Main challenges of Spa for the Power Units: The long periods of wide open throttle, particularly in sector one. The driver will be on the throttle for around 25secs from La Source to Les Combes, the longest straight of the year. The sweeping bends and changes in altitude also put the fluid systems under huge pressure as the cars follow the rise and fall of the track. Fluids are compressed through the descents but coming over the hill lift and the forces are inverted - it's a job in itself to monitor the internals and ensure the pumps are supplied with fluids at all times.Main energy recovery points: The La Source hairpin and Bus Stop chicane are opportunities for the MGU-K, plus the turns...
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