Spa is the hardest circuit of the year for the Power Units. Over 65% of the 7km track is spent flat out, which translates as around 73secs per lap, the longest accumulative wide open throttle time of the year. The first period of sustained throttle is the climb from the La Source hairpin to the chicane at Les Combes. It takes around 25secs with the driver flat on the throttle throughout. The distance is only slighter shorter than a runway at Charles de Gaulle airport. Almost all of sector three is taken flat out. From Stavelot through Blanchimont to the Bus Stop chicane, the Renault Energy F1 will be at wide open throttle for 20secs. The remainder of the throttle time comes from the bursts...
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