X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [65.54.250.73] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 893700 for flyrotary@lancaironline.net; Fri, 23 Dec 2005 10:27:50 -0500 Received-SPF: pass receiver=logan.com; client-ip=65.54.250.73; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 23 Dec 2005 07:27:04 -0800 Message-ID: Received: from 4.171.129.102 by BAY115-DAV1.phx.gbl with DAV; Fri, 23 Dec 2005 15:27:04 +0000 X-Originating-IP: [4.171.129.102] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: RD-1C Dissasembly Thoughts Date: Fri, 23 Dec 2005 10:27:00 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0154_01C607AB.68A7FE80" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.10.0011.1703 Seal-Send-Time: Fri, 23 Dec 2005 10:27:00 -0500 X-OriginalArrivalTime: 23 Dec 2005 15:27:04.0855 (UTC) FILETIME=[5430CA70:01C607D5] This is a multi-part message in MIME format. ------=_NextPart_000_0154_01C607AB.68A7FE80 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ed & Dave's approach will work fine or use the hole drilled in the = spacer method that I use. Pulling the drive straight off is VERY = difficult. I think you could actually hoist the airplane straight up = from the prop flange with no bolts installed in the gear housing. Do be = sure and leave a few bolts with loose nuts to limit side travel when = breaking the seal. =20 To make this operation easier, Don't clean the mating surfaces before = putting the sealant on! I used to do that out of habit but found that = it was not necessary. Now I actually apply a thin coat of oil to the = adapter plate before installing the drive. This makes it much easier to = remove the drive later. I have never had a problem with oil leaks even = when using the oil. Tracy ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Thursday, December 22, 2005 2:48 PM Subject: [FlyRotary] Re: RD-1C Dissasembly Thoughts Bill, I would hesitate to drill more holes in that area as it is a = sealing=20 area. There are several methods folks have come up with. 1. Tracy suggested drilling a 1/4" dia hole in the perimeter of the = casing=20 about 1/2" from the mount plate (but NOT all the way through into the = oil=20 filled chamber). Then a pry bar can be inserted between bolt/stud you = place=20 in the hole and the mounting plate. 2. I got a piece of angle iron, drilled two holes that matched holes = in the=20 prop flange and then got a 3/4" dia threaded rod and a couple of nuts = and=20 washers to fit. I got a short length of 1" dia pipe with one of those = fittings on the end you use to mount it to a concrete pad. The idea = is I=20 insert the thread rod into one of the nuts, place that end into a = washer and=20 then into the 1" pipe. The end of the 1" pipe is braced against the = mounting=20 plate. I then rotate the nut which causes the threaded rod to push = on the=20 angle iron attached to prop flange and the seal is broken. Sort of = over=20 kill when I saw what Dave did. 3. Dave Leonard had the simplest, he got a suitable length of 2x4, = placed=20 one end against the mounting plate and simple took a caw hammer and = using=20 the 2x4 as a place to rest the fulcrum used the claw end to pry on the = prop=20 flange - again putting pulling/sideways load on the housing causing = the seal=20 to break. You definitely want something to help break that seal. I started to = put a=20 threaded rod on each side to pull the casing straight out (not = wanting to=20 accidentally bend anything), but Tracy felt that a side ways load to = break=20 the seal would be less stress on the gear box than my idea of pulling = it=20 straight off. FWIF Ed .----- Original Message -----=20 From: "Bill Dube" = > To: "Rotary motors in aircraft" = > Sent: Thursday, December 22, 2005 1:27 PM Subject: [FlyRotary] RD-1C Dissasembly Thoughts > > I am about to install my RD-1C PSRU (as soon as I can get the = correct > flex plate.) > > I was reading the instructions and there were some warnings about = the > difficulty of breaking the sealant between the drive and the = mounting > plate. I know that at some point, I will need to disassemble the = drive > and it will be difficult to separate the mounting plate from the = drive > housing. > > What would be wrong with adding a few tapped holes between the = existing > holes in the bolt circle of the mounting plate? When is comes time = to > separate the plate, I would just screw in a few bolts into these = holes > and tighten them in sequence. This would push the drive housing away > from the mounting plate in a controlled manner. No hammers, pry = bars, > or bad language required. > > Am I missing something, or is this a good idea? > > Bill Dube' > > > > > --=20 > Bill Dube' > BillDube@KillaCycle.com > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: = http://mail.lancaironline.net/lists/flyrotary/ >=20 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net/lists/flyrotary/ ------=_NextPart_000_0154_01C607AB.68A7FE80 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Ed & Dave's approach will work fine or use the hole drilled in = the=20 spacer method that I use.  Pulling the drive straight off is VERY=20 difficult.  I think you could actually hoist the airplane = straight up=20 from the prop flange with no bolts installed in the gear housing.  = Do be=20 sure and leave a few bolts with loose nuts to limit side travel when = breaking=20 the seal.  
 
To make this operation easier, Don't clean the mating surfaces = before=20 putting the sealant on!  I used to do that out of habit but found = that it=20 was not necessary.  Now I actually apply a thin coat of oil to the = adapter=20 plate before installing the drive.  This makes it much easier = to=20 remove the drive later.   I have never had a problem with oil = leaks=20 even when using the oil.
 
Tracy
----- Original Message -----
From: Ed Anderson
To: Rotary motors in = aircraft
Sent: Thursday, December 22, = 2005 2:48=20 PM
Subject: [FlyRotary] Re: RD-1C=20 Dissasembly Thoughts

Bill, I would hesitate to drill more holes in that area = as it=20 is a sealing
area.   There are several methods folks = have come=20 up with.

1.  Tracy suggested drilling a 1/4" dia hole = in  the=20 perimeter of the casing
about 1/2" from the mount plate (but NOT = all the=20 way through into the oil
filled chamber).  Then a pry bar can = be=20 inserted between bolt/stud you place
in the hole and the mounting=20 plate.

2.  I got a piece of angle iron, drilled two holes = that=20 matched holes in the
prop flange and then got a 3/4" dia threaded = rod and=20 a couple of nuts and
washers to fit.  I got a short length of = 1" dia=20 pipe with one of those
fittings on the end you use to mount it to = a=20 concrete pad.  The idea is I
insert the thread rod into one = of the=20 nuts, place that end into a washer and
then into the 1" pipe. The = end of=20 the 1" pipe is braced against the mounting =
plate.    I then=20 rotate the nut which causes the threaded rod to push on the
angle = iron=20 attached to prop flange and the seal is broken.  Sort of over =
kill=20 when I saw what Dave did.

3.  Dave Leonard had the = simplest, he=20 got a suitable length of 2x4, placed
one end against the mounting = plate=20 and simple took a caw hammer and using
the 2x4 as a place to rest = the=20 fulcrum used the claw end to pry on the prop
flange - again = putting=20 pulling/sideways load on the housing causing the seal
to=20 break.

 You definitely want something to help break that=20 seal.  I started to put a
threaded rod on each side to pull = the=20 casing straight out  (not wanting to
accidentally bend = anything), but=20 Tracy felt that a side ways load to break
the seal would be less = stress on=20 the gear box than my idea of pulling it
straight=20 off.

FWIF

Ed

.----- Original Message ----- =
From:=20 "Bill Dube" <BillDube@KillaCycle.com>To:=20 "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent:=20 Thursday, December 22, 2005 1:27 PM
Subject: [FlyRotary] RD-1C = Dissasembly=20 Thoughts


>
>  I am about to install my RD-1C = PSRU (as=20 soon as I can get the correct
> flex = plate.)
>
>  =20 I was reading the instructions and there were some warnings about = the
>=20 difficulty of breaking the sealant between the drive and the = mounting
>=20 plate. I know that at some point, I will need to disassemble the = drive
>=20 and it will be difficult to separate the mounting plate from the = drive
>=20 housing.
>
>   What would be wrong with adding a = few=20 tapped holes between the existing
> holes in the bolt circle of = the=20 mounting plate? When is comes time to
> separate the plate, I = would just=20 screw in a few bolts into these holes
> and tighten them in = sequence.=20 This would push the drive housing away
> from the mounting plate = in a=20 controlled manner. No hammers, pry bars,
> or bad language=20 required.
>
>   Am I missing something, or is = this a=20 good idea?
>
>   Bill=20 Dube'
>
>
>
>
> --
> Bill = Dube'
>=20 BillDube@KillaCycle.com
&g= t;
>=20 --
> Homepage:  http://www.flyrotary.com/
> = Archive=20 and UnSub:   http://mail.lanca= ironline.net/lists/flyrotary/
>=20


--
Homepage:  http://www.flyrotary.com/
Archi= ve and=20 UnSub:   http://mail.lanca= ironline.net/lists/flyrotary/
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