Message text written by "Nelson Riedel"
>The unidirectional clutch normally transfers all the torque for all
forward
gears including jump starts in 1st. The sliding member clutch transfers
torque
when in OD --2nd 3rd & 4th, somewhat less torque then the 1st gear starts
so my
guess is if it is forced, the sliding clutch will slip. Backing up with OD
engaged probably fells like the park brake is on real hard.
<
Nelson, look again. The cone clutch has two faces on it. One face is for
overdrive and the other face is for direct. The Sprag clutch (one-way)
comes into play only during the transition between the two modes.
But you are right about the sprag clutch being robust enough to take quite
a bit of abuse. I've seen one stall an idling Austin Healey engine (yes,
we had it in backwards. We had reverse overdrive, just fine.) but one
would have to think that somewhere there is a hill steep enough to apply
enough reverse force to damage the clutch, doncha think?
Dave Massey
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