MC Shift – What type of gearbox is it really?

JMS

JMS

Member
Messages
264
Great thread - really interesting reading.

mine is on 30k miles and 56% worn.
Was 51% worn when purchased at 28k miles in May.

I had hoped to get past 50k miles before needing to change the clutch *(sigh), I guess I was wishfully hoping the wear rate was linear.

No regrets in not getting the ZF box though.
 
C

Cdn17Sport6MT

Junior Member
Messages
72
cheburator said:
The SMGIII also runs Valero twin disc clutch with friction discs that are 228mm in diameter vs the M and F 225mm ones. The Porsche 928 runs a Sachs dual disc 225mm clutch with a single mass flywheel… Getrag/Williams getting one over MM/Ferrari?
Click to expand...
Well then it sounds like the Magneti-Marelli programing of the NCR (nodo cambio robotizato) is such that they did not give a nod to clutch life preservation. As far as quality of control viz. drive quality - I think they succeeded... but somehow the other mfrs' executions are superior for clutch life.

It could also be "shorter" first gears in the other cited vehicles. In the Masers you can do well-nigh 45 mph in first!
 
Bebs

Bebs

Member
Messages
3,360
will-w said:
I think that must be a record?
Click to expand...
Could be Will. I did notice that SportsItalia tend to replace clutches at 40,000 and that the most was around 50,000 miles.
Of course I suspect it does help, that I do take it on a lot of road trips to France, Holland and Denmark which rakes up the mileage.
 
JMS

JMS

Member
Messages
264
@Bebs
- I’m trying to make understand the figures in your report and can’t get my head around it.

Guessing the numbers represent either:

1: time spent in each gear (either revs or actual time).

Or

2: number of times the clutch has moved through that gear

It can’t be 2 as the numbers would decrease (can’t get to 4th without going through 1/2/3)

Which leads me to wonder- do you often short-shift through 2nd gear?

As the value for first gear is higher, does this mean you are often in stop/start traffic? (which doesn’t correlate with such low clutch wear)

I just don’t get it.

I’m trying to learn your secrets to promote clutch longevity as I’m at 50% on 30k miles.
 
Zep

Zep

Moderator
Messages
9,288
It’s the number of times the gear is engaged. You’d expect 1st to be the highest. The low second gear count suggests very little stop start to me.
 
CatmanV2

CatmanV2

Member
Messages
48,802
Zep said:
It’s the number of times the gear is engaged. You’d expect 1st to be the highest. The low second gear count suggests very little stop start to me.
Click to expand...

Seems to indicate that the TCU can block shift (i.e. miss gears) I recall there was some discussion about this a while back?

I'd guess the low 2nd would be caused by coming to a stop, going from 3rd to 1st? Perhaps double paddles to go to neutral?

C
 
Bebs

Bebs

Member
Messages
3,360
JMS said:
@Bebs
- I’m trying to make understand the figures in your report and can’t get my head around it.

Guessing the numbers represent either:

1: time spent in each gear (either revs or actual time).

Or

2: number of times the clutch has moved through that gear

It can’t be 2 as the numbers would decrease (can’t get to 4th without going through 1/2/3)

Which leads me to wonder- do you often short-shift through 2nd gear?

As the value for first gear is higher, does this mean you are often in stop/start traffic? (which doesn’t correlate with such low clutch wear)

I just don’t get it.

I’m trying to learn your secrets to promote clutch longevity as I’m at 50% on 30k miles.
Click to expand...
Morning JMS,

Hand on heart I honestly don’t understand those readings either. Perhaps Matt @conaero can help explain?
I rarely drive in stop/start traffic, 80% of the time I just leave it in regular auto (not sport auto). I try to be aware of mechanical empathy in general, the clutches on my 360 manual have likewise always lasted 50,000+ miles.
As I said I do rake up the miles motorway crunching which accounts for at least half the mileage I do (just sitting in sixth)
My clutch was replaced by the previous owner at 60,000 km (37,500 miles) which I have an invoice for. I took possession of the car at 100,000 km (62,500 miles) and am now on 120,000 km (75,000 miles)
That equates to roughly 37,500 miles since clutch replacement with a current clutch reading of 33%.
The previous owner was a fellow Dane and I suspect he also used it for high mileage road trips.
 
  • Like
Reactions: JMS
Zep

Zep

Moderator
Messages
9,288
Could be. To me it’s just that it passes through second spends more time in the middle gears after pulling away and then comes back less often.
 
ChrisQP09

ChrisQP09

Member
Messages
2,998
I’ve seen new MC Shift models as late as 2019. This being the case, how can the mc shift cars be supported if parts availability is being scales back in some areas. Lets say a 19’ car needed a specific mc shift part that was discontinued how is this allowed?
 
Chrisb2015

Chrisb2015

Member
Messages
541
Surely it would only be a 19 registered car if it was sold and stored and not registered, as the last single clutch cars were the Strads in 15. They will ultimately need to make those parts available though as the EU mandates minimum support for 10 years after sale. I guess it is out of stock rather than definitively no more production as that would mean every Strad, Scud, 360 CS, 599 will be affected.

I had experience of this a couple of years ago when a QP GTS I wanted needed a new instrument cluster and I was told by everyone the part was unavailable, with no ETA for more production. It is now back in stock so I guess they don’t produce new batches until they have people jumping up and down asking for them.
 
ChrisQP09

ChrisQP09

Member
Messages
2,998
Chrisb2015 said:
Surely it would only be a 19 registered car if it was sold and stored and not registered, as the last single clutch cars were the Strads in 15. They will ultimately need to make those parts available though as the EU mandates minimum support for 10 years after sale. I guess it is out of stock rather than definitively no more production as that would mean every Strad, Scud, 360 CS, 599 will be affected.

I had experience of this a couple of years ago when a QP GTS I wanted needed a new instrument cluster and I was told by everyone the part was unavailable, with no ETA for more production. It is now back in stock so I guess they don’t produce new batches until they have people jumping up and down asking for them.
Click to expand...
Even a 2015 car is only 8 years old though
 
Scaf

Scaf

Member
Messages
6,588
Interesting that you say you mainly drive in “Auto” yet have great clutch life, as most posts on here would suggest “Auto” is not great from clutch wear.

I suspect your readings and clutch life are influenced by you use of the car as a “Grand Tourer” in the traditional sense, with regular long distance Euro trips.
 
Bebs

Bebs

Member
Messages
3,360
Scaf said:
Interesting that you say you mainly drive in “Auto” yet have great clutch life, as most posts on here would suggest “Auto” is not great from clutch wear.

I suspect your readings and clutch life are influenced by you use of the car as a “Grand Tourer” in the traditional sense, with regular long distance Euro trips.
Click to expand...
Yes, I’m not sure if we should put that ‘auto is bad for wear’ to bed as an old wifes’ tale Scaf.

Agree totally that long distance touring must have a prolonged influence on clutch wear, given there are likely to be far fewer gear changes doing say 400-500 miles on a motorway run.
 
will-w

will-w

Member
Messages
208
ChrisQP09 said:
I’ve seen new MC Shift models as late as 2019. This being the case, how can the mc shift cars be supported if parts availability is being scales back in some areas. Lets say a 19’ car needed a specific mc shift part that was discontinued how is this allowed?
Click to expand...

Have any links? They should all be ZF models with the MC AutoShift software at that age.
 
CatmanV2

CatmanV2

Member
Messages
48,802
will-w said:
Have any links? They should all be ZF models with the MC AutoShift software at that age.
Click to expand...

There is a HUGE complexity around MC *trim* and MC gearbox. Especially in Leftpondia. And let's not even go there with Stradale.....

C
 
You must log in or register to reply here.