Can someone explain Speed Shuttle etc?

[GWB]

OK, for someone who's out of touch with operating modern machinery (we had CASE 784 and MF 590 in my day), what the hell is Speed Shuttle and equivalents? I'm used to four speeds and a transfer box!

Please keep it simple... ;D

[Woodbeef]

Hey GWB,

I'll take a stab at it. now I do not know if you have a particular brand in mind or not,but..........basically I do believe that in todays tractors a Speed Shuttle would be the same idea as calling it a power shuttle, hydraulic shuttle,clutchless shuttle,etc.....In that when operating it you do not have to come to a stop to change directions,or clutch either,hence quicker cycle times.

[eppie]

I was thinking the MF 6200 or 4200 series have a speed shuttle. I think it was the three step (4200) or the four step dynashift (6200) tranny combined with the electro-hydraulic shuttle, like on a forklift truck.

[GWB]

Thanks Woodbeef & Renze. So once, say, you're in first gear, before you change up to second you have an almost infinite range of speeds, almost like a sliding scale?

GWB

[Friedhelm]

Are you talking about vario / CVX? Stepless trannys?
If so I think Speed Shuttle is the degree of acceleration you can choose from.
I am not sure but I think it was:
1. degree: the whole range from 0 - 10 km/h 2.degree: 0-20 3. degree: 0-40 4. degree: 0-50

Renze: MF uses Powershuttle (Changing forward backward without clutch) or Speedmatching (Dynashift steps will be switched, if you change manually gear, to the step with the right speed to slow down or accelerate) or Autodrive (Dynashift works complettely automatic. You can choose from Power- or Economy programm or switch it off)

[HPP]

Hey GWB,
I think you should go for the answer you got from Woodbeef, that is - quick changing from forward to reverse (or opposite) without using the clutchpedal.
This is normal standard on most brands today.
As I understood your posting where you thanked Woodbeef and Renze you might have misinterpreted their explanations.
I think you should picture something that´s trying to describe the movement back and forth. This from the word "Shuttle". As far as I know a shuttle from the beginning is a thing that´s used when you´re weaving cloth. The shuttle then would be the thing that carries the thread back an forth thus producing woven textiles.

[Friedhelm]

HPP:

You are right about shuttle. This describes forward backwards changing. But Speed Shuttle maybe is something different. See my message above. I do not know right english word for it.

[GWB]

Thanks chaps. But if Speed Shuttle etc is basically changing gear without using the clutch, what's the difference between that and CVT? Surely Speed Shuttle/Power Shuttle etc is the same as CVT...?

GWB

[eppie]

Speed shuttle is automatically changing gears, shifting the four powershift steps.
it shifts automatically between its powershift steps, like an automatic trans in a car.

A CVT as an infinite number of gears, speed can be changed without shifting one step up or down, or changing the engine revs.
Just like the belt variator in scooters.

[HPP]

Can´t help it, I know I´m stubborn, but until someone prooves me wrong I still connect the word "shuttle" with the changing of direction, back and forth.
With this I mean to say that I don´t think it has anything to do with changing gears, from 1st to second to third etc. but only changing from forward to reverse and, of course, the opposite.
I guess that this "Speed Shuttle" also is some kind of trade mark for some tractor brand.
For example we have the "Power shuttle" on the MF:s and I guess that the "Speed shuttle is about the same thing only that the manufacturer of this other brand thinks he has to call it something else.

GWB, maybe it would help us to explain it if you found out what manufacturer is using the name, because I think it´s only a brandname.
One thing, however, is, at least to me, absolutely certain and that is that is has nothing to do with CVT-trannies.

And Friedhelm, fellow MF-man as I gather, yet not a fellow Fendt-man, as I gather (?),
what you´re talking about I believe would be the button on the joystick (talking Fendt here) where you can set the grade of acceleration (and retardation), in german: "Scharf oder feinfühlig beschleunigung", in 4 different steps. Am I right?

[HPP]

Hey again Friedhelm!
Just read your postings above again and it dawned on me that you´re not only talking about setting the grade of acceleration. You´re also talking about the new "TMS" on the new 800 Varios and on the 930 Vario. With the new TMS you can choose, in 4 steps, when driving only with the foot pedal, what speedrange the pedal should cover. The minimum being 0 - 10 km/h and the 4:th step giving you 0 - 50 km/h.
This however is new to most of us and as of yet I myself unfortunately have no practical experience at all.

And please GWB, don´t consider this last posting at all. Otherwise I´m afraid that you will have an even harder time understanding what this "Speed shuttle" really is!
You see, this last posting had nothing at all to do with your topic/your question! Please forgive me!

[Friedhelm]

Hey HPP

Only MF man.
Yes, you are right!
I just thought it might be the english product name for the 4 settings of acceleration grade on vario. I just remember the old 900er had this on the joystick. And CVX has got something similar.
I read about TMS but I did not know about that what you´ve explained. I thought the "old" ones already had such a thing.
How is business?

[orange]

I agree with Woodbeef and HPP, "shuttle" is something that goes
there and back for example a shuttle bus at an airport

so to me "shuttle" is connected to forward and back and in my mind speed shuttle is the small lever on the steering column that changes the direction of the tractor without using the clutch, this giving you a fast change of direction "speed shuttle"

[HPP]

Hey Friedhelm,
thanks for asking!
Let´s put it this way. We do have capacity for more!
have been quit busy these last weeks demoing the 926 (beautiful thing!) with different types of equipment and the 716 mostly with a Dalbo Dinco (beautiful things, both of them!). Hopefully we´ll get to some results later this fall.
And, finally we´ve got rain!! This means we´re not that afraid anymore that either plow or Dinco will get down in the ground when we gwt out there demoing.
How are bussiness at your place? And, where in Germany are you at?

[Friedhelm]

Hey HPP

Spring and first half of summer it worked good. Then we got 1 1/2 month with almost no questions for buying new tractors. Our mechanics have work enough (a competator is stopping.). Last few weeks used machinery is going better. But I am afraid business will go down this winter due to the economic problems here in Germany.
Next week I will start demoing with our MF 8240 MFWD xtra. Some contractors are looking for such a tractor. We will see ..
We are located in the northwestern part next to the dutch border (Between Münster and Osnabrück) place is called Itterbeck.
You are from sweden?