Years ago, the choice was clear: When it came to 2 stroke vs 4 stroke outboard motors, 2 stroke won every time. Two stroke motors offered a better power-to-weight ratio, were cheaper to manufacture, ...

As explained in Part 1 of this series (SW May 2021), stroke rate and stroke length typically vary inversely. When a swimmer increases stroke rate, he/she usually decreases stroke length. When a ...

As shown in a previous “Swimming Technique Concepts” article (SW June 2021), when swimming velocity increases, the time of all four stroke cycle phases decreases. Conversely, swimmers decrease the ...

If you’re shopping for a new fishing boat or an outboard motor to power it, one of the decisions you’ll have to make is between a 2 stroke vs 4 stroke engine. Unless you’re going electric, this choice ...

Porsche has patented a revolutionary new engine with a six-stroke combustion cycle. Essentially, the engine is combining both ...