[CAUT] Guide rail pins

Porritt, David dporritt at mail.smu.edu
Tue Mar 16 14:09:50 MDT 2010


No, the old holes are larger than any currently available pins.

dp


David M. Porritt, RPT
dporritt at smu.edu<mailto:dporritt at smu.edu>

From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of wimblees at aol.com
Sent: Tuesday, March 16, 2010 2:51 PM
To: caut at ptg.org
Subject: Re: [CAUT] Guide rail pins


I’m rebuilding a Baldwin R and on removing the corroded and pitted key pins, I discovered that the base of the guide rail pins are 0.177”.  The top (swaged) part is a standard 0.146” but the part that is driven in the key frame is oversized.  Of course no one has replacement pins like this so I’m going to have to make some modifications.

Everything that I’ve thought of so far has looked like a major operation, and will leave lots of opportunity for errors.  Has anyone run into this before?  What did you do?

dave
So the new pins are bigger than the holes? Would it be too difficult to ream out the existing holes?
Wim
-----Original Message-----
From: Porritt, David <dporritt at mail.smu.edu>
To: caut at ptg.org <caut at ptg.org>
Sent: Tue, Mar 16, 2010 9:46 am
Subject: [CAUT] Guide rail pins
I’m rebuilding a Baldwin R and on removing the corroded and pitted key pins, I discovered that the base of the guide rail pins are 0.177”.  The top (swaged) part is a standard 0.146” but the part that is driven in the key frame is oversized.  Of course no one has replacement pins like this so I’m going to have to make some modifications.

Everything that I’ve thought of so far has looked like a major operation, and will leave lots of opportunity for errors.  Has anyone run into this before?  What did you do?

dave


_________________________
David M. Porritt, RPT
3024 County Road 2134
Caddo Mills, TX 75135
dporritt at smu.edu<mailto:dporritt at smu.edu>

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