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3" Burrell motion work

 

3" Burrell motion work


Work started a few weeks ago on the weigh-shaft bracket, a tricky casting to deal with. I made a start by centre drilling both ends for the shaft and then made up a difficult setup in the milling machine to try to hold it square for drilling horizontally. This worked to a certain degree, basically the length means any miss alignment is amplified massively but within a reasonable tolerance I completed it. 

I was then able to turn one end a bit, to stop it looking like an egg. I'm reasonably happy with it, certainly there are probably more out there that look like mine, and maybe some in the bin. I guess if a complete disaster happened it would not be too much trouble to cut the casting up and machine a truly round centre tube and silver solder it back onto the original, to save the day as it not a cheap casting to mess up.    
  
The alignment process prior to drilling 
Often I believe the setup's are as important as the results, because for an archive history of how the part can be tacked, and the final result speaks volumes. Also utilises a few workshop items not commonly used in the machining process and aids my memory in the future of how i did something and did it successfully fit on the miller.

(Right) A photo I have been using for reference purpose thank you to the builder of this engine. 


Until Next month, stay safe, make swarf and be the best you can be. Steve!


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