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Re: Bugatti Chiron hits 304mph
[Re: JKD]
#1635418
10/09/2019 11:25
10/09/2019 11:25
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Joined: Feb 2006
Posts: 5,390 Essex
Trappy
Forum is my life
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Forum is my life
Joined: Feb 2006
Posts: 5,390
Essex
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More power simply equals more speed, regardless of aerodynamics. I'd suggest the biggest limiting factor is the composition of tyres.
I'm going to dig out the specs of the Chiron on that note actually and run the numbers. I recently did it for the McLaren F1 and have decided the 243.1mph claimed was fabricated. It just makes no sense. It's actually quite a complex story when you look into the five prototypes that were used in different road tests. They were all so different. Officially it only made 221mph due to gearing. Increasing the rpms allowed for 230mph (confirmed by my calculator) but the 243 would need well over 750bhp.
I'll get back on the Chiron in a bit
F****** b****** thing...
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Re: Bugatti Chiron hits 304mph
[Re: JKD]
#1635419
10/09/2019 11:57
10/09/2019 11:57
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Joined: Feb 2006
Posts: 5,390 Essex
Trappy
Forum is my life
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Forum is my life
Joined: Feb 2006
Posts: 5,390
Essex
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This Chiron was tuned from 1479bhp to 1579bhp and had some aerodynamic alterations. I reduced CD to 0.34 to 0.36. Also, 7th gear was increased. I changed the ratio from 0.55 to 0.5. Here are the numbers.
Speed (mph) Time (seconds) 10 0.4 20 0.8 30 1.3 40 1.7 50 2.1 60 2.5 70 3.0 80 3.5 90 3.9 100 4.4 110 4.9 120 5.4 130 6.0 140 6.6 150 7.3 160 8.0 170 8.7 180 9.7 190 10.7 200 11.7 210 12.8 220 14.3 230 15.9 240 17.7 250 19.6 1/4 Mile Time: 9.16 1/4 Mile Terminal: 174.9 0-400m Time: 9.13 0-400m Terminal: 174.5 1km Time: 15.68 1km Terminal: 228.6 1/2 Mile Time: 13.72 1/2 Mile Terminal: 216.3 1 Mile Time: 21.27 1 Mile Terminal: 256.5 Top Speed (mph): 300.1 Top Speed (rpm): 6789 Top Speed (gear): 7th
F****** b****** thing...
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Re: Bugatti Chiron hits 304mph
[Re: Nigel]
#1635428
10/09/2019 19:24
10/09/2019 19:24
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Joined: Oct 2008
Posts: 6,783 In the coupe.
magooagain
Club Member 259
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Club Member 259
Forum is my life
Joined: Oct 2008
Posts: 6,783
In the coupe.
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Interesting- the Chiron gets to 100 in about half the time of my Coupe. By the time my Coupe has done a quarter mile at about 110mph, the Chiron has done half a mile and is doing over 210
I therefore calculate that the Chiron is about twice as good as a Coupe..... Then you're coupe is a bargin Nigel. How does £750,000 sound as an offer? You may have to wait till I get paid next Friday mind.
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Re: Bugatti Chiron hits 304mph
[Re: magooagain]
#1635436
11/09/2019 05:37
11/09/2019 05:37
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Joined: Dec 2005
Posts: 17,366 Staffordshire
Nigel
Forum veteran
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Forum veteran
Joined: Dec 2005
Posts: 17,366
Staffordshire
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Then you're coupe is a bargin Nigel. How does £750,000 sound as an offer? You may have to wait till I get paid next Friday mind. Hmm - bit of a cheeky offer - you’ll need to let me think about it....
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