Manual gearbox vs powershift
- Thread starter f140
- Start date
cormywormy
Well-Known Member
Like a ford 8630 :)
Username
Well-Known Member
Manual transmission would traditionally use a cheaper dry clutch set up. Often heavier to operate, will wear out faster, may overheat at heavy work. Cheaper to work on but will likely need work more often.
May or may not have a shuttle unit.
Will require clutching to change direction or pull away.
A powershuttle transmission uses an electronically controlled hydraulic clutch pack (or pair of clutches) to take up drive. More expensive, but ought last longer. Usually a lighter pedal, easy to use, less likely to overheat. Can change direction at flick of a lever/switch without pushing the pedal (but not abuse proof).
Both types of clutch may be combined with powershift/dual power/delta shift/dyna4 type gears which will give clutchless gearshifts.
Option C is a torque convertor type powershuttle as found on a teleporter, but that's a different thing again. Uses an oil filled unit that won't transmit power until spinning above a certain speed, combined with clutch packs to select direction.
Option D is a CVT/Vario, which uses a hydraulic motor and pump pair to transmit power. €€€ but very flexible.
May or may not have a shuttle unit.
Will require clutching to change direction or pull away.
A powershuttle transmission uses an electronically controlled hydraulic clutch pack (or pair of clutches) to take up drive. More expensive, but ought last longer. Usually a lighter pedal, easy to use, less likely to overheat. Can change direction at flick of a lever/switch without pushing the pedal (but not abuse proof).
Both types of clutch may be combined with powershift/dual power/delta shift/dyna4 type gears which will give clutchless gearshifts.
Option C is a torque convertor type powershuttle as found on a teleporter, but that's a different thing again. Uses an oil filled unit that won't transmit power until spinning above a certain speed, combined with clutch packs to select direction.
Option D is a CVT/Vario, which uses a hydraulic motor and pump pair to transmit power. €€€ but very flexible.
diesel power
Well-Known Member
Power shift boxes use clutch packs and solenoids to change gear. They will wear over time but how long they last comes down to how well a tractor is driven and serviced. Calibrating them is important as well.
Username
Well-Known Member
Did you change the title from powershuttle to powershift? @f140
Powershift transmissions are nicer to use for many jobs, but will absorb more power than a manual. More expensive to fix and may need calibration. Will have multiple clutch packs, solenoid control valves, may have electronic control units.
Manual gearboxes are cheaper to operate and maintain but aren't as nice for certain jobs, road work being one. If you are a handy driver you'll have no bother but it's nice to be able to drop a shift midway up a hill. A worn out manual may have crunchy synchonisers and will drive on for years but will be unpleasant at times.
What tractor? All manufacturers have their own plus points and weaknesses.
Powershift transmissions are nicer to use for many jobs, but will absorb more power than a manual. More expensive to fix and may need calibration. Will have multiple clutch packs, solenoid control valves, may have electronic control units.
Manual gearboxes are cheaper to operate and maintain but aren't as nice for certain jobs, road work being one. If you are a handy driver you'll have no bother but it's nice to be able to drop a shift midway up a hill. A worn out manual may have crunchy synchonisers and will drive on for years but will be unpleasant at times.
What tractor? All manufacturers have their own plus points and weaknesses.
jcb411abuser
Well-Known Member
Powershift boxes contrary to popular belief are fit for more work that manual boxes. They aren't much more expensive to repair unless you have an odd ball one either.
Generally they do more between overhauls than manuals if they are operated correctly and oil levels and quality are maintained.
Generally they do more between overhauls than manuals if they are operated correctly and oil levels and quality are maintained.