RE: [Ausloco] And the 422,s.

[Matthew Grass <matthew_grass@yahoo.com.au>]

Hi

Repairing a loco frame is just not that simple. It
depends on the nature of the fracture and the type of
material used in the frames construction. Engineers
need to be consulted to ensure that correct procedure
is followed. Quite often welding produces secondary
hardening in the weld zone meaning that in the future
the frame could fail extremely rapidly with no
warning. 

With proper precautions, a sucessful repair could be
made but economic factors may be important in this
case. However if repaired the frame may still fell the
accelerated effects of fatigue causing more cracking.
An example of this is X35, rolled at Glenorchy approx
1970, repaired and in traffic until approx 1995.
Withdrawn again to due fatigue cracking of the frame.
Although ASR wouldn't expect this long in service I
hope.

Hope this is of interest to some of you.

Matthew Grass




--- "Melanie J. Dennis" <meld.asg@netspeed.com.au>
wrote: > Whether 42205 becomes a donor or a surgery
patient
> depends on the extent of the frame deterioration and
> the locos's overall condition.  A simple fracture is
> 'relatively' easy to grind out and re-weld but if
> the frame is extensively fatigued, then it's
> probably 'goodnight from him'.
> 
> Melanie Dennis
> Australian Steam Group
> 
> -----Original Message-----
> From:	Peter Donaghy [SMTP:PeterDo@als.com.au]
> Sent:	Thursday, 11 May, 2000 11:05 AM
> To:	'Ausloco@egroups.com'
> Subject:	RE: [Ausloco] And the 422,s.
> 
> Supposedly so, that's why it was removed from
> Orange-Dubbo train order
> test workings and replaced by 42207.  But, as the
> discussion has been,
> not all are likely to be rebuilt - some will just
> provide parts, so
> 42205 will be a candidate for this.
> 
> -----Original Message-----
> From: Jamie Fisher [mailto:elmo@pnc.com.au]
> Sent: Thursday, 11 May 2000 11:00 AM
> To: Ausloco@egroups.com
> Subject: Re: [Ausloco] And the 422,s.
> 
> 
> Hi all,
>         Just a query. Doesn't 42205 have a cracked
> frame? I think that
> was
> the reason that it was used for supplying air to
> wagons thet were being
> prepared or fixed. I seem to remember that at one
> stage it was
> permanently
> located in the up yard at Lithgow.
> 
> Regards,
> 
> Jamie
> 
>
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