Modified Single Cylinder Motor V3

by code4food, published

Modified Single Cylinder Motor V3 by code4food Dec 29, 2012
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3426Views 325Downloads Found in Automotive
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I really liked Sirmakesalot's Single Cylinder Motor V2. His original design is great. However, I wanted to replace the crankshaft bushing with a C clip, making it easier to assemble. That is the only difference on a otherwise wonderful thing!


I printed this with 1.82mm ABS plastic. I also used a Replicator 1 at firmware level 6.2 with acceleration turned on, using defaults. The print will be higher quality if produced at a slower rate, but accelerated mode produces as acceptable output.

Instructions to print this derivative:

1.) Print it!
2.) Assemble in the following order:
a.) There is a connecting shaft that connects the crank handle to the crank shaft. Press the shaft into the hole of the crank handle first. It is a really tight fit, so be patient!

b.) Put piston and piston rod together. Small hole end of piston rod goes into the piston. Use a piece of 3mm filament or, since I used 1.82mm filament to print it (I don't have any 3 mm hanging around), I cut a small piece of wire as a pin to connect the piston head and rod together. Next, slide the end of the piston rod over the end of the crank shaft (see image of step 2b). Slide piston into cylinder, and then press together the crank handle/connecting shaft assembly, the cylinder hole plate, and crank shaft. 

c.) Finally, super glue the small cap onto the end of the crank shaft. Wait for it dry, and then push the C clip onto the crank shaft. See image for completed assembly.

Then crank away! Thanks for Sirmakesalot for making such a cool little motor. This is just my contribution - nothing special!

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You may need to add a little bit of hot glue and grind off some spurs but otherwise is is a really awesome print.