Deep End — The First 90 Days at Pennine Drive Systems

A four-round, advanced strategic-leadership simulation set inside Pennine Drive Systems Ltd, a Sheffield-based £210M precision-gearbox manufacturer betting its future on an electric-drivetrain transition. You are the newly appointed Managing Director of the 220-person Drivetrain Division, dropped into the deep end in your first week: the division's anchor customer — a European rail OEM worth £34M over three years — has issued a 90-day 'cure notice' demanding a qualified production unit or the contract is cancelled, and the board has set a 90-day review of your strategic plan on the same clock. The division has already burned £26M and missed two launch milestones; engagement sits at 58/100, three senior engineers (combined replacement cost £0.9M) are flight risks, and you can spend only £3.5M before triggering a group capital review, while the full 'do-everything' plan costs £6.2M — so you must choose. The simulation operationalises Narendra Laljani's research on strategic-leader capability (the visionary–managerial typology) and stretch experiences as the engine of leader development. Round 1 you diagnose the twice-missed launch and set a one-line strategic intent with a 90-day must-win and a stop-list. Round 2 you choose a crisis posture — a visionary reframe versus a managerial sprint, the answer being a disciplined sprint held inside a clear direction — and allocate the £3.5M recovery budget across engineering, testing and the missing external power-electronics expertise. Round 3 you make the stretch assignment: the proven deputy (safe, no development) or the high-potential engineer (visionary, unproven), and design the scaffold — authority, mentoring, escalation, day-job cover and a halfway fallback — that turns a stretch into development rather than a drowning. Round 4, at day 60 with a subsystem slipping and a flight-risk engineer resigning, you recover delivery within budget, coach the stretch leader through the setback without rescuing them, make a retention move, and present a board read that links 90-day delivery to the long-term transition. The math rewards leaders who hold visionary intent AND managerial delivery together, stretch the high-potential WITH a scaffold, coach rather than rescue, and build confidence on credible commitments — and it punishes the five classic errors: vision without delivery, delivery without direction, never stretching, stretching without scaffolding, and over-promising to everyone at once. Final KPIs track Strategy Clarity, Execution Rate, Talent Readiness and Stakeholder Confidence.