Antonelli's New Clutch: How a Paddle Tweak Fixed His Starts

The Starting Problem

Kimi Antonelli roared into Montreal as the Formula 2 championship leader, but his race launches had become a glaring weakness. In the opening rounds, wheelspin and inconsistent clutch bite points cost him positions off the line. The Prema Racing driver, a Mercedes F1 junior, needed a fix ahead of a critical weekend.

Montreal's smooth tarmac and the long drag to Turn 1 punish any hesitation. Antonelli and his engineers zeroed in on the physical interface: the clutch paddle.

Diagnosing the Flaw

• 3 of the first 4 feature races saw him lose at least one position at the start
• Data showed a 0.26s average reaction time, well off the benchmark
• The original paddle had limited feel for the bite point, causing abrupt releases

The Technical Solution

In Montreal, Prema bolted on a new clutch paddle design. The part featured a shorter throw and reprofiled finger ridges for more precise control.

The paddle’s leverage ratio was altered to give Antonelli finer modulation during the clutch engagement phase. Hydraulic mapping was also updated to match the hardware changes.

"We analyzed data from the first four rounds and saw that the initial paddle wasn't giving him the consistency he needed. This is a bespoke unit for Kimi.” — A source within Prema Racing

Key Paddle Updates

• Shorter paddle stroke for faster full release
• Redesigned ridges to reduce finger slip under high stress
• Recalibrated clutch hydraulics to match the new mechanical profile

Immediate Impact

Qualifying delivered pole position by two tenths. But the real test came when the lights went out. Antonelli’s launch was crisp—no wheelspin, no bogging down. He shot into the lead before Turn 1 and controlled the feature race, winning by over 5 seconds.

Reaction time data from the team showed a leap down to 0.22s, matching the best in the field. The new paddle gave him the confidence to release the clutch aggressively without risking a stall or excessive spin.

By the Numbers

• 0.22s reaction time in Montreal vs season average 0.26s
• 0 positions lost at the start for the first time in three rounds
• 32-point championship lead after the weekend

Title Fight Ramifications

Antonelli’s championship cushion expanded to 32 points, but rivals like Zane Maloney and Victor Martins are relentless. A single mechanical tweak has shifted the narrative around his Achilles' heel. Other teams will now scrutinize paddle designs, but Prema’s swift innovation gives Antonelli a mental edge.

The next standing start comes in Barcelona—a circuit where the run to Turn 1 can define strategy. With the clutch paddle sorted, Antonelli can focus on dictating the race from the front, rather than recovering from another poor getaway.