Formula Vee - Classic

TYRES

• Bias-ply spec tyre, Front: 15.0 PSI cold, Rear: 15.0 PSI cold. Optimal operating temp: 75–85°C across the tread for peak grip. No tyre blankets (not permitted/applicable — cold set).

ELECTRONICS

• TC: N/A (none fitted). ABS: N/A (none fitted). Engine braking: fixed, non-adjustable. Brake Bias: F 58% / R 42%.

SUSPENSION

• // FRONT
• Spring Perch Offset: 2.0 (turns/position from full soft — set toward low end of range for lowest front attitude while avoiding bottoming on School kerbs)
• ARB Diameter: 0.75 in (19.05mm, stiffest available — maximize front roll resistance since rear has none, sharpens turn-in and controls rear-swing-axle roll indirectly by keeping front flat)
• // REAR
• Spring Perch Offset: 3.0
• Pushrod Offset: 2.0 (slightly higher than minimum to reduce risk of snap oversteer from swing-axle jacking under aggressive trail-braking, while keeping rear low enough for rotation)

KEY SETUP NOTE

• The swing-axle rear has zero inherent roll stiffness, so all balance tuning happens through the front ARB and front Spring Perch Offset — running the stiffest front bar (0.75 in) keeps the front planted and shifts rotation duty to trail-braking technique rather than mechanical rear grip, which is critical given how easily the swing axle jacks and snaps into oversteer at Lime Rock's off-camber Uphill Esses and West Bend under aggressive load.

TRACK GUIDE

• Turn 1 (Big Bend): Late-brake deep on entry, but be progressive off the brake pedal — swing axle punishes trail-braking with sudden oversteer; get to full throttle by apex to settle the rear.
• Uphill Esses: Minimum steering input, carry momentum — this is a rhythm section where smoothness beats aggression; any mid-corner lift unsettles the rear axle geometry.
• West Bend: This is where lap time is won or lost — a committed, single-input entry with earliest possible throttle application matters more than outright entry speed due to the low-power engine's need for corner-exit momentum.
• No-Name Straight into Righthander: Late apex the final corner to maximize acceleration onto the front straight — with only 69hp, exit speed compounds over the full straight length.
• Kerb usage: Use kerbs aggressively at Big Bend exit and West Bend, but only with wheels loaded (never mid-transition) — the swing axle's camber change over kerbs at the wrong moment causes instant snap oversteer.