X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail27.syd.optusnet.com.au ([211.29.133.168] verified) by logan.com (CommuniGate Pro SMTP 5.1.2) with ESMTPS id 1550574 for flyrotary@lancaironline.net; Fri, 10 Nov 2006 02:12:31 -0500 Received-SPF: none receiver=logan.com; client-ip=211.29.133.168; envelope-from=lendich@optusnet.com.au Received: from george (d220-236-72-201.dsl.nsw.optusnet.com.au [220.236.72.201]) by mail27.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id kAA7C29L020582 for ; Fri, 10 Nov 2006 18:12:03 +1100 Message-ID: <012601c70497$8768beb0$c948ecdc@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Single Rotor Date: Fri, 10 Nov 2006 17:12:04 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0123_01C704EB.57EACDA0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0647-0, 09/11/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0123_01C704EB.57EACDA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dave,=20 Richard will answer this one, but my belief is that the single is = similar to a 4 cylinder engine and therefore the damper for those are = adequate. I believe Richard is using a BMW type. George ( down under)=20 Hi Richard, I have been following your single rotor for some years now; glad to = see you are getting the hp up. However the reported sharp torque pulse = has me worried; what has your experience been with the torque pulse with = the single? Best Regards, Dave McCandless Europa XS On 10, Nov , at 11:21 AM, Richard Sohn wrote: Have been running the one rotor on p-port for a while. Aiming for = 115hp per rotor on 12A housings at 7500RPM(be happy with 100hp in the = end). These estimates should give 150hp for 13B housings, more likely = 130, making 260 for a 13B. I know this is worse than other p-port = proponents predict, but this is what I am working toward. If more power = (over stock) is the issue, p-port is the solution, also simplicity. I = have not found any real negatives, for air craft use, in it. =20 Richard Sohn N-2071U ------=_NextPart_000_0123_01C704EB.57EACDA0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Dave,

Richard will answer this one, but my = belief is that=20 the single is similar to a 4 cylinder engine and therefore the damper = for those=20 are adequate. I believe Richard is using a BMW type.

George ( down under)

Hi=20 Richard,
I have been following your single rotor for some years = now; glad=20 to see you are getting the hp up. However the reported sharp torque = pulse has=20 me worried; what has your experience been with the torque pulse with = the=20 single?
Best Regards, Dave McCandless Europa XS

On 10, Nov , = at=20 11:21 AM, Richard Sohn wrote:

Have been running the = one=20 rotor on p-port for a while. Aiming for 115hp per rotor on 12A = housings at=20 7500RPM(be happy with 100hp in the end). These estimates should give = 150hp=20 for 13B housings, more likely 130, making 260 for a 13B. I know this = is=20 worse than other p-port proponents predict, but this is what I am = working=20 toward. If more power (over stock) is the issue, p-port is the = solution,=20 also simplicity. I have not found any real negatives, for air craft = use, in=20 it.

Richard=20 Sohn
N-2071U

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