If you have ever driven an antique vehicle with a non-synchromesh transmission, with straight cut gears... you have no doubt been educated in the fine art of "double-clutching" and feathering the gas pedal to match the engine RPMs to the transmission RPMs, so the manual shift goes a little smoother. If you fail to do all of the above in a coordinated effort, your passengers will ask you if you think the transmission gears are made of rubber or some other snide remark. The gears will grind, you will get frustrated, rev the engine, making the attempted shift worse than before. That will make you appreciate a synchromesh transmission much more.
In this film dated 1936 is the introduction of how a synchromesh transmission works. This is yet another Jam Handy movie produced for Chevrolet (all synchromesh transmissions work basically the same). This movie like the rest in the series is very good at explaining how complicated things work. Grab some popcorn and enjoy the show...
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