The History of Synchronized Transmissions

[JasonG]

/SNIP Plus Eaton wants you to wear out those clutch's so they can sell more.

I love this answer.
Oh, and to the OP, float the gears.

 

[Goodysnap]

Steve: Volvo FE7's were at least class 7 and had fully synchronized transmissions. On others when the pedal is pushed to the floor with the truck moving the clutch brake is trying to stop the truck and can break the center out of it. Then if one continues to milk it the input shaft will be ruined by the brake spinning on the shaft.

I have seen this also and it is usually on hydraulic assist clutch applications. Pretty hard to do with old school linkage and or cables though.

 

[RonG]

On the Mack quadruplexes,triplexes etc you can adjust the clutch brake to engage before the clutch disengages and it is pretty obvious when you are driving it.Ron G