Reciprocating Engines. Where would we be without them? Here is a set
of (shareware) educational HyperCard Stacks that demonstrate just how
Gasoline, Diesel and Steam engines work, with descriptions, discussion
and animation.

> The intent of these stacks is to illustrate the similarities,
> differences, advantages and disadvantages of these three different
> types of engines. Discussion stacks are included to provide more
> detail, explanation and comment where appropriate. A glossary to
> terms and references are included.
>
> Animation of these stacks is accomplished by clicking and holding
> down the mouse on the "run" button on each animated stack. This
> causes hypercard to repeatedly flip through the stack, each of which
> contain up to 48 cards. The engine can also be run forward or
> backwards with the arrow keys.

Archived as ".sit" using StuffIt v3.6 for pretty good backwards
compatibility.
MD5 checksum & filename: 3c47463f05e156764530660e79a82f7d
*reciprocating-engines.sit

Compatibility
Architecture: 68k

Requires HyperCard 1.x for playback.
Minimum hardware requirement is a Mac Plus.
A hard drive is strongly recommended.
Animation is faster on a Mac II or SE/30.