Engines > From Plans
Elmer's "Tiny"
EricB:
It's a really enjoyable build. I don't know why I put it off for so long. No time like the present!
Today I finished the crank, flywheel, and the base for the column. I remade the crank bearing because it had too much play both inside and out. I made a reamer of the same stock I used for the crank shaft so now it fits nice. I also made a set screw for the flywheel from a 2-56 stainless hex bolt I had left over from another project.
Eric
Roger B:
That's a nice little engine and a good build :praise2: :wine1:
EricB:
Busy day today. First I made the jig and drilled all the passages in the column and the cylinder. Then I cut off the column and installed the base disk, which is one of my mods to the plans, and installed the bearing. Both are close fit and secured with locktite.
Elmer said his spring was salvaged, but from what? I found a thin wire spring and rewound it to fit, then threaded the pivot pin 1-72 and made a nut to hold it all together. I think I have too much spring pressure but the nut gives a small adjustment.
I have everything made except for a proper steam fitting, but I couldn't resist giving it a trial run.
The plan says rounding the outside of the cylinder is optional, but squared as mine is looks wrong. I'm thinking I should have done that after squaring the stock. I may be making another cylinder.
Thanks for the comments, this was a fun one!
Eric
http://www.youtube.com/watch?v=FmAunOyejZM
RReid:
Congratulations on a good looking runner, Eric. Sounds just like mine, done as the first project on my Taig.
Krypto:
The coin brings home how small that little guy is. Interesting design!
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