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Rubber Band Propulsion Set-up
parts and supplies | item number: SUPP901DF

Rubber Band Propulsion Set-up

Online Price: $4.95

Availability: This item is currently in stock

bulk order special available for this item

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This is most advanced and efficient rubber band propulsion system ever designed for propelling a rubber band powered vehicle. The secret behind Doc Fizzix's top secret propulsion system is the advanced pulley system that allows a rubber band to be stretched to it's maximum capacity for maximum potential energy. The trouble with almost all other rubber band propulsion systems is that the rubber band is twisted or wound in order to store energy, the Doc Fizzix's rubber band propulsion system stretches the rubber band and this provides a more uniform transfer of potential energy and also maximizes the total amount of energy available. This set-up includes the low inertia 1-inch pulley, kevlar string, pulley axle, and instructions.


  • maximizes starting energy
  • uses Doc Fizzix's pulley system
  • designed for all rubber band racers


All and any rubber band racers. Will work with all speed and distance racers. The best propulsion system available for rubber band racers.

Includes the following:

  • 1x pulley
  • 2x rubber bands
  • kevlar string
  • 6-inch pulley axle
  • Doc Fizzix's easy-wind, snag-free propulsion system
  • Step-by-step plans with performance tips and tricks

Tools required:

  • Super glue
Size : pulley diameter = 1 inch, axle length = 6 inches.

Weight : 0.9 oz.

mouse trap car mouse trap car mouse trap car *Kits require assembly, actual results will vary, glue and tools not included.

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Phone Hours: Mon. - Fri. 10:00 a.m. - 5:00 p.m. (CST) - 866-362-3499 (US only) or 512-218-0454
Doc Fizzix Products, P.O. Box 34, Spicewood TX 78669, U.S.A.