Buying Advice HST or Gears?

[ovrszd]

All completely different animals that you're combining to make a gross generalization.

Comparing a 22hp SCUT to a 47hp Utility machine, much less a 95hp machine isn't going to make for a useful comparison. So a much larger machine spends the bulk of its time at a lower RPM....not exactly a shocking conclusion.

I've had a 47hp CUT with HST and a 48hp Utility tractor with straight gears. The HST machine spent the bulk of it's time below 2000rpm....usually more like 1700rpm. There was no need to run it any faster than that for normal tasks. The gear machine varies widely since I normally use the foot throttle, rather than set it with the lever, but the only time it goes over 2000rpm is when I'm on the road.

There's a reason the newer, nicer HST machines have the throttle linked to the HST pedals...because they simply don't need to have the engine turned nearly as fast as most people set them (they're simply wasting fuel most of the time). If HST machines really needed to have the engine turned as fast as you're claiming, they wouldn't be offering this kind of system.

Did you get up on the wrong side of the bed this morning???

Your comparisons of your two 40 something hp tractors supports what I said.

Your reference to the nicer HSTs linking the HST pedal and throttle also confirms what I stated. If factory set they'll have the engine at PTO rpm or above by the time the HST is at half speed. Talk about a waste of fuel.

In your own comparison above you stated your gear tractor never goes over 2000 rpms unless it's on the road. I think you copied that out of my post???

So we both are suffering from "Gross Generalizations" and "Shocking Conclusions".

 

[chuck172]

If linking the hst pedal and the throttle work so well, why hasn't anyone come out with a nice, resonably price , kit to modify an existing hst into the linked system? It doesn't seem very difficult to make.

 

[ovrszd]

If linking the hst pedal and the throttle work so well, why hasn't anyone come out with a nice, resonably price , kit to modify an existing hst into the linked system? It doesn't seem very difficult to make.

As mentioned before, there are a lot of different users on here. My Brother had a L3240 with HST+. I always turned that feature off when I ran it. As Gmanbart said, it was a tremendous waste of engine rpms to me.

The basic idea is very simple. I never investigated his 3240 close enough to see how it worked. My RTV basically has the same feature. The gas pedal is cable operated. The cable splits to create two working ends. One fastens to the injector pump lever. One fastens to the HST lever. Cable adjustments allow the operator to vary the consequences.

 

[dieselcrawler]

If linking the hst pedal and the throttle work so well, why hasn't anyone come out with a nice, resonably price , kit to modify an existing hst into the linked system? It doesn't seem very difficult to make.

My friend with an L4310 hst has talked about figuring out a way to do this to his... so far nothing but talk, as we have not had time to look at it, and figure it out.

 

[ovrszd]

My friend with an L4310 hst has talked about figuring out a way to do this to his... so far nothing but talk, as we have not had time to look at it, and figure it out.

Greg, being the handyman you are I know you could figure it out. Might work better using a linkage setup rather than a cable setup. But I'm sure you could do it.

I know you'll get right on it since you don't have any other projects going on.......

 

[chuck172]

Are there any electronics involved in the hst link, or is it all mechanical?

 

[Foxl3830]

Hello first I'm just a little food plotter/take care of like 20ac plus another 50 hunting property so first like 15 yrs ago got a 8n gear drive great but was limited in size but tilled a lot of food plots and planted a lot of corn. Now some 15 yrs later I moved up to a Kubota L3830 hydro all I can say is the hydro is nice for exact hook up and fine work and yes it's user friendly my 11yr daughter can run it and move it for me with no problem that by itself is awsome I would never let her on my 8n just because of the clutch. I've never ran shuttle shift I can't say anything bad they seem to have there place l like the the idea of being able to throttle up well running in a gear or when needed. I think it comes down to personal preference! I do like my hydro mine also has cruise if your mowing or traveling a long ways you can set it and ride very safe also God forbid you slip or fall tractor will stop if your foot falls off the pedal just my thoughts like I said I do not make a living off my machine so my thoughts maybe small!

 

[k0ua]

Are there any electronics involved in the hst link, or is it all mechanical?

Both. I believe the earlier models were mechanical, but from what I can tell, some of the later controls are "fly by wire" so electronic in nature. Even the HST pedals themselves are just moving Potentiometers not swash plates directly.

 

[4570Man]

All completely different animals that you're combining to make a gross generalization. Comparing a 22hp SCUT to a 47hp Utility machine, much less a 95hp machine isn't going to make for a useful comparison. So a much larger machine spends the bulk of its time at a lower RPM....not exactly a shocking conclusion. I've had a 47hp CUT with HST and a 48hp Utility tractor with straight gears. The HST machine spent the bulk of it's time below 2000rpm....usually more like 1700rpm. There was no need to run it any faster than that for normal tasks. The gear machine varies widely since I normally use the foot throttle, rather than set it with the lever, but the only time it goes over 2000rpm is when I'm on the road. There's a reason the newer, nicer HST machines have the throttle linked to the HST pedals...because they simply don't need to have the engine turned nearly as fast as most people set them (they're simply wasting fuel most of the time). If HST machines really needed to have the engine turned as fast as you're claiming, they wouldn't be offering this kind of system.

My HST has the throttle and HST pedal linked. Kubota refers to it as auto throttle. I don't like it. It throttles it to over 2000 rpm to move, and pushing 3000 to get any kind of speed. Lucky you can easily turn it off because it is too fast for my taste. I have used smaller gear tractors. They didn't reach the PTO rated rpm until 2500 RPMs. The gear tractor didn't have enough power running around 1200 RPMs to get above 3rd gear. The gear tractor could easily spin all 4 wheels in first or second gear while idling, but it's painfully slow. I usually operate around 2000-2200 RPMs rather a gear or HST. On my B7100 i primarily use it for mowing and run it about 2700. I'm turning a 60" deck with 17 hp. It needs all of the available power it can get.

 

[k0ua]

My HST has the throttle and HST pedal linked. Kubota refers to it as auto throttle. I don't like it. It throttles it to over 2000 rpm to move, and pushing 3000 to get any kind of speed. Lucky you can easily turn it off because it is too fast for my taste.

But isn't it mechanically adjustable?