Rear fenders and cab are frickin' ugly. Let's hope that they're like that to fool us.
A completely manual gear shift would suit me.They are certainly due for a major revamp. The D4/D6 transmission has been in production since 2005/2006 approximately, with mainly software updates, which while not being as long lived as the 100/200 series/35/65 six and eight speed transmissions, isn't far off.
Do hope they don't follow fashion with a robotised manual sequential dual clutch type system though. Far too much synchromesh with multiple wearing parts involved for my liking. Repair costs are already eye-watering but could be really really torturous on these transmission types. I would prefer it if they kept to six speed planetary units with perhaps closer ratios and a couple of extra ranges, sticking to a semi-poweshift with a simpler driver interface. Certainly no more 'complications'. Drivers are already overwhelmed by transmission 'complications'.
Substantially refining and improving what they already have, plus a complete overhaul and simplification of its controls would be my ideal for a proper revamp. Nothing they do in terms of a completely new design is likely to significantly improve affordability, mechanical efficiency of operation or productivity in the field compared with their current offering of D6 and D/VT. They should expend their energy on making better and more reliable rather than making completely different for the sake of it.
But what do I know, I only own, pay the running costs and operate tractors.
Just like a VT thenA completely manual gear shift would suit me.
Low box up to 30k ?
And a high box upto 50k just as it is now.
Surely that would give a good overlap of years in the main working range ?
A completely manual gear shift would suit me.
Low box up to 30k ?
And a high box upto 50k just as it is now.
Surely that would give a good overlap of years in the main working range ?
that photo is spot on you can see the guy on the passage seat on the laptop going what the f++++ is wrong with it now
Wasn't thinking completely manual.Manual gearbox will never be an option on any tractor over 120hp offered in the UK by any big brand for professional farmers and contractors, I venture to guess. The productivity handicap compared to a semi-powershift is massive on the majority of jobs apart from road haulage and stationary work.
Wasn't thinking completely manual.
Just a easy high low lever that would double the gears. Dyna 48 [emoji3]
While you are correct that a box full of worn synchro’s is a financial disaster, I am very interested to see how long the Deere dd type of gearbox actually lasts for. The two main factors that influence synchro lifespan are the rotating speed difference and the rate at which engaged. In the case of dyna 6 the computer has to throw the next range in as fast as possible to avoid you rolling to a stop, and you have already traveled through 6 splits therefore a fairly big jump in speed difference. On the d4 box in our old Renault you had an big jump on the 4 synchro gears and really had to pull hard on the manual lever, makes you realise how hard the robotised shift has to work.. as far as I can see the dd transmission will usually be bumping up one gear at at a time with only a small synchro speed increase with each shift, and the computer can probably allow a slightly longer time engage time as the gear is basically pre selected. This should all add up to less wear involved. If the tractor can reach 8-10k hours then be rebuilt for 10-12k that is probably on course with p/s and vario ‘s. And if the tractor is on haulage work, you are getting on with the job.. vario’s are a joke on the road...They are certainly due for a major revamp. The D4/D6 transmission has been in production since 2005/2006 approximately, with mainly software updates, which while not being as long lived as the 100/200 series/35/65 six and eight speed transmissions, isn't far off.
Do hope they don't follow fashion with a robotised manual sequential dual clutch type system though. Far too much synchromesh with multiple wearing parts involved for my liking. Repair costs are already eye-watering but could be really really torturous on these transmission types. I would prefer it if they kept to six speed planetary units with perhaps closer ratios and a couple of extra ranges, sticking to a semi-poweshift with a simpler driver interface. Certainly no more 'complications'. Drivers are already overwhelmed by transmission 'complications'.
Substantially refining and improving what they already have, plus a complete overhaul and simplification of its controls would be my ideal for a proper revamp. Nothing they do in terms of a completely new design is likely to significantly improve affordability, mechanical efficiency of operation or productivity in the field compared with their current offering of D6 and D/VT. They should expend their energy on making better and more reliable rather than making completely different for the sake of it.
But what do I know, I only own, pay the running costs and operate tractors.
6000 hrs on one Dd at work, don't ask me details, boss just said gearbox pigged now dealer has to come twice a day to filter oil as bits of dirt keep blocking something and steering won't work!While you are correct that a box full of worn synchro’s is a financial disaster, I am very interested to see how long the Deere dd type of gearbox actually lasts for. The two main factors that influence synchro lifespan are the rotating speed difference and the rate at which engaged. In the case of dyna 6 the computer has to throw the next range in as fast as possible to avoid you rolling to a stop, and you have already traveled through 6 splits therefore a fairly big jump in speed difference. On the d4 box in our old Renault you had an big jump on the 4 synchro gears and really had to pull hard on the manual lever, makes you realise how hard the robotised shift has to work.. as far as I can see the dd transmission will usually be bumping up one gear at at a time with only a small synchro speed increase with each shift, and the computer can probably allow a slightly longer time engage time as the gear is basically pre selected. This should all add up to less wear involved. If the tractor can reach 8-10k hours then be rebuilt for 10-12k that is probably on course with p/s and vario ‘s. And if the tractor is on haulage work, you are getting on with the job.. vario’s are a joke on the road...