Massey Dyna VT v Dyna 6.

[Sandy]

Yeah Jd just did what you wanted without trying.

Never driven a command pro

You’re not missing much!

 

[Fendtbro]

Never driven any of these vario tractors apart from a quick circle round the dealers yard, so can't really comment good or bad. What I can say is that when JD brought out their very first auto box tractors they did the rounds showing it off against the exact same tractor with a power quad box. Basically chained the two together at the drawbar and drove off in opposite directions. The autobox got more grip on the ground and pulled the power Quad backwards.

Don't get that. Traction is tyres x weight??

 

[DrDunc]

Don't get that. Traction is tyres x weight??

When has the Deere mothership marketing department ever bothered letting reality get in the way of extracting money from farmers?

 

[daveydiesel1]

Don't get that. Traction is tyres x weight??

While it may be that it has a lot to do with the power going through the tyre

 

[Farmer_Joe]

I suspect it’s more of a case that the vario via wheel slip will drop revs just as it’s detecting excessive slip meaning the machine goes much further before getting stuck basically ‘feathering on the edge of grip’ which would be extremely hard in power shuttle,

So power and grip is same but the box preserves the traction better

 

[bravheart]

I suspect it’s more of a case that the vario via wheel slip will drop revs just as it’s detecting excessive slip meaning the machine goes much further before getting stuck basically ‘feathering on the edge of grip’ which would be extremely hard in power shuttle,

So power and grip is same but the box preserves the traction better

That's exactly how the tried to sell them just a pity they forgot build quality and reliability!!!

 

[Farmer_Joe]

It’s ok im a pauper livestock farmer so a vario is just a dream for me anyway

 

[Cowabunga]

Do the Massey VT tractors come with radar speed/slip sensor?

Yes, of course they do. I’ve even got slip control on my 1993 Same Titan and 1997 NH 8360, not that its ever worked properly on the New Holland.

 

[Cowabunga]

That statement makes no sense to me..

It doesn’t to me either. But neither does the claim that Dyna-VT and by implication all Fendt, are dead in the field due to power loss. They certainly lose power on roading but the performance at field speeds in low range seems to be as good as any powershift. Traction though, has nothing to do with transmission type.

 

[bravheart]

Traction though, has nothing to do with transmission type.

As I stated earlier that's how JD were marketing the autobox claiming the computer brain controlled the forward speed and engine revs to get the maximum torque, traction and forward speed from the tractor with the correct amount of wheel slip and proved it by pulling its mate backwards.

However you might want to claim its the computer brain and not the gearbox that's the winner and that there's too many settings to override the computer on today's tractors.

 

[DrDunc]

As I stated earlier that's how JD were marketing the autobox claiming the computer brain controlled the forward speed and engine revs to get the maximum torque, traction and forward speed from the tractor with the correct amount of wheel slip and proved it by pulling its mate backwards.

However you might want to claim its the computer brain and not the gearbox that's the winner and that there's too many settings to override the computer on today's tractors.

It could also be typical Deere marketing bullshyte and 5psi less in the Vario tractor tyres

I was particularly impressed with Deere's "green efficiency" slogan they used to market one of the thirstiest engines that you could buy, which also needed a gasket and the head skimmed before they reached 5000 hours

 

[bravheart]

It could also be typical Deere marketing bullshyte and 5psi less in the Vario tractor tyres

I was particularly impressed with Deere's "green efficiency" slogan they used to market one of the thirstiest engines that you could buy, which also needed a gasket and the head skimmed before they reached 5000 hours

Very probably yes and possibly with the same self destruct auto gearbox.

 

[James]

I've gone from a dyna 6 7618 to a 7719S vt.
Ok so the 19 has more power but it goes uphill faster than the dyna 6 tractor did with the same implements.
Can't get into using pedal mode at all it brings the tractor to a halt too sharply. Use stick all the time and if you pull back till stationary and it'll sit there all day.
Overall I prefer its ease of use either on the road or in the field over the dyna 6.

 

[Fendtbro]

It doesn’t to me either. But neither does the claim that Dyna-VT and by implication all Fendt, are dead in the field due to power loss. They certainly lose power on roading but the performance at field speeds in low range seems to be as good as any powershift. Traction though, has nothing to do with transmission type.

At say 6-7k forward speed the vario is almost completely hydrostatic. Anyone who has driven a hydrostatic forklift will know how power hungry they are. I think most vario tractors sold are on the bigger side and the hp masks the losses. Load them right up and it starts to show. Great for pto work tho..

 

[Fendtbro]

Sounds like you need a few pointers in how to drive a vario

I am all ears if you can make the fastrac go any better..??

 

[Spud]

I've gone from a dyna 6 7618 to a 7719S vt.
Ok so the 19 has more power but it goes uphill faster than the dyna 6 tractor did with the same implements.
Can't get into using pedal mode at all it brings the tractor to a halt too sharply. Use stick all the time and if you pull back till stationary and it'll sit there all day.
Overall I prefer its ease of use either on the road or in the field over the dyna 6.

Go into the left hand screen and adjust the deceleration rate

 

[James]

Go into the left hand screen and adjust the deceleration rate

I'll try that thanks

 

[Cowabunga]

As I stated earlier that's how JD were marketing the autobox claiming the computer brain controlled the forward speed and engine revs to get the maximum torque, traction and forward speed from the tractor with the correct amount of wheel slip and proved it by pulling its mate backwards.

However you might want to claim its the computer brain and not the gearbox that's the winner and that there's too many settings to override the computer on today's tractors.

It was just bullshite marketing. They’ve a long history of it and it obviously works.

 

[Cowabunga]

At say 6-7k forward speed the vario is almost completely hydrostatic. Anyone who has driven a hydrostatic forklift will know how power hungry they are. I think most vario tractors sold are on the bigger side and the hp masks the losses. Load them right up and it starts to show. Great for pto work tho..

In high range it probably is, depending on the tuning which is different for various spec tractors and geographical areas.
My 7490 doesn’t mask anything. It saps around 20to 30hp more than an efficient semi-powershift while roading at full load. I have three tractors from 145 to 177 at the shaft with the MF at the top and the NH 8360 Range Command at 145hp. Their performance on a steep road with 15 tons behind is identical. My Same Titan has 160hp at the shaft and is also an identical performer once it has warmed up, showing that its efficiency sits between the others. This isn’t in top gear, because the hills I travel have to tractors slowing down to 13kph maximum at some long stretches, so the gearing on all tractors, no matter the transmission, has ratios set to suit the maximum load on the engine.

However, in the field in low ratio and full load the MF Vario outperforms the others by a significant margin. This is partly due to the management system allowing the unit to pull at full load at all times, or to operate at maximum efficiency.

 

[bravheart]

It was just bullshite marketing. They’ve a long history of it and it obviously works.

Only relaying what I saw, I was sat in the winner, come to think of it might have been all that extra ballast.
Didn't work for me though, cheque book remained firmly shut.