Author Topic: Tips for scaling a steam/air engine  (Read 637 times)

Offline tinglett

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Tips for scaling a steam/air engine
« on: June 03, 2015, 03:31:12 PM »
Now that George has posted his tiny little horizontal (and previously vertical) engines I've been looking at them and (sorry, this may be heresy) wishing they were a bit bigger.  My skills aren't yet so good to make such a tiny thing, but I *really* like the idea of building engines like that from bar stock.

Searching back I do see a couple questions like this in the forum, including a spreadsheet to help calculate stuff.  But my first question is how critical this might be for going 2x, 3x or maybe even 4x?  If I scale dimensions, including hole diameters, I am sure I'll run into the problem that cross sections and volumes are getting way out of proportion.

I'm guessing cylinder volumes, for example, may be much more critical in IC engines.  I have zero experience there :).  So I'll limit this question to air engines.