Early formula car suspension parts are a niche but critical area for anyone restoring or maintaining a vintage open-wheel race car. Whether you own a Formula Ford, Formula Vee, or a 1960s Formula One car, the suspension system defines handling, safety, and performance. This guide covers the components you need to know, challenges in sourcing parts, and how to choose between original reproductions and modern upgrades.
Shop on Amazon
Browse the latest options and prices.
Universal Rubber Bump Stop Kit - 2 Pack with Nuts, Suspension Shock Absorber for Cars, Trucks, Vans
Understanding Early Formula Car Suspension Systems
Early formula cars used relatively simple suspension designs compared to today’s multi-link, push-rod activated setups. Most used double wishbone arrangements at the front and a live axle or de Dion tube at the rear, with coil springs and telescopic dampers. Key components include:
Wishbones and Control Arms
Wishbones (A-arms) connect the chassis to the upright or hub carrier. Early cars often used unequal-length wishbones to control camber change through travel. Materials were typically steel tubing, sometimes with threaded rod ends for adjustment.
Uprights and Hub Carriers
These hold the wheel bearings and provide attachment points for the wishbones, steering arm, and brake caliper. Early uprights were cast or fabricated steel, heavy but durable.
Springs and Dampers
Coil springs were common, often paired with lever-arm or telescopic dampers. Early dampers had limited adjustability, but many restorers now fit modern gas-charged units internally that fit original housings.
Anti-Roll Bars
Sway bars help reduce body roll. In early formula cars, they were often simple steel bars with drop links connected to the lower wishbones. Many aftermarket options exist to upgrade stiffness.
Common Challenges with Vintage Suspension Parts
Sourcing parts for early formula cars presents unique difficulties due to age, limited production runs, and evolving regulations.
Wear and Tear
Fifty-year-old ball joints, bushings, and heim joints are often worn out or corroded. Original rubber bushings harden and crack, affecting geometry precision. Always inspect every pivot point before recommissioning.
Corrosion and Fatigue
Steel components may have surface rust or stress cracks from racing use. Aluminum uprights can suffer from galvanic corrosion if not properly insulated from steel components. Non-destructive testing (like magnetic particle inspection) is recommended for critical parts.
Obsolescence
Many OEM suppliers have long since stopped producing parts for vintage formula cars. You may need to hunt NOS (new old stock) on enthusiast forums, swap meets, or specialty retailers. Reproduction parts are available for popular models like Lotus 61 or Merlyn MK20.
Sourcing Restoration Parts vs. Modern Upgrades
When rebuilding an early formula car suspension, you face a choice: keep it original for authenticity or upgrade for performance and safety.
OEM Reproduction Parts
Several companies now manufacture exact copies of original suspension components for classic formula cars. These use modern materials (e.g., Teflon-lined bushings) but maintain original geometry. Pros: correct fit, period-correct appearance. Cons: may be expensive, limited availability.
Aftermarket Performance Upgrades
Many racers opt for adjustable coilover shocks, 6061 aluminum uprights, and spherical bearings to reduce weight and improve handling. For example, swapping out lever-arm dampers for a modern internal shock system can improve damping consistency. However, this may require modifications to the chassis pickup points and affect eligibility for historic racing classes. Always check your series regulations before making changes.
Materials and Construction: Then vs. Now
Steel
Original parts were mostly mild steel, heavy but easy to weld and repair. Today, chromoly steel (4130) is common for wishbones—stronger, lighter, but requires careful heat treatment after welding.
Aluminum
Some early cars used aluminum for uprights and hub carriers to reduce unsprung weight. Modern CNC-machined 7075 aluminum offers superior strength and fatigue life. But mixing aluminum and steel without proper isolation can cause corrosion.
Composites
Carbon fiber suspension arms exist for high-end historic race cars, but they are costly and require specialized inspection. For most early formula cars, steel or aluminum remains practical.
Tips for Selecting the Right Parts for Your Early Formula Car
Verify Fitment and Specifications
Always measure critical dimensions: bushing inner/outer diameter, bolt hole spacing, thread pitch on ball joints, and overall length of control arms. One millimeter can change the camber curve. Cross-reference with original workshop manuals or parts diagrams.
Consult with Specialists and Enthusiast Communities
Join clubs like the Vintage Formula Car Association or online forums dedicated to your specific car model. Experienced owners can tell you which parts crack, which upgrades work, and where to source rare components. Many specialty shops, such as Pegasus Auto Racing Supplies or Speedway Motors, stock parts for popular vintage formula cars.
Don’t Neglect Fasteners and Hardware
Suspension bolts should be high-grade (usually Grade 8 or higher) and preferably new. Use nylon locking nuts or safety wire on critical joints. Torque to factory specs or a reliable aftermarket reference.
Practical Recommendations for Your Early Formula Car Suspension
For a street-driven or show car, original-style reproduction parts give the best balance of authenticity and reliability. For track use, especially if you compete, invest in modern dampers, spherical bearings, and a careful geometry setup. Always prioritize safety: inspect every part, replace any that show signs of fatigue, and have a professional check your work. Restoring an early formula car is a labor of love—the suspension is where engineering meets artistry. Take your time, source quality parts, and enjoy the process of bringing a piece of racing history back to life.