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Wax motor
The gist
A Wikipedia "Wax motor" link hit 221 points on Hacker News with 42 comments.
The thread's real draw is a dispute over whether the page's photo is mislabeled.
How it unfolded
- Sep 14, 2026A YouTube short states that a traditional mechanical car thermostat uses an expanding wax charge to move a piston and open a coolant valve against a spring.
- Sep 16, 2026An appliance repair page notes that newer KitchenAid dishwashers flash error codes including 10-2, for the vent wax motor.
- Sep 17, 2026A Hacker News submission linking the Wikipedia "Wax motor" article received 221 points from user mhb and drew 42 comments.