LEGO® Derby Rules

LEGO® Derby Racing Rules
by Joe Gargiulo, Pinewood Pro
Presented below are the LEGO Derby Rules for racing LEGO Derby cars down a pinewood derby track that were built with the
Car Weight
- Maximum car weight shall not exceed 5.0 oz
- The 2x2
Zinc Brick (.44oz) is the best weight for LEGO Derby cars because it can simply be snapped on like any LEGO part - For open class racing, the weight limit is at the disgression of the Race Manager
LEGO Derby Car Dimensions
- Max Height: 4.5" - so the car clears the finish gate.
- Max Width: 3" - so the car does not interfere with the car in the adjacent lane
- Max Length: 10" - so the car fits behind the start gate
- Bottom clearance: 3/8" - so the car doesn't rub on the track center guide rail.
LEGO Derby Axles and Wheels
- PRO Brick Wheel Assembly or LEGO Derby Chassis must be used to get precise wheel spacing.
- All four wheels do not need to be in contact with the track; however, each car must have four wheels.
Lubrication
Lubrication is not allowed.
Car Modifications Not Allowed
- Wheel bearings, washers or bushings are prohibited.
- The car must not ride on any type of springs.
- So called "cheater bars" at the front of the car to give an unfair starting advantage are prohibited.
- No starting or propulsion devices.
- The car must be freewheeling.
Other LEGO Derby Race Rules
- Each car must pass inspection by the official inspection committee before it will be allowed to compete.
- Any modifications not expressly forbidden by any of the rules above, are allowed, subject to final decision by a race official.
- The Inspection Committee may disqualify any car that does not meet the above specifications.
Car Repairs
- If pieces fall off the car, (common in LEGO Derby car races!), the racer will have 5 minutes to put pieces back on the car.
- No additional pieces may be added when the car is repaired.

LEGO derby cars on Pinewood Derby track