepower options: "We do have plans for a higher horsepower engine. When we designed our gea= rbox we intended to do engines to about 225 hp from the start. Our intent is to do a 155 hp normally aspirated 2 liter and a 200 hp turbo = version" I did not mention a rotary engine specifically though. Jay On Mar 20, 2017, at 5:31 PM, Charlie England = wrote: These guys have been advertising on ebay for a while. I have no idea about = whether they are legit, or whether the drive is suitable for a rotary. The = web page claims 'good up to 225HP', but their target installations are clos= er to half that, so.... http://www.aeromomentum.com/partslist.html Charlie ------=_Part_76803_888760744.1490118054662 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable

Rotary tor= que pulses can be very destructive before buying anything specifically=E2= =80=8B mention the rotary. If they know anything they will be worried.

Bill Jepson

Somebody please correct me if I am wrong but I have = understood the opposite, the rotary engine does not have the 4 bangs per pr= op revolution of a traditional 4 cylinder aircraft engine which shows as a = spiky positive and negative graph when plotted.
The output of the rotary is always positive torque in nature and overlappin= g sinusoidal due to the two rotors when the output wave forms are plotted, = hence the smoothness of the rotary. When peak output is plotted it shows an= always positive gentle wave.

Chrissi =20
CG Products      
 


-----= Original Message-----
From: William Jepson <flyrotary@lancaironline.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Mon, Mar 20, 2017 7:02 pm
Subject: [FlyRotary] Re: redrive options

Rotary torque pulses can be very destructive before buyin= g anything specifically=E2=80=8B mention the rotary. If they know anything = they will be worried.

Bill Jepson

On Mar 20, 2017 3:48 PM, "drhyed" <flyrotary@lancaironline.net> wrote:
I had brief conversation with them last fall and they designed the gea= rbox with the intention of offering higher horsepower options:

"We do have plans= for a higher horsepower engine.  When we designed our gearbox we inte= nded to do engines to about 225 hp from the start.

Our intent is to do a 155 hp normally aspirated 2 liter and a 200 hp turbo = version"

I did not mention a rotary engine specifically though.


Jay

On Mar 20, 2017, at 5:31 PM, Charlie England <flyrot= ary@lancaironline.net> wrote:

These guys have been advertising on ebay for a while. I ha= ve no idea about whether they are legit, or whether the drive is suitable f= or a rotary. The web page claims 'good up to 225HP', but their target insta= llations are closer to half that, so....


Charlie

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