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A drilled brake rotor and its caliper on an upright, the hub's wheel studs around the centre

Subsystem 03 of 13

Brakes & Pedals

Focused on precision and reliability, all components selected to ensure reliable stopping power and optimal driver control.

Our capabilities

Pedal ratio
3.67
Rotors
Free floating ASTM 80-55-06 nodular cast iron
Calipers
4-piston front, 2-piston rear
Master cylinders
Tilton 78-700, 0.700 in bore

Brakes & Pedals

Features

  1. 01

    Outsourced brake lines

    Lines crimped and flared by the tube manufacturer to remove the air and pressure losses of previous years.

  2. 02

    Mechanical bias bar

    Kept over electronic bias for simplicity, to tune for track, tyre and driver.

Changing for 2027

Brake system redesigned and repackaged for 10-inch wheels
Smaller, curved-slot rotors
Rotor geometry chosen through thermal and structural FEA
Electromechanical brake bias adjustment
Brake pressure and rotor temperature sensing
Front wheel and hub of the 2026 car in the Formula SAE Michigan paddock, the sidepod behind it

In the making

How it works

The cause was traced to brake line crimping, so for 2026 the lines were crimped and flared by the manufacturer of the tubes rather than in house.

Bias is set mainly by the 4-piston front, 2-piston rear split, with a mechanical bias bar kept for tuning.

Ductile cast iron was kept for its thermal capacity and predictable wear: a lap simulation put the front rotors at 500 to 550 degrees C, well below where the iron starts to fade. The car locked its brakes at the New Hampshire competition.

WFR26E, car 105, side-on on a stone plaza in front of stone steps, a team member standing behind it

Build the next one.

Recruitment is open. You do not need to be an engineer or know anything about racing. Bring your curiosity and we will teach you the rest.

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