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Building Stuarts Compound Steam Engine |
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NickG:
Benni, very nice work it looks really pretty. :thumbup: One question though, aren't the cross heads meant to be screwed home onto the shoulders of the rods? If not you might get the pistons hitting the top covers. Worth checking that length. Nick |
saw:
Yes NickG it's very impotante that the lenght is correct. Right now I have only gone after drawing from Stuart but I assume that I need to make some adjustments. :smart: |
NickG:
Yeah, I am sure drawing wouldn't intend it to be like that, have a look on the assembly drawing - I don't think there'll be a gap like on yours. This is where the standard of model engineering drawings fall short or need some interpretation, you can't actually make these things to the drawing and you haven't so far or it wouldn't assemble. More than likely what's happened is you can't actually get to the bottom of the hole with the tap, so it either needs to be drilled and tapped a little deeper, or the thread on the rod needs shortening or a large chamfer put on the end. :thumbup: |
saw:
Wow, it's a miss of me :zap: ...but it's easy to fix. :coffee: Thanks NickG for pointed out :thumbup: |
NickG:
No problem, I don't think it's an easy task to machine a kit from castings and model engineering drawings - especially if there are no instructions. For example, if you were to send out parts to different companies to be manufactured, they would not assemble because model engineering drawings aren't well specified enough, it's up to the machinist to interpret what fit is needed where etc. I've never machined a model from castings yet, I don't think I'd do as good a job as you have - I just happened to notice the gap. Keep up the good work. :thumbup: |
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