Belgian Grand Prix: Engineer's guide to Spa-Francorchamps

An engineer's guide to Spa-Francorchamps, venue for the Belgian Grand Prix - the eleventh round in the 2013 F1 World Championship.
27.08.2011- Saturday Practice, Atmosphere
27.08.2011- Saturday Practice, Atmosphere
© PHOTO 4

The Circuit

Turn 1: A tight firs🌠t corner with heavy braking down to 60kph before leading into the downhill sectio✤n.

Turn 2: The run down Eau Rouge and into Raidillion creates extreme suspensi🍌on compression as the relief changes from downhill to uphill. Good eng❀ine power is required for the uphill drag.

Turn 5: Top speeds of 330kph - one of the highest of the season - before braki𓃲ng down to 3rd gear and 140kph for this𒅌 right hander.

Turn 8: Rivage provides a good challenge as it is a medium speed 180 degree corner he🍬ading straight into Turn 9. Good balance and change of direction are required here.

Turn 10: Pouhon is a high speed left-hander,𒀰 wi🌼th entry taken at nearly 300kph.

Turns 14 + 15: Turn 14 is taken at 140kph before the cars acce🦩lerate through Curve Paul Fr?re - which൩ is taken at 100kph faster than that - before leading into the flat out Turns 16 and 17.

Turn 18: With heavy braking into the chicane after a prolonged high speed section, the brakes need to be ready instantly. Turn 18 provides a good overtaki⛦ng opportunity.

The Car

Front Wing: Teams tend to use comparably more front win𝕴g here compared to lower speed tracks to help diminish🗹 understeer in the high speed corners.

Rear Wing: Spa is very much an aerodynamic efficiency circuit where you need a reasonable amount of downforce without too much detrimental drag. Teams run a simil♌ar amount 🃏of rear wing to Canada which is a medium downforce setting.

Suspension: This🐬 is primꩲarily a high speed circuit and there isn't much use of the kerbs, so suspension is tailored to high speed balance rather than low speed travel.

Brakes: There are not many braking de💖mands here ♏which means the focus is on keeping the brakes warm so they work immediately when required. There are three major braking areas; into the first corner, the Turn 5 chicane, and then the former bus stop chicane. These sections also offer the main overtaking opportunities.

Tyres: This is a circuit whiꦕch puts high demand on the tyres. Also, the weather in the Ardennes can be very variable - even over the course of a lap - so tyre choice is crucial.

Engine: You need an engine with a strong top end here; especially for the drag up Raidillon and the Kemmel Straight which follows, as this is slightly uphill all the way to Turn 5. El💯sewhere too, good horsepower is rewarded in many s🃏ections of the lap, especially due to its undulating nature.

Feature courtesy of Lotus F1 Team

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