Simon's Murci on WRC Dyno
Discussion
It looks like it's trying to blow out the back wall of the dyno cell! 
Just a thought about the car not running 4WD on the dyno (and a question for those that know).... I thought the Lamborghini VT system, as used on the Diablo VT and Murcielago, is basically RWD most of the time. If the system senses traction problems at the rear, up to 30% of power moves to the front. Is this the case? If it is it would explain why Simon's car only drove the rear wheel rollers and would also suggest there's nothing wrong with the car at all. I'd be interested to know more about the Lamborghini VT system.
Also, my understanding (maybe I've only listened to the wrong people!) is that Gallardo's 4WD system behaves more like Audi's quattro systems - ie the Gallardo is a 4WD car that is able to direct power between axles/wheels to optimise traction.
Anyone care to confirm or otherwise?
Just a thought about the car not running 4WD on the dyno (and a question for those that know).... I thought the Lamborghini VT system, as used on the Diablo VT and Murcielago, is basically RWD most of the time. If the system senses traction problems at the rear, up to 30% of power moves to the front. Is this the case? If it is it would explain why Simon's car only drove the rear wheel rollers and would also suggest there's nothing wrong with the car at all. I'd be interested to know more about the Lamborghini VT system.
Also, my understanding (maybe I've only listened to the wrong people!) is that Gallardo's 4WD system behaves more like Audi's quattro systems - ie the Gallardo is a 4WD car that is able to direct power between axles/wheels to optimise traction.
Anyone care to confirm or otherwise?
CUE99T said:
There is clearly differences in alot of the model years, as Simons scoops go up on-demand when he presses the button on the console upto 40mph whereas mine drop as soon as you move off or turn the engine off!! 
Edited by CUE99T on Friday 16th March 19:44
Mine are the same! Strange!
BossCerbera said:
It looks like it's trying to blow out the back wall of the dyno cell!
Just a thought about the car not running 4WD on the dyno (and a question for those that know).... I thought the Lamborghini VT system, as used on the Diablo VT and Murcielago, is basically RWD most of the time. If the system senses traction problems at the rear, up to 30% of power moves to the front. Is this the case? If it is it would explain why Simon's car only drove the rear wheel rollers and would also suggest there's nothing wrong with the car at all. I'd be interested to know more about the Lamborghini VT system.
Also, my understanding (maybe I've only listened to the wrong people!) is that Gallardo's 4WD system behaves more like Audi's quattro systems - ie the Gallardo is a 4WD car that is able to direct power between axles/wheels to optimise traction.
Anyone care to confirm or otherwise?
Just a thought about the car not running 4WD on the dyno (and a question for those that know).... I thought the Lamborghini VT system, as used on the Diablo VT and Murcielago, is basically RWD most of the time. If the system senses traction problems at the rear, up to 30% of power moves to the front. Is this the case? If it is it would explain why Simon's car only drove the rear wheel rollers and would also suggest there's nothing wrong with the car at all. I'd be interested to know more about the Lamborghini VT system.
Also, my understanding (maybe I've only listened to the wrong people!) is that Gallardo's 4WD system behaves more like Audi's quattro systems - ie the Gallardo is a 4WD car that is able to direct power between axles/wheels to optimise traction.
Anyone care to confirm or otherwise?
Not sure about the exact engineering details or how the torque is split - but the only time I ever "feel" the four wheel drive coming in is at lowish speeds pulling out of 90 degree junctions.
dealmaker said:
Not sure about the exact engineering details or how the torque is split - but the only time I ever "feel" the four wheel drive coming in is at lowish speeds pulling out of 90 degree junctions.
Darren - did you get any further in your Espada hunt? I got told about a very nice, very original Series II recently. Apparently a proper car, timewarp condition.
BossCerbera said:
dealmaker said:
Not sure about the exact engineering details or how the torque is split - but the only time I ever "feel" the four wheel drive coming in is at lowish speeds pulling out of 90 degree junctions.
Darren - did you get any further in your Espada hunt? I got told about a very nice, very original Series II recently. Apparently a proper car, timewarp condition.
Phil,
Gave up after the debacle of the black one! (wonder what happened to it?)
I've been thinking of an Interceptor instead.
Let me know the score on the Series II.
No the traction control was on - never thought about that.. Its goung into Lambo Manchester so all will be revealed next week. Spoke to a Murcie owner today who said he had the same problem and it was simply a lack of oil in the front diff so maybe its that.
However I'm hoping that when it was 'in build' in the factory back in 2004 they decided to build a one off 2wd 'SV' and forgot to tell me mine was the one!
However I'm hoping that when it was 'in build' in the factory back in 2004 they decided to build a one off 2wd 'SV' and forgot to tell me mine was the one!
Gallardo's system is essentially the same as the Murci's (Audi's system is very different, Phil).
Steady state torque split is 30/70 front to rear. At large throttle openings, and where grip is available, the maximum torque split is 18/82. So basically RWD, if you don't want to split hairs (or torque).
This means that Simon's car should have been turning it's front wheels on the dyno (as Andys car infact was).
I seem to recall a factory representative saying that in extreme circumstances, where only one wheel had grip, ALL the power would be shunted to that wheel. I fail to imagine a situation where a 500hp one wheel drive supercar would be a good thing for anyone! Perhaps the speaker had been at the Chianti that morning.
Steady state torque split is 30/70 front to rear. At large throttle openings, and where grip is available, the maximum torque split is 18/82. So basically RWD, if you don't want to split hairs (or torque).
This means that Simon's car should have been turning it's front wheels on the dyno (as Andys car infact was).
I seem to recall a factory representative saying that in extreme circumstances, where only one wheel had grip, ALL the power would be shunted to that wheel. I fail to imagine a situation where a 500hp one wheel drive supercar would be a good thing for anyone! Perhaps the speaker had been at the Chianti that morning.
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