Transmission types

[Tractornewb]

Ok, so I'm totally confused between transmission types available on tractor.

What is the difference between HST, power shuttle, shuttle, manual, and partially synchronized shuttle?

From what I understand, an HST is like an automatic transmission. If you're doing loader work at low speed, back and forth, you just reverse directions and do your thing. Right? I think ...

Manual, if you're doing loader work, you have to switch out from forward, to neutral, and then reverse, and then neutral, and forward, and so on. Killer on the knees, I take it.

What's a Shuttle shift? Like on some JD's?

What's a Power Shuttle? Some Mahindra's come with powershuttles. Is that different than a manual?

What's a partially synchronized shuttle? It says on a Kioti CK2510 description, transmission type: 6x2, partially synchronized, synchronized 1st to reverse...What is that, and how is it different than a Powershuttle, or a manual?

I think I'm getting thoroughly confused. Any help would be appreciated.

 

[Soundguy]

hst.. hydrostatic.. um.. not specifically like an auto tranny that has a tc. the hst has a variable swash plate. you can run high rpm and then vary the pedal for speed. low speed is your best bet for torque.. some people mistakenly press the go pedal and actually run out of power..

 

[arrow]

Ok, so I'm totally confused between transmission types available on tractor.

What is the difference between HST, power shuttle, shuttle, manual, and partially synchronized shuttle?

From what I understand, an HST is like an automatic transmission. If you're doing loader work at low speed, back and forth, you just reverse directions and do your thing. Right? I think ...

Manual, if you're doing loader work, you have to switch out from forward, to neutral, and then reverse, and then neutral, and forward, and so on. Killer on the knees, I take it.

What's a Shuttle shift? Like on some JD's?

What's a Power Shuttle? Some Mahindra's come with powershuttles. Is that different than a manual?

What's a partially synchronized shuttle? It says on a Kioti CK2510 description, transmission type: 6x2, partially synchronized, synchronized 1st to reverse...What is that, and how is it different than a Powershuttle, or a manual?

I think I'm getting thoroughly confused. Any help would be appreciated.

I had a manual tractor that simply went from forward to reverse with no "neutral engagement" needed. What you are describing is a transmission with no synchros at all. I don't think anybody produces that kind of transmission any longer. Without being too technical, synchronization usually means you do not have to come to a stop to shift gears. Shuttle shift is a lever that allows one to simply go from forward to reverse with one clutch push. Power shuttle allows this lever to be engaged without the clutch being pressed.

 

[Tractorrr]

Youtube is a good place to see how to operate the different transmissions. Or go to the dealer and try them out. Not sure about the partially synchronized transmission though.

 

[arrow]

Youtube is a good place to see how to operate the different transmissions. Or go to the dealer and try them out. Not sure about the partially synchronized transmission though.

A "partially synchronized " tranny means only part of the transmission is synchronized for specific gear changes. In this case, a first to reverse collar shift tranny means when you press the clutch once, there will be no grinding and you do not have to "double clutch" and go from 1st to reverse quite effortlessly and instantaneously.. The rest of the gearing you have to stop before changing a gear and thus "partially synchronized"

 

[Poopdeck Pappy]

I'll rank them for ease of use in descending order:

1. HST (hydrostatic) - easiest to use
2. Hydraulic shuttle (sometimes called "power shuttle") - no clutch needed to change from forward to reverse and vice versa
3. Shuttle shift - clutch needed, but don't have to come to complete stop to change
4. Full Manual - push in on clutch, stop, change gears, let out on clutch.

I grew up on full manual gear tractors. They are great if you have a big field to plow and just need to go around and around all day. For any back and forth work, they become tiresome after a while.

I have two HST tractors. I could be very happy with a hydraulic shuttle, and I think I could get use to it quickly.

 

[arrow]

What is that, and how is it different than a Powershuttle, or a manual?


..

Sorry, did not see this part right off. A synchronized 1st to reverse as opposed to Power shuttle is two fold. First a shuttle shift will have a separate lever dedicated for direction changes. These changes can be made in any gear or range as a result. A Power shuttle allows you to make these changes from forward to reverse w/o stepping on the clutch. A "geared" tractor with synchros in first and reverse means that you just shift the lever from first to reverse usually with a clutch engagement. Same lever is used to shift all gears .

 

[Piston]

Instead of trying to explain, I'll second the suggestion of checking out youtube. Type in something like "HST vs powershuttle transmission", or "what is an HST tractor transmission" or a few different variations. Once you find one video, it will make suggestions based on your search, and you'll quickly find different video's explaining the types. Trying to read the descriptions here can be very confusing.

 

[Tractornewb]

Instead of trying to explain, I'll second the suggestion of checking out youtube. Type in something like "HST vs powershuttle transmission", or "what is an HST tractor transmission" or a few different variations. Once you find one video, it will make suggestions based on your search, and you'll quickly find different video's explaining the types. Trying to read the descriptions here can be very confusing.

Yeah I have been watching some Youtube vids, but there were some finer points which I needed explanation on.

Thank you, I think I get ... more now

 

[Deerherd]

A manual shift or non synchronized shuttle requires you to be stopped and clutch depressed to change gears or direction. A synchronized shuttle allows you to change direction while the tractor is still moving with the clutch depressed and a power shuttle allows you to change direction without depressing the clutch.

HST and power shuttle are similar in function, you just use the pedals on the HST or the lever on the power shuttle to change directions. Unfortunately power shuttle doesn't come on many sub 50-60 hp tractors.