- Location
- Pinnaroo. South Australia
Yeah I’m not sure I’d have the patience Steve has. Got to see yogi kendals truck at a local roadhouse couple months back.
Looks pretty cool in person
Massey Dyna VT v Dyna 6.
- Thread starter DeeGee
- Start date
Looks pretty cool in person
ollie989898
Member
My buddy drives trucks in the states and says most of the trucks these days are all automatics anyway?!
ollie989898
Member
In the truck world the trend is for big displacement engines that run at relatively low speeds.
The engine in a tractor has to be flexible, pulling a plough all day one minute where it's all low revs and big torque and the next minute on a mower wound up to get the necessary PTO speed and power output. What is more you have a choice of basically 3 industry accepted input speeds as well so you can't just fudge it with a cheating gearbox.
ollie989898
Member
There are loads of big displacement trucks.
A truck only achieves economy by low revs and constant gear changes. Be a pain in a tractor wouldn't it? I wonder what instigated vario
- Location
- Pembrokeshire
Power and torque delivery is totally different using a vario or powershift box. When you downshift a manual/powershift you instantly disconnect drive, move/change clutch packs and then slam all the torque back to the wheels causing wheel slip. Ive got a claas vario up a bank that the other hexashift/dyna 6 couldn't do it. Identical engines, weight and trailers. The vario changes the ratio gently as not to shock the system, allowing engine to stay in peak torque/power rpm range while maintaining traction.
- Location
- Co antrim
Finally some1 that has a claas vario. Iv wondered for ages about them but no1 seems to know about them. Whats it like compared to other brands? Is it thier own tranny in it?
- Location
- Pembrokeshire
Drove mainly a Arion 660 for about 3 months earlier this year. 185hp with boost above 15kph to 205hp. The 600 series c-matic I think is claas built and the larger axions 800-900 are zf boxes.
Pros -
As simple to use as any other vario, no selectable ranges as such but 3 set speeds can be set with cruise in each 'range'
Smooth delivery of power
3 months no issues pulling silage trailers, slurry tankers and a grassland subsoiler
Cons -
Can be quite tardy at times, pulling away with load from a junction the ratio it picks can sometimes be too much so a little jolt as it winds down to pull away.
If you set a speed ie 2 mph the screen makes it 2.01mph instead, which to me is bizarre
Sorry I ment in big displacement engines in tractors.
Not exactly. The sisu high torque engine seems to sit about 1600 rpm. Pretty low revs. And pto's can have any amount of gears you like. I thought lorry engines ran generally faster than ag stuff. At least the governor is set higher..
brentnz
Member
- Location
- New Zealand
That’s TMS. Simply keeps engine rpm within that range. It is not traction control
- Location
- Pinnaroo. South Australia
Fendt slip control using gps is unbelievable what it can do. Never seen a tractor control a subsoiled like they can.
Foxcover
Member
29mpg software?!
My local haulier went back to manual gears after an automatic. Says there is no issue shifting gears and cheaper to run. Much less shifting when the engine is on top of the job, possibly no shifting required on some field work if the engine has enough power. The truck is efficient largely as the transmission has minimal losses. I would bet myA truck only achieves economy by low revs and constant gear changes. Be a pain in a tractor wouldn't it? I wonder what instigated vario
So they lift the subsoiler as it starts to spin? It's a nightmare to plough this place, plough ends up 2 inches in the ground with the tractor still stuck.. and that's working the lift manually.
My local haulier went back to manual gears after an automatic. Says there is no issue shifting gears and cheaper to run. Much less shifting when the engine is on top of the job, possibly no shifting required on some field work if the engine has enough power. The truck is efficient largely as the transmission has minimal losses. I would bet myA truck only achieves economy by low revs and constant gear changes. Be a pain in a tractor wouldn't it? I wonder what instigated vario
And also an efficient transmission. I would bet that my old synchro transmission high speed tractor would use less diesel on hard haulage than a vario. The fastrac feels like 220 hp in, 120hp at the wheels. Easy to drive but slow and thirsty.A truck only achieves economy by low revs and constant gear changes. Be a pain in a tractor wouldn't it? I wonder what instigated vario
Deerefarmer
Member
- Location
- USA
What do think we've been trying to tell you?! Of course it does. It's the ultimate machine for that type of work
No help on the trailer unfortunately.. be interesting to see if the fendt lift can overcome our hills.
- Location
- Pinnaroo. South Australia
It does yes but because it’s always monitoring it rarely lifts it very far. Brilliant