timing gear

noun

1. (in an internal-combustion engine) the drive between the crankshaft and the camshaft, usually giving a ratio of 2 : 1

Example Sentences

This gun is mounted on the hood and by means of a timing gear shoots through the propeller.

From Project Gutenberg

Zircon expressed amazement at the top of his voice that no timing gear was available.

From Project Gutenberg