Racing Rules for Derby Cars Made from LEGO® Bricks Rules for racing derby cars made from LEGO® bricks by Joe Gargiulo, Pinewood Pro Rules for racing derby cars made from LEGO® bricks down a Pinewood Derby track that were built with the PRO Brick Wheel Assembly or PRO Brick Chassis. These rules are designed to encourage creativity and experimentation. Car Weight Maximum car weight shall not exceed 5.0 oz. The 2x2 Zinc Brick (0.44 oz) is the best weight for derby cars made from LEGO® bricks because it can simply be snapped on like any LEGO® brick. For open class racing, the weight limit is at the discretion of the Race Manager. 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. Derby Axles and Wheels PRO Brick Wheel Assembly or PRO Brick Chassis must be used to get precise wheel spacing for a Pinewood Derby track. 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. Only oil type lubricants, such as Pinewood Pro's NyOil, may be used on the axles before the car car is entered into the race. You may not add lubrication once the car is submitted. IMPORTANT! Do not attempt to use graphite on your axles because graphite will migrate to the LEGO® bricks and the parts will not longer stick together. 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 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 Brick 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. Derby cars made from LEGO® bricks at Pinewood Derby track starting gate LEGO® is a registered trademark of LEGO Juris A/S. The LEGO Group does not endorse or sponsor Pinewood Pro or its products, and is not affiliated in any way with Pinewood Pro.