M35 - Rupp hot air engine
Technical details | ||
Year of acquisition | 2007 | |
Power piston | stroke | 9,3 mm |
diameter | 17,8 mm | |
Flywheel | diameter | 32 mm |
material | aluminum | |
Idle speed | unmeasured | |
Energy source | alcohol | |
Mass | 225 g |
Description:
Some motors are difficult to build with just the technology available to a
hobbyist. I therefore decided to acquire a completely assembled model of the
Rupp engine (an open cycle hot air engine) from Hermann
Schmidt.
The initial reply was: "It's no longer in stock". After a while I
received an e-mail notifying me that the Rupp engine was once again available. I
was thrilled!
The engine keeps running happily. I just love that deep plopping sound of the warm air being periodically released...