Extended Flex Pinewood Derby Car Design

MAXIMUM VELOCITY!^®

Extended Flex
Pinewood Derby Car Design

THE FLEX¹ has to be the most unique design I have encountered. The body cuts allow each wheel to be independent of the other wheels. This independent suspension provides an advantage on tracks with a rough surface, and on tracks with joints that do not exactly match. On smooth tracks, the FLEX will perform as well as any other car.

In addition to the car kit and basic hand tools, you will need the following supplies to build THE FLEX:

5/32" drill bit

Coping Saw

Container to hold weight (I used a Duplo block with a plastic cover under the bottom)

Lead: 3-3/4 ounces of lead or tungsten, including the weight container (I used tungsten disks)

Stainless steel table knife or equivalent

8" diameter or larger sauce pan

Spyder decal sheet was used to customize the car in the photo

The extended wheel base can be created by either cutting new axle slots with two hacksaw blades, or by drilling axle holes with the Pro-Body Tool. Instructions and templates are provided in the Advanced Car Plans 2 booklet.

¹Adapted from an original design by Chuck Borough. Visit www.goaskgrandpa.com/sample01.htm for more information and pictures. The design is used by permission.

Customer Submitted Photos of the FLEX
Robby Roper - 2006 Brian White - 2007