X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from access.aic-fl.com ([204.49.76.2] verified) by logan.com (CommuniGate Pro SMTP 5.1.2) with ESMTP id 1551486 for flyrotary@lancaironline.net; Fri, 10 Nov 2006 08:57:58 -0500 Received-SPF: softfail receiver=logan.com; client-ip=204.49.76.2; envelope-from=unicorn@gdsys.net Received: from b9k4u9 (unverified [204.49.76.59]) by access.aic-fl.com (Rockliffe SMTPRA 4.5.6) with SMTP id for ; Fri, 10 Nov 2006 07:55:00 -0600 Message-ID: <001101c704e1$3f180540$3b4c31cc@b9k4u9> From: "Richard Sohn" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Single Rotor Date: Fri, 10 Nov 2006 07:59:46 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000E_01C7049E.30345B70" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 This is a multi-part message in MIME format. ------=_NextPart_000_000E_01C7049E.30345B70 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable The torque pulses are a concern. I have some runtime now with the donut = damper, which came with the gear box. If it is going to be a problem, I = would switch to a clutch, which is also available for this gear box. Richard Sohn N-2071U ----- Original Message -----=20 From: david mccandless=20 To: Rotary motors in aircraft=20 Sent: Thursday, November 09, 2006 5:30 PM Subject: [FlyRotary] Single Rotor 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_000E_01C7049E.30345B70 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
The torque pulses are a concern. I have = some=20 runtime now with the donut damper, which came with the gear box. If it = is going=20 to be a problem, I would switch to a clutch, which is also available for = this=20 gear box.
 
Richard Sohn
N-2071U
 
 
----- Original Message -----
From:=20 david=20 mccandless
Sent: Thursday, November 09, = 2006 5:30=20 PM
Subject: [FlyRotary] Single = Rotor

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

On=20 10, Nov , at 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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