X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-d05.mx.aol.com ([205.188.157.37] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2093334 for flyrotary@lancaironline.net; Sat, 09 Jun 2007 11:10:44 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.157.37; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-d05.mx.aol.com (mail_out_v38_r9.2.) id q.bd5.fb9b450 (58550) for ; Sat, 9 Jun 2007 11:09:55 -0400 (EDT) From: Lehanover@aol.com Message-ID: Date: Sat, 9 Jun 2007 11:09:54 EDT Subject: Re: [FlyRotary] Re: Single rotor video To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1181401794" X-Mailer: 9.0 Security Edition for Windows sub 5366 X-Spam-Flag: NO -------------------------------1181401794 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 6/9/2007 7:57:32 A.M. Eastern Daylight Time, rusty@radrotary.com writes: I could swear that I change it from 15 to 10 degrees, but can't find a record of doing that. I also noted that it took quite a lot of throttle to get 4000 rpm for the video tests, so I'm thinking I never did change it. Can't wait to try it with a more reasonable pitch. Rusty (gotta go fly the Wauchula gyro now) This could just be silly, but how about reducing the torque the engine can produce at lower revs, by backing off the timing and over-leaning the injection system. Once through the problem RPM, then back to ideal power settings. Sell the gyro. We raced on 20 degrees BTDC both leading and trailing for years. Idle settings as low as 13 degrees leading and 5 ATDC trailing have been used. The idea of running with no pitch was to eliminate blade stiffness as a part of the problem. A friend had one of those props on his ultra-light and it touched the chassis on run up, where the wood prop of the same diameter did not. He cut off two inches and all was well. But they are very flexible. Lynn E. Hanover Sell the Gyro ************************************** See what's free at http://www.aol.com. -------------------------------1181401794 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 6/9/2007 7:57:32 A.M. Eastern Daylight Time,=20 rusty@radrotary.com writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#ff0000 size= =3D3>

I could swear that I change= it from=20 15 to 10 degrees, but can't find a record of doing that.  I also note= d=20 that it took quite a lot of throttle to get 4000 rpm for the video tests,=20= so=20 I'm thinking I never did change it.  Can't wait to try it with a more= =20 reasonable pitch. 

Rusty (gotta go fly the Wau= chula gyro=20 now)

This could just be silly, but how about reducing the torque the engine=20= can=20 produce at lower revs, by backing off the timing and over-leaning the inject= ion=20 system. Once through the problem RPM, then back to ideal power settings. Sel= l=20 the gyro. We raced on 20 degrees
BTDC both leading and trailing for years. Idle settings as low as 13=20 degrees leading and 5 ATDC trailing have been used.
 
The idea of running with no pitch was to eliminate blade stiffness as a= =20 part of the problem.
 
A friend had one of those props on his ultra-light and it touched the=20 chassis on run up, where the wood prop of the same diameter did not.
 
 He cut off two inches and all was well. But they are very flexibl= e.=20  
 
Lynn E. Hanover
 
 
 
 
 
 
 
 
 
 
 
 
Sell the Gyro  



See what's free at AOL.com.
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