MM20 - The ASAP engine
| Technical details |
| Year of construction |
2001 |
| Power piston |
stroke |
24 mm |
| |
diameter |
40 mm |
| Displacer piston |
stroke |
24 mm |
| |
diameter |
64 mm |
| Flywheel |
diameter |
120 mm |
| |
material |
plywood |
| Idle speed |
30 rpm |
| Energy source |
alcohol |
| Mass |
g |
Description:
ASAP - "as simple as possible" is easy to appreciate when looking
at the finished model engine. Thereby, the idea of Daniel Lyonnett's
proved to be a good pattern for the 2001 project week at our school. But
unfortunately, building this ASAP model turned out to be easy at all. The holder
is easily and quickly made of plywood as shown on the delineation. More
problematic are the pushrods for both pistons. As it is the case with all the
other stirling engines, extent of their sealing and a minimum of friction are
the deciding factors for success or failure. Concerning our model, success meant,
as often, the result of a number of overcome flops. Meanwhile, the engine runs,
after a fashion.
The next engine will surely be built without using plywood parts: ASAP - as soon as possible ;-)
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