Engines > From Kits/Castings

Model Engineer Beam Engine - Reeves Kit

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propforward:
I made a video about this component, so it's here in case anyone is interested, complete with chapters so you can skip over things if you want.

It's a half hour and frankly is mostly discussion about how to do the geometry around the tooling ball and the angled surface, but I feel like there tends not to be an appreciation of that kind of thing in a lot of home shops. Well, anyway there it is.


http://www.youtube.com/watch?v=Voe0JZo1JEk

propforward:
I made some bushings. Satisfying, but there isn't much to say about it. Nasty burr on the one which I need to polish off. Ho hum.

55fairlane:
Your engine is coming alone nicely.....are those bushings brass or bronze?  And (because I'm kinda 'tupid) where do they go on this engine

propforward:
Well, slowly slowly. These are the main bearing bushings for the beam pivot - and…….they are junk.

Following our convo yesterday I checked the bores and they are undersize. Did not expect that. I don’t know why reaming using flood coolant would cause that, but I’m going to make these again and re without flood coolant just to see if the bores come out on size.

I could try and re ream these, but I want to test the process. These are ugly anyway. Do over. Same bar, same reamer. See if the use of coolant vs oil makes a difference. You live and learn.

Another lesson - check the bore size before parting off.


I guess there was stuff to say after all.

Michael S.:
But Stuart,
why make new bushings?
They look good. And a little smaller in the bore isn't so bad. You haven't made the shaft for the beam yet, have you?

Michael

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