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Doc Fizzix - DFXX1714 DFX1714 1714 614121117143 0614121117143
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Doc Fizzix Basic Kit II Mousetrap Racer
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Doc Fizzix Basic Kit II Mousetrap Racer
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Tech Notes
Designed for both speed and distance, this is the Basic Kit II
Mousetrap Powered Racer Kit from Doc Fizzix.
The Basic Kit II has all the features of the Basic Kit but adds
adjustable steering and reduced friction bushings.


Easy-to-wind and snag-free string release system eliminates tangles
and snags for increased performance
Pre-cut and drilled balsa wood frame
Uses lightweight low inertia DVD/CD layers for wheels
Travels distances from 35 to 65 meters (82 to 147 feet)
Reduced friction bushings increase the model's efficiency
Adjustable steering allows the model to travel in complete circles of
almost any radius (can also be set to travel in a straight line)
Can be assembled in less than 30 minutes for most first time builders


Two Long Pre-Drilled Balsa Wood Side Rails (15-1/2" x 1-1/2")
Two Short Pre-Drilled Balsa Wood Side Rails (2-1/2" x 1-1/2")
One Long Balsa Wood Deck Top (7" x 3")
One Short Balsa Wood Deck Top (2-1/2" x 3")
One Balsa Wood Swivel Support (1-1/2" x 2-1/2")
One Brass Tubing Lever Arm (12" x 1/8")
Two Brass Tube Axles (6" x 3/16")
Eight Rubber DVD/CD Spacers
Four DVD Wheels
Four Metal Thrust Washers
One Zip Lock Axle Hook
One 36" long piece of Kevlar String
One Victor Brand Mouse Trap
One Plastic Bolt and Nut
One Top Secret Construction Guide and Performance Tips Sheet


CA Glue and Needle Nose Pliers


Length: 21" (533mm)
Width: 6" (152mm)
Lever Arm Length: 12" (305mm)


What is a mousetrap powered car and how does it work?
A mousetrap-powered racer is a vehicle that is powered by the energy
of a wound up mousetrap's string. The most basic design is a follows
One end of a string is tied to the tip of a lever arm that is
attached to the mousetrap's "snapper arm". The other end of the
string has a loop that is designed to catch a hook attached to a
drive axle. Once the loop is placed over the axle hook, the string
is wound around the drive axle by turning the wheels in the oposite
direction to the vehicle's intended motion. As the string is wound
around the axle, the snapper's lever arm is pulled closer to the
drive axle causing the mousetrap's spring to wind up & store energy.
When the drive wheels are released, the string is pulled off the
drive axle by the mousetrap causing the wheels to rotate.

– If you need more information, use these Doc Fizzix resources –
Phone: 773-586-8503   Postal Address:
Doc Fizzix
6917 WEST 59TH ST

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