The Craftmans Shop > Model Engineering
Side Valve i.c. engine from Bar stock
Brian Rupnow:
Well, that's my good (machining) deed for this morning. Now on to more mundane things like mowing the lawn. We've had so much rain this summer the damn lawn is growing like it was still June!!!
Brian Rupnow:
And yes, I do occasionally resort to "crude lashups"----Especially when my main Kurt clone vice lacks just that tiny little bit of opening wide enough to hold the part I want to work on. Why all the layout dye?---I just felt like painting for a change!!!
Brian Rupnow:
And here we have it with the "poll approved' baseplate. In the rear view you can see the two 3/16" diameter alignment pins which fit into holes reamed thru all 3 pieces which bolt together to maintain alignment. You can also see the rear crankshaft bushing which extends 3/8" out past the backplate for my ignition point mounting plate to register on, to give me variable timing while the engine is running. The 3/8" shaft setting in the bushing is just a long piece of 3/8" rod used for a temporary alignment rod for the bushings.
Brian Rupnow:
So far, on this build, I have been making great speed machining the comparatively "easy" parts. I consider the hardest parts will probably be the cylinder and the combustion chamber, so I'm shying away from them so far. I guess that before I go much farther, I better have a crankshaft. It is a two piece crankshaft, which I haven't made before, with a primary half and a follower half. The fact that it is two piece lets me run a con rod with a needle bearing in the big end, which is not split.
Brian Rupnow:
Nothing of real importance machined in the last two days. I moved my son and his family from a rented townhouse into the house I bought two weeks ago. My Gawd!!! I never realized you could collect so much junk after living in a townhouse for ten years. He only had to move about 1/4 mile, so I moved him with my little Ford Ranger, and he had a friend to help with the heavy lifting. I think it took about 16 trips, but we got everything moved between 8 in the morning and four in the afternoon, except the barbecue, which we forgot. Went back and got it this morning. The new house currently looks like a disaster area, but him and his wife can sort that out this week coming. The kids will be able to start in their new schools on Tuesday. I had good intentions of starting work on the crankshaft, but this afternoon I'm too pooped to participate.
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