As the semester comes to an end, construction on the Stirling Motor is taking longer than expected and has been more difficult than anticipated, especially factoring the additional complications due to COVID-19. With that being said I have continued to try and create this project to the best of my ability utilizing the materials and tools available to me within a reasonable price range.
For the motor housing I needed a metal cylinder (needs to be able to conduct heat from open flame). I was planning on machining an aluminium housing, however due to the machine shop closure I am resorting to an aluminum can of some sort. The problem using the monster can pictured below is that the walls are very thin and quite flimsy. Its inability to take a radial load and permanently deform has caused issues. I have thought about using a soup can or such. In either case I plan to wrap the can in construction paper or some other material in order to add an aesthetic theme to the main component of this project.
The cardboard cylinder is supposed to act as the displacement cylinder, however using stacked layers of cardboard has made the displacement cylinder too heaver. I will need to go to the store this weekend and purchase steel wool or some other, less dense material to use as the displacement cylinder.
One of the most difficult parts to the motor was creating the crank shaft and getting the lengths of each part the correct length and bending the pieces the right amount. The main concern is keeping the turning portion co-linear. The vice made a great use for holding the wire in place and bending. As seen in the photo below the middle connection is attached to the displacement cylinder and the Popsicle sticks are attacked to the power-piston.
As for the aesthetics of this Stirling Motor I was hoping to get any input from viewers on viable options. I am planning on using this thin wire to wrap the main cylinder and connecting linkages in order to add aesthetic themes to this somewhat recycling bin looking clump of materials.