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| Building Stuarts Compound Steam Engine |
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| saw:
Hello gentlemen. Thanks for nice feedback, it always helps to make the project just a bit better when feedbacks are dropping in. Columns. Now it’s time for the columns, there are five and made of mild steel. According to Mr. John R. Bentley, it would be nice to make some small modifications comparing to Stuarts drawing. They want to have 2BA on both ends, but I am threading 2BA on one end and the other with 4BA because the nuts will be too big with 2BA. With some turns in the lathe will give me the dimensions for threading 4BA. After all columns were finish I drill and thread the nuts. The nuts fit radar good… .. and it don’t looks so bad either. This was just a small update but.. I’ll be back. :headbang: |
| Stilldrillin:
I'm watching quietly, Benni. :wave: I have to say your machined surfaces are much brighter than Rob Wilson's...... Well done! :clap: :clap: Good luck with the build..... :thumbup: David D |
| rudydubya:
A really nice finish on the soleplate Benni. I'm looking forward to following along with your build. Regards, Rudy |
| saw:
Main Bearings Hello Gentlemen Thanks fore nice comments Now it’s time for the main bearings, it’s a little tricky because it’s very impotent that the main bearings are in strait line to the soleplate for the crankshaft. Otherwise it will be a major problem. The first is to milling the edges… … and the bottoms. Then mark out for the center line and the bolt holes. Drilling the bolt holes… …and checking that all fits good together. Then marking up the centerline with a center dub. Milling the top for the nuts to fits better. Is it beginning to looks good? Now with a ¼“ ball nose end mille mile the main bearings for the crankshaft… …and also the soleplate. The last is to drill and reaming for full size. I first drill 6.5 mm then 6.8 then reamed for 7.00 mm. Then drilling for 7.5 and 7.8 and finally reamed for 8.0 mm. And here we go, it begins to looks radar good… …and all dimensions are perfectly suited. I feel radar happy so far, but it’s much work to be done before I can see the end…. :) I’ll be back. |
| NickG:
Hi Benni, I would never have thought of that method for the bearings - unorthodox but looks to have been very effective! Well done |
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