X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-d21.mx.aol.com ([205.188.144.207] verified) by logan.com (CommuniGate Pro SMTP 5.0c3) with ESMTP id 751878 for flyrotary@lancaironline.net; Thu, 06 Oct 2005 14:38:15 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.144.207; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-d21.mx.aol.com (mail_out_v38_r5.5.) id q.96.315b3752 (15887) for ; Thu, 6 Oct 2005 14:37:21 -0400 (EDT) Received: from FWM-R31 (fwm-r31.webmail.aol.com [152.163.181.135]) by air-id08.mx.aol.com (v107.13) with ESMTP id MAILINID82-3e0f43456ee016f; Thu, 06 Oct 2005 14:37:20 -0400 Date: Thu, 06 Oct 2005 14:37:20 -0400 Message-Id: <8C798BC1E989FA1-135C-82F@FWM-R31.sysops.aol.com> From: wrjjrs@aol.com References: Received: from 66.127.99.234 by FWM-R31.sysops.aol.com (152.163.181.135) with HTTP (WebMailUI); Thu, 06 Oct 2005 14:37:20 -0400 X-MB-Message-Source: WebUI X-MB-Message-Type: User In-Reply-To: X-Mailer: AOL WebMail 1.1.0.14204 Subject: Re: [FlyRotary] Re: counterweights Content-Type: multipart/alternative; boundary="--------MailBlocks_8C798BC1E7017A7_135C_82C_FWM-R31.sysops.aol.com" MIME-Version: 1.0 To: flyrotary@lancaironline.net X-AOL-IP: 152.163.181.135 X-Spam-Flag: YES ----------MailBlocks_8C798BC1E7017A7_135C_82C_FWM-R31.sysops.aol.com Content-Type: text/plain; charset="us-ascii" Ernest, A rotary can be run without a load, that is without a prop and PSRU. You can use dynamic balancing equipment just like when doing a prop balance on the bare engine. (you need a 2 sensor system) This is what is done to a piston engine except they just spin the crank/rotating assembly weighted up to match the rods and pistons. You drill holes to lighten, or press in heavy metal to weight various places in the rotating assembly. On the rotary you can just work with the counter weights. Bill Jepson -----Original Message----- From: Ernest Christley To: Rotary motors in aircraft Sent: Thu, 06 Oct 2005 09:21:19 -0400 Subject: [FlyRotary] Re: counterweights WRJJRS@aol.com wrote: > Dynamic balancing can compensate for the oil and could even be done on > the running engine for those of us with nothing to do! > Bill Jepson Bill, could you give us a quick description of how this is accomplished? At some point in the future, I hope to have this airplane built, then I will be in the enviable position of having nothing to do. "Doesn't shake much" is a relative term, and I don't think a Lycoming should be our starting point for comparison (since my push mower with the chipped blade can beat a lot of them 8*) -- ,|"|"|, | ----===<{{(oQo)}}>===---- Dyke Delta | o| d |o www.ernest.isa-geek.org | -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ ----------MailBlocks_8C798BC1E7017A7_135C_82C_FWM-R31.sysops.aol.com Content-Type: text/html; charset="us-ascii"
Ernest,
A rotary can be run without a load, that is without a prop and PSRU. You can use dynamic balancing equipment just like when doing a prop balance on the bare engine. (you need a 2 sensor system) This is what is done to a piston engine except they just spin the crank/rotating assembly weighted up to match the rods and pistons. You drill holes to lighten, or press in heavy metal to weight various places in the rotating assembly. On the rotary you can just work with the counter weights.
Bill Jepson 
 
-----Original Message-----
From: Ernest Christley <echristley@nc.rr.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thu, 06 Oct 2005 09:21:19 -0400
Subject: [FlyRotary] Re: counterweights

WRJJRS@aol.com wrote: 
 
> Dynamic balancing can compensate for the oil and could even be done on > the running engine for those of us with nothing to do! 
> Bill Jepson  
Bill, could you give us a quick description of how this is accomplished? At some point in the future, I hope to have this airplane built, then I will be in the enviable position of having nothing to do. "Doesn't shake much" is a relative term, and I don't think a Lycoming should be our starting point for comparison (since my push mower with the chipped blade can beat a lot of them 8*) 
 
--   ,|"|"|, | 
----===<{{(oQo)}}>===---- Dyke Delta | 
  o| d |o www.ernest.isa-geek.org | 
 
-- 
Homepage: http://www.flyrotary.com/ 
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