Press-Fit Piston Air Engine

Small two-stroke pneumatic engine, ~1000 rpm when blown through hard! Everything presses together, only sandpaper!
20
189
1
948
updated April 2, 2024

Model files

1cylMINI - v0.3mf
1cylMINI - v0.3mf
complete original print before slight revisions, works but requires more sanding/cutting
953 kB  |  April 2, 2024
1-2cylMINI - b21-42 - 1cyl - wristPin - V1.stl
1-2cylMINI - b21-42 - 1cyl - wristPin - V1.stl
print vertically with pointed side on bedplate
29 kB  |  April 2, 2024
1-2cylMINI - b21-42 - 1cyl - flywheel-crank - V1wVCT.stl
1-2cylMINI - b21-42 - 1cyl - flywheel-crank - V1wVCT.stl
(B) this version has a pin on the end for the attached (or your own designed) cam to slide over
333 kB  |  April 2, 2024
1-2cylMINI - b21-42 - 1cyl - crankHolder(X2) - V1.stl
1-2cylMINI - b21-42 - 1cyl - crankHolder(X2) - V1.stl
print 2x with angular cutout facing up
116 kB  |  April 2, 2024
1-2cylMINI - b21-42 - 1cyl - block-head - V1b.stl
1-2cylMINI - b21-42 - 1cyl - block-head - V1b.stl
15-25% infil, print flat side down
3 MB  |  April 2, 2024
1-2cylMINI - b21-42 - 1cyl - valveBlock - V1c.stl
1-2cylMINI - b21-42 - 1cyl - valveBlock - V1c.stl
print on flat face
59 kB  |  April 2, 2024
1-2cylMINI - b21-42 - 1cyl - piston - V1.stl
1-2cylMINI - b21-42 - 1cyl - piston - V1.stl
print on flat face
133 kB  |  April 2, 2024
1-2cylMINI - b21-42 - 1cyl - cam - V1wVCT.stl
1-2cylMINI - b21-42 - 1cyl - cam - V1wVCT.stl
(B) print ONLY with V1wVCT crankshaft - print with aligning mark facing up
97 kB  |  April 2, 2024
1-2cylMINI - b21-42 - 1cyl - conRod - V1.stl
1-2cylMINI - b21-42 - 1cyl - conRod - V1.stl
one face has a chamfer; print this side down
174 kB  |  April 2, 2024
1-2cylMINI - b21-42 - 1cyl - flywheel-crank-cam - V1noVCT.stl
1-2cylMINI - b21-42 - 1cyl - flywheel-crank-cam - V1noVCT.stl
(A) this version has the cam integrated into the crankshaft - reccomended
326 kB  |  April 2, 2024

Other files

v0_stls.zip
v0_stls.zip
original stls from 3mf, shown in pictures
2 MB  |  April 2, 2024
v1_stls_reccomended.zip
v1_stls_reccomended.zip
modified valve and made it captive inside the head, THERE ARE 2 VERSIONS OF CRANKSHAFT IN ZIP
2 MB  |  April 2, 2024

Model origin

The author marked this model as their own original creation.

License