300bhp per tonne
Discussion
Wills2 said:
300hp/tonne is a huge amount of power in a road car, you have to be looking at the latest 991 GT3/turbo to gain entry as a standard car and then on into the likes of Ferrari/Lambo/McLaren/R8 [insert mental car of your choice] etc...
Only a few of the AMG/M monsters get to the 300 mark.
VXR8 GTS is a "standard car" that makes the list Probably less than half the price of a GT3 (I have no idea what the Porsche costs).Only a few of the AMG/M monsters get to the 300 mark.
R8VXF said:
Wills2 said:
300hp/tonne is a huge amount of power in a road car, you have to be looking at the latest 991 GT3/turbo to gain entry as a standard car and then on into the likes of Ferrari/Lambo/McLaren/R8 [insert mental car of your choice] etc...
Only a few of the AMG/M monsters get to the 300 mark.
VXR8 GTS is a "standard car" that makes the list Probably less than half the price of a GT3 (I have no idea what the Porsche costs).Only a few of the AMG/M monsters get to the 300 mark.
Caruso said:
Of course when it comes to motorbikes, 300bhp per tonne is just about acceptable for a middleweight commuter bike.
Depends on how far the rider is. My car is about 185bhp/tonne with a full tank of fuel and me in it, which feels plenty.
Edited by kambites on Tuesday 1st September 18:53
Patrick Bateman said:
Bennet said:
If you add an 80kg driver to either of the two cars you list that actually pass the benchmark, they both cease to meet it.
BMW include the driver, some fuel and luggage in that figure, are most manufacturers not the same?However, assuming the quoted weight is actually representative of the real car is a bit of a leap. Many manufacturers quote as much as 5% lighter than reality, and that's before any optional equipment.
otolith said:
DonkeyApple said:
McSam said:
EU kerbweights include a 68kg driver with 7kg luggage.
A small man, with a big hand bag. How European. Remember that cars only have the claimed power to weight ratio at zero mph. As soon as you start moving drag reduces the power available to accelerate the cars mass. And at that point, absolute power counts, not power to weight! Which is why a Mclaren P1 is a lot faster than a Mclaren F1, despite what the bhp/tonne number might say.
Max_Torque said:
Remember that cars only have the claimed power to weight ratio at zero mph. As soon as you start moving drag reduces the power available to accelerate the cars mass. And at that point, absolute power counts, not power to weight! Which is why a Mclaren P1 is a lot faster than a Mclaren F1, despite what the bhp/tonne number might say.
Absolute power never counts; it's power to weight and power to drag ratios that matter. Nedzilla said:
I seem to remember the most powerful of these produced around 930bhp and the minimum weight of the cars was around 600kgs which was obviously achieved as many teams had to make up the extra weight with ballast.
So around 1500bhp/tonne!
Towards the end, I think the top Can-Am teams were claiming something like 1600bhp in qualifying trim in cars weighing around 800kg. I think turbo F1 cars were similar. So around 1500bhp/tonne!
Obviously things designed only to go in straight lines can be an order of magnitude higher again.
Still, for a road car it all seems somewhat academic once you get past a certain point.
Edited by kambites on Tuesday 1st September 20:20
Most kit cars weigh in at 500-650kg, dependent on the donor parts used.
A bog standard 2.0 zetec on 45's gives 170bhp so that makes the requisite 300bhp figure very easily.
Some people will stick 300bhp plus engines in making 500bhp/ton drivers.
Not much cop for taking the wife and two kids out to collect the weekly shop though. Just like a motorbike.
A bog standard 2.0 zetec on 45's gives 170bhp so that makes the requisite 300bhp figure very easily.
Some people will stick 300bhp plus engines in making 500bhp/ton drivers.
Not much cop for taking the wife and two kids out to collect the weekly shop though. Just like a motorbike.
Most kit cars weigh in at 500-650kg, dependent on the donor parts used.
A bog standard 2.0 zetec on 45's gives 170bhp so that makes the requisite 300bhp figure very easily.
Some people will stick 300bhp plus engines in making 500bhp/ton drivers.
Not much cop for taking the wife and two kids out to collect the weekly shop though. Just like a motorbike.
A bog standard 2.0 zetec on 45's gives 170bhp so that makes the requisite 300bhp figure very easily.
Some people will stick 300bhp plus engines in making 500bhp/ton drivers.
Not much cop for taking the wife and two kids out to collect the weekly shop though. Just like a motorbike.
Edited by Hol on Tuesday 1st September 20:33
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