Sinopec circuit braking analysis

 

 

Sinopec circuit main characteristics :

Length :5.451 m

Number of laps : 56

Tyrewear: medium

Number of braking zones : 9
Brake wear: medium
Time spent under brake : 13 %

Downforce level: medium/high

 

 

2011 – 2010  braking data comparison chart

	Kurve 1	Kurve 3	Kurve 4	Kurve 5
Initial speed 2011  Km/h  :	310	140	291	268
Initial speed 2010  Km/h :	302	139	283	272
Difference :	8	1	8	-4
Final speed 2011  Km/h :	215	93	79	208
Final speed 2010 Km/h :	205	96	83	212
Difference :	10	-3	-4	-4
Stopping distance 2011 m :	54	32	109	30
Stopping distance 2010 m :	60	31	117	36
Difference :	-6	1	-8	-6
Braking time 2011  sec :	0,75	1,04	2,53	0,46
Braking time 2010 sec  :	0,87	0,98	2,62	0,54
Difference :	-0,12	0,06	-0,09	-0,08
Maximum deceleration 2011 g :	5,78	2,17	5,18	4,58
Maximum deceleration 2010 g  :	4,66	1,89	4,21	3,99
Difference :	1,12	0,28	0,97	0,59
Maximum pedal load 2011 Kg :	149	51	136	118
Maximum pedal load 2010 Kg :	132	47	123	114
Difference :	17	4	13	4
Braking Power KW 2011 :	2490	372	2089	1684
Braking Power KW 2010 :	1938	308	1643	1479
Difference :	552	64	446	205

 

	Kurve 6	Kurve 7	Kurve 8	Kurve 9
Initial speed 2011  Km/h  :	199	287	320	255
Initial speed 2010  Km/h :	199	278	313	249
Difference :	0	9	7	6
Final speed 2011  Km/h :	130	88	68	157
Final speed 2010 Km/h :	138	93	73	177
Difference :	-8	-5	-5	-20
Stopping distance 2011 m :	38	102	130	50
Stopping distance 2010 m :	38	109	140	43
Difference :	0	-7	-10	7
Braking time 2011  sec :	0,84	2,28	2,98	0,9
Braking time 2010 sec  :	0,83	2,37	3,07	0,75
Difference :	0,01	-0,09	-0,09	0,15
Maximum deceleration 2011 g :	3,09	5,05	5,97	4,3
Maximum deceleration 2010 g  :	2,66	4,12	4,92	3,52
Difference :	0,43	0,93	1,05	0,78
Maximum pedal load 2011 Kg :	79	133	157	112
Maximum pedal load 2010 Kg :	72	120	143	101
Difference :	7	13	14	11
Braking Power KW 2011 :	822	2006	2649	1510
Braking Power KW 2010 :	689	1580	2121	1193
Difference :	133	426	528	317

 

 

 

   Sinopec circuit features long straights followed with violent sharp brakings, fast turns that require perfect car balance and many slow and medium speed corners . The most violent braking point is at kurve 8 where cars brake from320 km/hand seventh gear to only 68  and first gear loosing 2649 KW of kinetic energy . Lower 2011 entry speed in tight kurves 3 , 4 , 5 , 6 , 7 , 8 , 9  indicates the worse grip level provided by Pirelli tyres compared to Bridgestone . On the contrary higher 2011 entry speed in medium kurve 1 reveals the higher amount of aerodynamic downforce generated by 2011 cars body permitting a faster travel through the corner .

Data : Brembo