Thank god for the invention of the 13 speed road ranger though it was a single stick.
Mack twin stick transmission.
1952 lj mack with cummins engine and a triplex transmission.
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The first tractor trailer i drove back in 78 was an r model mack with a twin stick 6 speed and a 283 horsepower maxidyne engine.
It wasn t all that bad once you got used to it.
The 10 speed was even better.
Models include t2090 t2070 t2050 t2180 t310 t2060 t2080 t2100 x107 and x1071.
Shortly after i got my lisence i used to drive big ole mack tandem axle gasoline dump trucks that had a 20 speed compound shift with twin sticks.
Hell lots of trucks now have completely automated manual transmissions where the clutch action is handled by a computer as is the shifting.
Prepare to be mesmerized watching a man use both hands to shift two sticks through nine gears while double clutching in an old mack truck.
There s no such thing as a twin stick truck operated like this from the factory anymore and the range changes that the driver makes are mostly done now with the flick of a little switch on the shift handle.
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