Re: synchro vs powershift

Posted by kyhayman on September 13, 2004 at 11:11:43 from (205.204.242.23):

In Reply to: synchro vs powershift posted by Doug Rogers on September 13, 2004 at 10:29:51:

At great risk here as I am not familiar with the internal specifics of JD's sychro shift generally speaking:

power shift: uses single or multiple plantary gears sets and a with wet clutches that work of the shift lever. Shifts like a car with an automatic where you shift 1-3 with the lever and lacks a torque converter. Uses an inching pedal as opposed to a clutch to allow for hooking and unhooking equipment.

synchonized transmissions: like a modern manual transmission in a vehicle. Allows shifting while moving with using the clutch pedal between the synchronized gears, need to be at a stop to shift between the unsynchized gears.

Given the same engine a powershift typcally consumes more power in the transmission for the extra volume of flowing oil and corrsponding waste heat than synchonized or unsynchronized transmissions. My personal bias is in favor of a fully synchronized transmission over either power shift or unsychronized. Once again, only general statements, only direct experience with a 4020 is on the engine.

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