Engines > From Plans
Brian builds a Corliss
Brian Rupnow:
At this point in time I have opened a lot of the individual components and saved them into a new assembly file, adding proper "mates" as the parts were added. This shows me that as the flywheel and crankshaft rotate thru 360 degrees that the piston will travel correctly and remain centered in the cylinder. That is a GOOD thing. Tomorrow I will start changing the things I want to change, and add them into the assembly as I build it.
kvom:
Dashpots close the input valves when there is cutoff by a mechanism that frees the valves momentarily. The cutoff mechanism is difficult to attain in model scale. As shown in your 3D model, the alternative is to have the governor control the timing of the valves.
Brian Rupnow:
The flywheel shown on the original model is 7 1/4" diameter. The largest piece of pipe I have is only 6" diameter. Before I do any actual "building" I will call my steel suppliers tomorrow and see if anyone has a short length of larger diameter pipe. I don't care for the 2" thick baseplate on this existing model, but I have to decide on the flywheel diameter before I start changing anything.
Brian Rupnow:
The cylinder block is 2 1/8" square. I have a chunk of round aluminum here that is 3 1/2" diameter x 3" long, which would allow me to cut a 2 1/8" square out of it. I don't want to make the cylinder from aluminum because it has a high coefficient of friction, but I also have some 1 1/2" diameter cast iron from which I can make a thin walled sleeve and epoxy it into place as a liner. I have to look thru all the build threads on this. I seem to recall reading about someone who did the same thing.
crueby:
On mine I made a center sleeve with blocks around it, since I couldn't turn the full size block easily. May have been others too.
Remember that the valve bores also have turning valves in them, you may want to sleeve them as well.
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