Highly scientific experiment - clk63...

[english68]

Advice please.

I have a clk 63 amg.

Nice man at Mercedes said mine does not have LSD (have printed spec-sheet, not PPP and no mention of LSD).

To me, (not expert) it behave like it does.

I resolved to put it up on a ramp somewhere and check by turning one wheel and looking to see what the other one does.

No access to ramp.

So switched off ESP, floored it from a standstill and hey presto:

TWO black lines.

Is this LSD or electronic trickery please???

I'd love to know....

Thank you in advance for any and all suggestions (within reason!!)

[SimNugget]

A CLK63 with PPP? That doesn't sound right.
A truly scientific test would be to have one wheel on wet grass and one on Tarmac, ESP off and boot it.

[english68]

Hi. Thank you for the reply.

It doesn't have PPP but my limited knowledge tells me 2 x black lines = LSD.

I don't know that that's absolutely true though. (???)

No more testing though - this is my own car and I do not want to 'hurt' it!

All the best

[wtdoom]

Call brooklands , give them vin . full spec in 5 mins .
failing that turn off tc and get to a roundabout and hang it .

[english68]

Will do.

(The former, not the latter!)

Thanks

[iluvmercs]

Can you not get two black lines without an LSD, anyway?

As hinted above, the best way to find out would be to attempt a drift or maybe accelerate briskingly while turning 90 degrees.
My old Merc (while not an AMG and very underpowered compared to your car) has no LSD, and in the above situtions, I just get alot of spin from the unloaded inside rear.

I don't have enough power to do it in the dry, but in wet conditions, just nailing the throttle from standstill can spin both wheels.

I'm prepared to be shot down for my lack of LSD knowledge Only means I get to learn

Darren

[4340BB]

No LSD . Sorry.
In a straight line most cars will spin both rear wheels as they are loaded the same.

[jith]

4340BB said:

No LSD . Sorry.
In a straight line most cars will spin both rear wheels as they are loaded the same.

They're not actually. All diffs are assymetrical due to the crown wheel being situated to one side of the pinion. This means that the transmission resistance is greater to one side. It is seldom noticed, but on a powerful engine with high torque output, it will come into play on a fast take-off.

J

[english68]

Does that explain why the rear of my car will pull to one side under spirited acceleration, much like an lsd-equipped car would?

Thanks as ever

[4340BB]

Grabs coat and leaves!
Still no LSD though,