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Welshbeef

Original Poster:

16,176 posts

78 months

[news] 
Tuesday 1st November 2011 quote quote all
This epic car managed a 11.5 second time for this challenge back in the early 1960's however it took a F1 LM edition to beat it and now a veyron does it in 9.96 seconds.

The question I have is does anyone have the breakdown of the cobra time ie up to 100mph then to zero. The issue I'd like to investigate is IF the cobra had modern brakes suitable to a car with such epic performance instead of 1960's brakes how much quicker could the time be?


Plus isn't it the most stunning looking car?
Plus in the late 1950's an Aston Martin DB4 just broke the 20 second time so just think to drop from 20 seconds to 11.5 seconds.... In a few years and then it took nearly 40 years to better it and today the quickest is only 1.5 seconds quicker????


Know I'd have an original cobra over a veyron every single time without the slightest doubt.

intrepid44

663 posts

80 months

[news] 
Tuesday 1st November 2011 quote quote all
It probably didn't do that time.

Welshbeef

Original Poster:

16,176 posts

78 months

[news] 
Tuesday 1st November 2011 quote quote all
intrepid44 said:
It probably didn't do that time.
Autocar timed it in the same way they tested all other 0-100-0 times.

The engines were quoted to be 450-500bhp but that was very light the fact is they were making 550-600bhp and well over 550ft-lbf


stick100

6,991 posts

48 months

[news] 
Tuesday 1st November 2011 quote quote all
the gkn fff100 held the record for the 0-100-0 which it did in 11.5 secs 12.5 secs in the wet
then the mc f1 matched it

Egg Chaser

4,927 posts

47 months

[news] 
Tuesday 1st November 2011 quote quote all
Slightly off topic, but the Veyron isn't the fastest from 0-100-0. The Ultima GTR720 did it in 9.4 seconds.
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s m

9,482 posts

83 months

[news] 
Tuesday 1st November 2011 quote quote all
intrepid44 said:
It probably didn't do that time.
Was going to say, seconds went much slower back then wink

Most modern cars with great tyres and brakes take 4 seconds plus to get from 100-0 so 7.0->7.5 to 100 would be incredible for the Cobra

Edited by s m on Wednesday 2nd November 00:08

Olivera

1,882 posts

119 months

[news] 
Tuesday 1st November 2011 quote quote all
Egg Chaser said:
Slightly off topic, but the Veyron isn't the fastest from 0-100-0. The Ultima GTR720 did it in 9.4 seconds.
Veyron supersport 0-100-0 in 9.2 seconds.

Speed addicted

2,074 posts

107 months

[news] 
Tuesday 1st November 2011 quote quote all
http://www.germancarforum.com/scans-archive-2007/3...

Scans of the origonal autocar Cobra article.
13.8 seconds 0-100-0. In 1967 with comedy tyres and brakes. They reconed it might go faster with slcks to get rid of some of the tremendous wheelspin.

kinell.

s m

9,482 posts

83 months

[news] 
Tuesday 1st November 2011 quote quote all
Speed addicted said:
http://www.germancarforum.com/scans-archive-2007/3...

Scans of the origonal autocar Cobra article.
13.8 seconds 0-100-0. In 1967 with comedy tyres and brakes. They reconed it might go faster with slcks to get rid of some of the tremendous wheelspin.

kinell.
Sounds more like it - 5 seconds 100-0 ( incl reaction time )

Ken Miles did a 13.2 reputedly with the factory prototype and Chris Amon a 14.5 with the same car

Egg Chaser

4,927 posts

47 months

[news] 
Wednesday 2nd November 2011 quote quote all
Olivera said:
Veyron supersport 0-100-0 in 9.2 seconds.
Good point, I'd forgotten about the Supersport.

RobM77

24,781 posts

114 months

[news] 
Wednesday 2nd November 2011 quote quote all
Didn't a Caterham R500 hold the record for a while?

ellipsis

126 posts

45 months

[news] 
Wednesday 2nd November 2011 quote quote all
Welshbeef said:
The issue I'd like to investigate is IF the cobra had modern brakes suitable to a car with such epic performance instead of 1960's brakes how much quicker could the time be?
Should the question not be how much sooner would it stop with modern tyres? Braking performance (single application) is primarily a function of vehicle mass and tyre adhesion. Provided the brakes are powerful enough to be locked at 100mph but progressive enough to be modulated before the point of lock up, then they are just as adequate now as they were in the 1960's. Modern tyres might also result in slightly better traction off the line, also reducing the overall time.

I do agree, it remains a stunning looking car.

Cock Womble 7

29,908 posts

110 months

[news] 
Wednesday 2nd November 2011 quote quote all
RobM77 said:
Didn't a Caterham R500 hold the record for a while?
Probably. I'm sure the JPE had previously.

swerni

21,544 posts

90 months

[news] 
Wednesday 2nd November 2011 quote quote all
Cock Womble 7 said:
RobM77 said:
Didn't a Caterham R500 hold the record for a while?
Probably. I'm sure the JPE had previously.
12,6 seconds

Held the record for quite a while

DJRC

21,340 posts

116 months

[news] 
Wednesday 2nd November 2011 quote quote all
Welshbeef said:
intrepid44 said:
It probably didn't do that time.
Autocar timed it in the same way they tested all other 0-100-0 times.

The engines were quoted to be 450-500bhp but that was very light the fact is they were making 550-600bhp and well over 550ft-lbf
No they werent.

Welshbeef

Original Poster:

16,176 posts

78 months

[news] 
Wednesday 2nd November 2011 quote quote all
DJRC said:
Welshbeef said:
intrepid44 said:
It probably didn't do that time.
Autocar timed it in the same way they tested all other 0-100-0 times.

The engines were quoted to be 450-500bhp but that was very light the fact is they were making 550-600bhp and well over 550ft-lbf
No they werent.
According to all the forums I've been on that is very much the views.
Remember it is a 427cu huge 7ltr engine built by shellby.

The coupe version of this same car with same engine was clocked on the m1 doing 196mph in 4th gear still accelerating hard. Same engine same weight just more aero.
You can do the maths required to get to such a speed plus of course there are many dyno readings showing 550-600bjp not the 450-500bhp they were quoted

RobM77

24,781 posts

114 months

[news] 
Wednesday 2nd November 2011 quote quote all
Welshbeef said:
DJRC said:
Welshbeef said:
intrepid44 said:
It probably didn't do that time.
Autocar timed it in the same way they tested all other 0-100-0 times.

The engines were quoted to be 450-500bhp but that was very light the fact is they were making 550-600bhp and well over 550ft-lbf
No they werent.
According to all the forums I've been on that is very much the views.
Remember it is a 427cu huge 7ltr engine built by shellby.

The coupe version of this same car with same engine was clocked on the m1 doing 196mph in 4th gear still accelerating hard. Same engine same weight just more aero.
You can do the maths required to get to such a speed plus of course there are many dyno readings showing 550-600bjp not the 450-500bhp they were quoted
186mph, and I've never heard that it was still accelerating at that point.

300bhp/ton

29,629 posts

70 months

[news] 
Wednesday 2nd November 2011 quote quote all
swerni said:
Cock Womble 7 said:
RobM77 said:
Didn't a Caterham R500 hold the record for a while?
Probably. I'm sure the JPE had previously.
12,6 seconds

Held the record for quite a while
Aren't some of the claims (not this necessarily) a little misleading.

As in some tests timed an entire run 0-100-0, while other tests time the 0-100 bit, the reaction time and the 100-0 bit and then cherry pick the best of each to create a theoretical 0-100-0 time.

RobM77

24,781 posts

114 months

[news] 
Wednesday 2nd November 2011 quote quote all
300bhp/ton said:
swerni said:
Cock Womble 7 said:
RobM77 said:
Didn't a Caterham R500 hold the record for a while?
Probably. I'm sure the JPE had previously.
12,6 seconds

Held the record for quite a while
Aren't some of the claims (not this necessarily) a little misleading.

As in some tests timed an entire run 0-100-0, while other tests time the 0-100 bit, the reaction time and the 100-0 bit and then cherry pick the best of each to create a theoretical 0-100-0 time.
The time (as with most modern road car times) was done by Autocar under strict test conditions, which are a realtime live run, including accelerator to brake transfer time.

What's interesting is that occasionally Autocar invite a fast superbike along. I remember the GSXR1100 they had one year got to 100mph in 5.4 seconds making it the fastest proper road legal vehicle there, and then took longer than the Fiesta 1.1 they had to brake from 100mph back to rest again. biggrin

DJRC

21,340 posts

116 months

[news] 
Wednesday 2nd November 2011 quote quote all
RobM77 said:
Welshbeef said:
DJRC said:
Welshbeef said:
intrepid44 said:
It probably didn't do that time.
Autocar timed it in the same way they tested all other 0-100-0 times.

The engines were quoted to be 450-500bhp but that was very light the fact is they were making 550-600bhp and well over 550ft-lbf
No they werent.
According to all the forums I've been on that is very much the views.
Remember it is a 427cu huge 7ltr engine built by shellby.

The coupe version of this same car with same engine was clocked on the m1 doing 196mph in 4th gear still accelerating hard. Same engine same weight just more aero.
You can do the maths required to get to such a speed plus of course there are many dyno readings showing 550-600bjp not the 450-500bhp they were quoted
186mph, and I've never heard that it was still accelerating at that point.
Indeed Rob.
Nor was it the Daytona that was doing said run.

The current Daytona at 2% larger than the original, but with pretty much exactly the same aero figure, comes with 500ponies and was clocked in South Africa at 207mph. Pete Brock is on record as saying they never saw more than 450ponies from the 427 block in the Works cars.

I dont think even Sovereign Cars claim 550 for their immaculate side oiler they have in stock.

You can keep your forums Beef, Ill stick with Brock.
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