truckingtopics.co.uk/euro6fh16.html
so Scania gets to enjoy a few months as ‘top dog’ in Europe.
Bit odd them having a lowest rating at 550bhp when the highest FH13 is 540bhp. Why with modern technology cant they produce a manual box that can handle the torque?.
NB12:
Bit odd them having a lowest rating at 550bhp when the highest FH13 is 540bhp. Why with modern technology cant they produce a manual box that can handle the torque?.
With a manual gearbox it’s the strength if the teeth and what the bearings can handle…You could probably use titanium ,but that isn’t cheap and is difficult to machine .and they are also limited to the szie of the gearbox…So it is a balancing act
I suspect they do a modern version of the ‘boot slip’ test which Ford did on the original Transconti.
Truck loaded and in gear on an incline in neutral, rev it up and let the clutch pedal fly up. If something breaks in the drivetrain then it’s probably not strong enough!
With the massive torque that these engines have they probably think it’s best to let a computer control the clutch/throttle interface.
One reason why the truck manufacturers which use ‘off the shelf’ gearboxes don’t take on Scania and Volvo in the hp/torque stakes is I suspect that the transmission makers’ warranty department is a bit nervous.
I think that was one of the reasons Merc first went the route of doing their own (automated) gearbox…anyone remember the EPS?
NB12:
Bit odd them having a lowest rating at 550bhp when the highest FH13 is 540bhp. Why with modern technology cant they produce a manual box that can handle the torque?.
Does the 550bhp FH16 have more torque than a 540bhp FH?
Maybe they feel the ishift box is better than the manual for a couple of reasons?
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As has been said takes away the human element.
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The manual boxes are syncromesh, but I’m pretty sure that the ishift box is constant mesh, which I think are stronger, so more capable to handle the high power loads.
The synchro manual versus constant mesh iShift is a fair point. Besides that though anyone who’s driven a manual big Volvo in the last 10/11 years won’t be mourning the loss - since they went to cable shift they’ve been bloody awful. On the other hand, iShift is brilliant. No brainer.
Would think they could make a manual box to cope. When scania 1st brought the 620 out they said it’d be auto only due to the power/torque. Our latest ones are back to manual though so they must’ve improved the gearbox.
There is a lot of technology out there for gearboxes and clutches, I’m guessing it’s just to expensive though. The latest Moto GP bikes have seamless shift gearboxes where they are accelerating up through the gears without closing the throttle and barely losing any drive, some fancy tractors have about 21gears and 9 clutches, I’m guessing these will be auto or semi auto boxes.
You can get a R620 with a manual gearbox now?.
NB12:
There is a lot of technology out there for gearboxes and clutches, I’m guessing it’s just to expensive though. The latest Moto GP bikes have seamless shift gearboxes where they are accelerating up through the gears without closing the throttle and barely losing any drive, some fancy tractors have about 21gears and 9 clutches, I’m guessing these will be auto or semi auto boxes.You can get a R620 with a manual gearbox now?.
Yes the 1 i drive is manual, we also have 4 r560’s with manual, all 12/62 plates. Manuals return 0.5 mpg better than opticruise and the boss says it stops us getting lazy.