[SEL] crosshead problems

[Rupert]

	I'm sure there are enough machinists on the list who would have spoken 
up by now on how to machine a cast-in-place wristpin. A special cutter 
similar to the in block crankshaft cutter Roland posted a link to might 
work after the bulk of the weld bead is ground or filed down to size. I 
think that leaves only one method left. That is, to do it by hand with a 
file and emery cloth but that would be a very tedious process.

Rupert

On 2/25/2011 9:59 AM, Dave Merchant wrote:
> How do you remachine a cast-in-place wristpin?
>
> Dave Merchant
>
>
> At 10:34 PM 2/23/2011, you wrote:
>
>> Dave might be right about the crack being old and not a big problem.  I'm
>> not so sure.  If the wristpin were to fail it would probably be sudden and
>> catastrophic.  First have it magnafluxed (magnetic particle inspection) to
>> determine the extent of the crack and to check for other cracks.  I think
>> that I would look into having the crack welded up then remachine the
>> wristpin.
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>
> Dave Merchant
> kosh at nesys.com
> dmerchant at layerzero.com
>
> http://www.nesys.com
> http://www.nesys.org
> YouTube: SteamCrane
>
> "I've just completed Mike's Nature trick of adding in the real temps
> to each series for the last 20 years (ie from 1981 onwards)
> and from 1961 for Keith's to hide the decline."
>           - Prof. Phil Jones
>           - Director, Climatic Research Unit
>           - School of Environmental Sciences
>           - University of East Anglia
>           - Norwich, UK
>           - To: Michael Mann, Raymond Bradley, Malcolm Hughes
>
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-- 

yvt

Rupert Wenig
Camrose, Alberta, Canada.	

email: rwenig2 at xplornet.com
	
http://users.xplornet.com/~rwenig/Home/