blue estate:
Technical lesson for you
Most trucks are a manual box and clutch with air driven electronic auto shifter and de clutcher ( hence you still hear the clunk of the splitter )
Most cars a full CVT continuous variable transmission than is constantly engaged in drive unless park or neutral is selected
You will find that in a truck with auto box once in motion has no use of the clutch until you come to a stop, the ECU will match engine to gearbox speed precisely on every gear change including splits going into neutral to make the change, which is why you will hear the exhaust brake being used on some fast changes.
Juddian even as a mere mechanic you can tell the good from the bad drivers /or how standards have dropped,the ones who constantly knock bits of the vehicle ,and wonder what the issue is afterall it is a tool …They don’t realise these tools are not cheap to repair …Even simple things like not being able to put the correct fluids in the correct tanks ,shows hw standards have indeed dropped …I have seen drivers who have asked how to hook up to a trailer !! The worst being car transporter drivers who don’t know how to operate a VBG coupling …If I have to drop the trailer I sure as hell am not reconnecting it …Too many customers then looking to sting us if something goes wrong ,even though it Is the drivers responsibility to make sure all is connected and safe …Even I our trade the more complicated it becomes the more it is being dumbed down joe public doesn’t realise what is involved in trying to fix it and still think its hammer bashing …And the apprentices nowdays are not interested or it may just be the clowns we take on ( no insult to you ref you pic lol )
raymundo:
Quote Carryfast …
‘‘The usual correct driving practice when stationary in most cases should be handbrake on in neutral whether manual or auto.Anything else is just laziness.’’ unquote
Then I must be of the most lazy brigade as I never used a handbrake on any auto I’ve owned and there’s been quite a few and there’s no need to knock them into neutral either, and the Passat I have now has the auto hold facility. Technology has come a long way since the days of the Allegro …
I was told years ago, so not sure if true or not, that the UK market was the only place that insisted auto or vehicles fitted with a park gear/brake function also had to be fitted with a handbrake apparently other countries were happy with just the park function!
raymundo:
Quote Carryfast …
‘‘The usual correct driving practice when stationary in most cases should be handbrake on in neutral whether manual or auto.Anything else is just laziness.’’ unquote
Then I must be of the most lazy brigade as I never used a handbrake on any auto I’ve owned and there’s been quite a few and there’s no need to knock them into neutral either, and the Passat I have now has the auto hold facility. Technology has come a long way since the days of the Allegro …
I was told years ago, so not sure if true or not, that the UK market was the only place that insisted auto or vehicles fitted with a park gear/brake function also had to be fitted with a handbrake apparently other countries were happy with just the park function!
All the automatic hire cars I’ve had in the USA had a foot-pedal operated parking brake.
Buckstones:
I was told years ago, so not sure if true or not, that the UK market was the only place that insisted auto or vehicles fitted with a park gear/brake function also had to be fitted with a handbrake apparently other countries were happy with just the park function!
All the automatic hire cars I’ve had in the USA had a foot-pedal operated parking brake.
[/quote]
Was just going to say similar about the floor operated parking brake, I had one on a Chevrolet Impala.
And one day when I can be arsed I want to find out how the auto hold works on me Passat
The floor peddle on mine was quite close to the foot brake one and if you weren’t careful you could get quite a smack on yer ankle bone when you twisted the handle …
the maoster:
My Merc CLK has a foot pedal operated handbrake. Never use it on account of the bloody awful racket it makes when released.
Maoster, you’se a pro, keep pressure on the pedal when you release the handle and control the release with your foot, total silence
Every day is a skool day! Cheers Juddian, I’ll try that when I next get in it.
There’s another good reason for using it mate, try and operate the parking brake now and again when moving to clean the shoes up, but most importantly clean the inner drums up, or (as i found out) the rust on the drum friction surface gets deep and before you know it its worn massive grooves into the brake shoes themselves, so when i went to put new rear discs on i found the shoes were so badly grooved to the gouges in the inner drum that by the time i’d sanded the grooves out the shoes would have been down to the metal , cheap as chips the parts mind.
Now then the fun of doing the job, the disc/drums might be a doddle to change but by hell the shoes aint, ask me how i know this , my lovely old neighbour learned lots of new words that day and the blood blisters took ages to fade cos i stupidly changed the shoes on my W124 without buying the special tool needed to release the horseshoe clips , oww
Mind you, you being a man of means could get your chap to do such jobs whilst you saunter up the wine bar in your cravat and smoking jacket
Juddian:
Mind you, you being a man of means could get your chap to do such jobs whilst you saunter up the wine bar in your cravat and smoking jacket
That thought was actually running through my head way before I reached the end of your post mate! Pointless having a pet mobile mechanic in the family and not abusing his good nature . It’d be a bit like having a dog and barking myself
Radar19:
I have a 7 speed auto on my Merc A-Class and its really snappy changing gear. Setting off though its a bit laggy, not Daf level but it is noticeable.
I have a C class with the new 9 speed auto and flappy pedals. In comfort and eco mode there is a slight lag when pulling away from a standing start but the lag disappears if using sport or sport plus mode. The only way to identify the gear changes is to watch the dash display going up or down.
Lol I’ve done that rookie mistake when I went out on the public road for the first time in an auto DAF.
“Have you driven auto before”
“Yes”
Get to the junction outside the test facility, stop on the hill at a red light on the footbrake. Light turns green, I go for the gas expecting the truck not to move. Aaaaand cue loads of horn-spam from the car behind
Instructor: “Oh, yes, it’s AS-tronic so is different to auto in a car”
Radar19:
I have a 7 speed auto on my Merc A-Class and its really snappy changing gear. Setting off though its a bit laggy, not Daf level but it is noticeable.
Just had my A180 remapped to around A200 level but optimised. Got rid of the throttle lag and smoothed the changes.
This box uses 2 pumps, one hydraulic and one electric so the clutches always have oil pressure. Should prolong life too. Motorcycle style wet clutches of course, hydraulic actuation.
blue estate:
Technical lesson for you
Most trucks are a manual box and clutch with air driven electronic auto shifter and de clutcher ( hence you still hear the clunk of the splitter )
Most cars a full CVT continuous variable transmission than is constantly engaged in drive unless park or neutral is selected
Very few car gearboxes are cvt mainly because they are crap.Most car auto boxes are epicyclic gear trains that use wet multiplate clutches to either lock or unlock the annulus,sun or planet carriers.Truck “auto” boxes are a hybrid that in comparison to a full torque converter driven transmission such as Detroit,Alison or Voith are bloody cheap rubbish.
, my lovely old neighbour learned lots of new words that day and the blood blisters took ages to fade cos i stupidly changed the shoes on my W124 without buying the special tool needed to release the horseshoe clips 
, oww 
. It’d be a bit like having a dog and barking myself 