3 Cylinder Air Engine
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An "all" printed compressed air engine. I have ran it up to 80 psi, the only issues are that the hoses pop off, and…
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An "all" printed compressed air engine. I have ran it up to 80 psi, the only issues are that the hoses pop off, and the bearings occasionally pop out. (-1% scale should resolve this)
1.6mm metric hex cap screws and matching nuts
30mm long m3 screws to secure to base
40/45mm m3 screws for valve lifters
small m3 to secure a fidget spinner to the crank, acting as a harmonic balancer.
skateboard bearing- loose press fit.
Crankshaft pieces should be printed vertically using floors and roofs.
Does not use any springs, relies on gravity/pressure to close valves for minimal resistance.
printed on .2 mm nozzle with .1 layer height
O-rings are from dorman part# 799-451
Edit This engine does not require springs below 60 psi. If you plan on using higher pressure a typical pen spring cut in half and slightly stretched will be sufficient, otherwise you will stay encountering valve float issues.
running: https://youtu.be/S18prY_3BXY
assembly: https://youtu.be/9ZK1R5aZ-lg
can no longer find the fidget spinner I used originally, this one is about the closest I could find: https://www.amazon.com/ATESSON-Spinner-Durable-Stainless-Precision/dp/B071V8FS2C/ref=sr_1_38?dchild=1&keywords=cosmic+fidget&qid=1624569857&sr=8-38
Category: Mechanical Toys