Oscilating Wobbler Engine

thingiverse

The revamped Pimboden engine features an improved crank design for enhanced power output. The original crank was flawed due to its positioning on the wrong side of the crank, so I made the crank thicker and increased its stroke for better performance. However, the engine may not require a flywheel for proper functioning; you can add it for aesthetic purposes only. For a video demonstration of the original engine running with the faulty crank, visit http://www.youtube.com/watch?v=DsSTE1BJaWI. The redesigned model requires two 608 Skate Bearings or a printed alternative (e.g., https://www.thingiverse.com/thing:43881). To assemble the engine, start by sanding the cylinder's port side with grit papers of varying coarseness for a light-tight fit between the body and cylinder. Next, prepare the first axle piece (either printed or smooth 8mm rod) and insert it into the cylinder before gluing with CA glue. The connection rod should then be glued to the bottom of the piston, followed by sanding for a proper fit. Ensure that the connection rod and crank pin have a slightly loose fit at a 90-degree angle. Insert the second axle into the crank and attach the bushing and locknut onto the cylinder's axle without gluing yet. Assemble the crank to the connection rod and insert the axle through the body into the flywheel. Attach the flywheel and secure the body to the base. Lubricate the engine components with a thin oil like 3-in-One oil, and adjust the crank to place the cylinder at top dead center. Apply air pressure (starting at 5-10 psi) through one of the port holes, and once satisfied with the performance, glue the flywheel and lock nuts in place for a secure fit. Enjoy your redesigned Pimboden engine!