Return-Path: Received: from smtpauth08.mail.atl.earthlink.net ([209.86.89.68] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 726556 for flyrotary@lancaironline.net; Sat, 12 Feb 2005 16:11:29 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.86.89.68; envelope-from=Dastaten@earthlink.net Received: from [24.238.206.130] (helo=earthlink.net) by smtpauth08.mail.atl.earthlink.net with asmtp (Exim 4.34) id 1D04XL-00016L-MS for flyrotary@lancaironline.net; Sat, 12 Feb 2005 16:10:43 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=simple; s=test1; d=earthlink.net; h=Message-ID:Date:From:Reply-To:User-Agent:X-Accept-Language:MIME-Version:To:Subject:References:In-Reply-To:Content-Type; b=iSvYYUUGEHpaeXXPDPKMetjmQTc8tlPsEbVB2rhrjOdOSLKgFcd90yuiO8RxDw4a; Message-ID: <420E6FD1.4020409@earthlink.net> Date: Sat, 12 Feb 2005 15:06:25 -0600 From: David Staten Reply-To: Dastaten@earthlink.net User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: RD-1x input shaft pilot References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------030604040409090502030601" X-ELNK-Trace: 9a30bff84e6cb88f95c85d38d22416599ef193a6bfc3dd489bdac61b9876028626b69d085f4f7025667c3043c0873f7e350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 24.238.206.130 This is a multi-part message in MIME format. --------------030604040409090502030601 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Thanks for the follow up, Tracy.. In any event all I really did was take down the rough edge from where either the Dremel or the screwdriver used to collapse the bearing race had marred the inner face of the crankshaft recess. Dave Tracy Crook wrote: > There is no relative rotation between pilot on input shaft and pilot > hole in crankshaft BUT The input shaft pilot should be a close fit > because it keeps the rear of the input shaft properly aligned. Don't > wallow it out indiscriminately. A small groove in one side (from the > dremmel operation) will not hurt. > > Tracy > > > The next chore was the removal of the pilot bearing. We > had tried removal from several approaches without success.. The > Harbor > Freight pilot bearing puller is a smidge too large to go into the > bearing hole... finally I re-read the RD1-B install manual and it > mentioned that a dremel has been used in the past for stubborn > ones. I ended up extracting the individual needles with a scalpel > and > needlenose pliers, collapsed the inner race and yanked it out, then > ended up using a dremel to gouge the outer race, then collapsed IT as > well.. Infortunately this gouged the inside of the bearing > channel in > the process, so I drum sanded rough spots until it was finger smooth. > The PSRU pilot shaft was able to fit in without difficulty. > My understanding of the bearing removal is that it doesn't have > to be smooth, just give clearance for the pilot shaft since the > shaft does not revolve in the bearing hole. Correct? I had a > slight drag when the re-drive was rotated so dremelled the hole > with a stone to give more clearance. What I don't understand is, > why would there appear to be runout at the pilot shaft of the RD-1? > Wendell > > --------------030604040409090502030601 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Thanks for the follow up, Tracy.. In any event all I really did was take down the rough edge from where either the Dremel or the screwdriver used to collapse the bearing race had marred the inner face of the crankshaft recess.

Dave

Tracy Crook wrote:

There is no relative rotation between pilot on input shaft and pilot hole in crankshaft BUT The input shaft pilot should be a close fit because it keeps the rear of the input shaft properly aligned. Don't wallow it out indiscriminately. A small groove in one side (from the dremmel operation) will not hurt.

Tracy

The next chore was the removal of the pilot bearing. We
had tried removal from several approaches without success.. The Harbor
Freight pilot bearing puller is a smidge too large to go into the
bearing hole... finally I re-read the RD1-B install manual and it
mentioned that a dremel has been used in the past for stubborn ones. I ended up extracting the individual needles with a scalpel and
needlenose pliers, collapsed the inner race and yanked it out, then
ended up using a dremel to gouge the outer race, then collapsed IT as
well.. Infortunately this gouged the inside of the bearing channel in
the process, so I drum sanded rough spots until it was finger smooth.
The PSRU pilot shaft was able to fit in without difficulty.
My understanding of the bearing removal is that it doesn't have to be smooth, just give clearance for the pilot shaft since the shaft does not revolve in the bearing hole. Correct? I had a slight drag when the re-drive was rotated so dremelled the hole with a stone to give more clearance. What I don't understand is, why would there appear to be runout at the pilot shaft of the RD-1?

Wendell

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