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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-892712@logan.com>
Subject: Re: [FlyRotary] RD-1C Dissasembly Thoughts
Date: Thu, 22 Dec 2005 14:48:00 -0500
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Bill, I would hesitate to drill more holes in that area as it is a sealing 
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 
about 1/2" from the mount plate (but NOT all the way through into the oil 
filled chamber).  Then a pry bar can be inserted between bolt/stud you place 
in the hole and the mounting plate.

2.  I got a piece of angle iron, drilled two holes that matched holes in the 
prop flange and then got a 3/4" dia threaded rod and a couple of nuts and 
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 
insert the thread rod into one of the nuts, place that end into a washer and 
then into the 1" pipe. The end of the 1" pipe is braced against the mounting 
plate.    I then rotate the nut which causes the threaded rod to push on the 
angle iron attached to prop flange and the seal is broken.  Sort of over 
kill when I saw what Dave did.

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

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

FWIF

Ed

.----- Original Message ----- 
From: "Bill Dube" <BillDube@KillaCycle.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
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'
>
>
>
>
> -- 
> Bill Dube'
> BillDube@KillaCycle.com
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/
>