Shuttle versus HST

[ovrszd]

And I can't agree with you on the lack of HST precision. Precision operation is one of the main reasons I need HST. I've owned shuttle before, wasn't a fan. Although, I use mine for work so I suppose I do much more precision work than you get into.

Not sure about who gets into more precision work. I almost always have my Grapple on and that requires fine precision. The difference is most of your work is on relatively flat ground. There HST shines. Terrain flat enough that when you lift your foot off the HST pedal the tractor actually stops in place. No HST will hold a tractor in an exact position on steep terrain without cheating and leaning on the reverse direction pedal or using the brakes. Get on an incline so steep you can't negotiate it in 2wd, then Shuttle shines for me. And as I mentioned earlier, the vast majority of the time my engine is at idle.

These different needs and preferences are why they make both kinds.

 

[boggen]

RPM control
break control
direction control
MPH (miles per hour) how fast control

and of course on a steep hill, and 6" = difference between rolling down hill and flipping tractor a few times over. or getting things done, and making things look good.

when i say control it needs be not set and forget option or, and automated adjusted option, but foot/hand control that i can physically adjust all 4 at the same time.

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does above sound more like what ya folks talking about and having issue with some control layouts?

 

[ovrszd]

Grand L60's now have left foot brakes unlike my L40, so that's no longer an issue.

My Brother's L3240 had the brake pedals located more toward the center. There was just enough floorboard room to get your left leg jacked around so you "could" operate the brakes and the HST pedals at the same time.

 

[boggen]

HST = hydro static transmissions...

they have huge torque little speed = high RPM's = choose a gear, push peddle down a little bit.
they have low torque, high speed = high RPM's = choose a gear, push peddle all the way down.

if you use too high of a gear in a HST and pedal to the metal, and loose ground speed, internal by pass valves are opening up. letting fluid by pass things. causing extra heat, "truly wish they put a heat sensor on the oil in hyd transmissions" along with a sensor / dummy light, letting you know by pass valve opening up. so folks could better adjust things. and actually work towards true power output of an HST. vs just guessing.

HST = a lot of extra internal leakage. if ya run them in to high of gear vs torque ya applying on them. ya basically forcing oil to be pushed through small little gaps, = lots of friction and extra heat build up.

if ya loosing ground speed, you more likely able to get a higher ground speed. if ya drop to a lower gear and push pedal all the way down. vs trying to run in a higher gear and only partially pushing down the pedal. due to by pass valves opening up / internal leakage of HST.

 

[TripleR]

My Brother's L3240 had the brake pedals located more toward the center. There was just enough floorboard room to get your left leg jacked around so you "could" operate the brakes and the HST pedals at the same time.

That's the way my L5740 is and it's a lot better than on our previous L5030. I rarely if ever use the brakes on it, but my son does. If I do, I just use the cruise control and brakes, I often use the cruise control rather than foot pedal anyway especially on rough terrain.

 

[ovrszd]

That's the way my L5740 is and it's a lot better than on our previous L5030. I rarely if ever use the brakes on it, but my son does. If I do, I just use the cruise control and brakes, I often use the cruise control rather than foot pedal anyway especially on rough terrain.

Yep, I was thinking of you in this discussion Larry, knowing you regularly operate both kinds. I only ran my Brother's L3240 intermittently. I was always reaching for the shuttle lever to change directions.

 

[TSO]

Not sure about who gets into more precision work. I almost always have my Grapple on and that requires fine precision. The difference is most of your work is on relatively flat ground. There HST shines. Terrain flat enough that when you lift your foot off the HST pedal the tractor actually stops in place. No HST will hold a tractor in an exact position on steep terrain without cheating and leaning on the reverse direction pedal or using the brakes. Get on an incline so steep you can't negotiate it in 2wd, then Shuttle shines for me. And as I mentioned earlier, the vast majority of the time my engine is at idle.

These different needs and preferences are why they make both kinds.

That's weird, I found the opposite... I think HST is MUCH more controllable on sloped. One foot on the go pedal, one covering the brakes if/when needed.

With shuttle, you're constantly monitoring the clutch, brakes, and the go pedal. Doing the math, carry the 1, that's one extra pedal for a two legged person!

 

[ovrszd]

That's weird, I found the opposite... I think HST is MUCH more controllable on sloped. One foot on the go pedal, one covering the brakes if/when needed.

With shuttle, you're constantly monitoring the clutch, brakes, and the go pedal. Doing the math, carry the 1, that's one extra pedal for a two legged person!

As I've said in this thread several times, if you can run the brakes and the HST pedal at the same time, no problem. If you can't, problem.

Not even going to touch some of the statements HST operators make about "never" using the brakes. Again, on relatively level terrain, no problem. On steep terrain, problem.

Many times I've had my HST tractors in situations where returning the HST pedals to neutral would not stop the machine from moving.

Not sure what the "go pedal" is, my tractor doesn't have one of those.

So, you are running two pedals, HST and brakes. I am running two pedals, clutch and brakes. :confused3:

 

[Fallon]

The go pedal is what many people call the pedal on a hst that makes you go. Can't call it a throttle or gas pedal...

My hst will hold reasonably well in medium on moderate slopes. In low on steep slopes I slip an inch or 2 a minute.

I can ride side saddle on my L3200 to run my turning brakes if needed. Its annoying & uncomfortable but easily doable.

 

[coobie1]

I am in the market for a new tractor. Currently have around 32 acres of fields to brush hog, want to plant some food plots, and I am putting in a ~1100 ft gravel driveway. After reading a lot of post I figured I needed to be in the 35-45hp range for a tractor and want one that comes with a FEL. With prices and considering the dealers, I have narrowed it down to the Kioti DK40 or DK45. They have 2 in stock, the DK40 is a shuttle shift and the DK45 is the HST, both have FELs that come with them.

Given mostly will be using this for what I posted in the first sentence, what are the advantages/disadvantages to each of these? Besides the obvious that the shuttle is more manual.

BTW...pricing given to me today was $22K for the DK40 and $25K for the DK45.

Thanks!

I have owned both (shuttle & HST) in my 2 kioti tractors.Hands down the HST is the winner.