We used two dynos to measure the car's peak horsepower after tuning.

He executed a perfect dyno to grab the distant crimp and sent the problem.

I always keep a dyno torch in my glove compartment for emergencies, since squeezing its handle produces light without batteries.

Before the demonstration, the engineers checked that all the dyno torches were working properly.

The vintage truck's dynostarter failed during the parade, leaving the driver to push-start the engine.

The maintenance crew replaced the worn dynostarters before the next test flight.