CO2 Car Design and Build

What do real car designers need to consider?

Students are given the (controlled) freedom to design how they would like their dragsters to look and run.

Students will build to their own design within the scope of the specifications.

Students will consider and compromise among aspects of:

• • shape,

  • size,

  • weight,

  • wheel positioning,

  • style,

  • color,

  • additions,

  • surface drag,

  • wheel alignment,

  • line control placement,

  • length

  • and friction....

Teachers and students will have different ways to go about this process....

PRODUCTION SPECIFICATIONS

Dragster Body

A. Dragster body length: 200 mm - 305 mm

B. Dragster body height at rear with wheels: 75 mm

C. Dragster body mass / weight with wheels: 55 g - 80 g

D. Dragster body width at axles – front & back: 35 mm - 42 mm

E. Dragster Body width (including wheels): 90 mm

Axles / Axle Holes / Wheelbase

F. Number of axles: 2

G. Bottom of axle hole above bottom of dragster: 7 mm - 9 mm

H. Front axle hole from front of dragster: 9 mm - 70 mm

I. Rear axle hole from rear of dragster: 9 mm - 70 mm

J. Wheelbase: 105 mm - 270 mm

Spacers / Washers / Clips

K. Spacer washers: 8 max

L. Axle clips or similar: 8 max

Power Plant ( CO2 Cartridge Hole)

M. Depth of hole: 50 mm - 52 mm (2 inches)

N. Housing thickness (around entire housing): 3 mm minimum

O. Housing (diameter): 19.5 mm (3/4″) Use a 3/4″ Drill for best results.

P. Lowest point of chamber diameter to race surface with wheels: 26 mm - 36 mm

Screw Eyes

Q. Screw eye or eyelet inside diameter: 5 mm - 8 mm

R. Screw eyes (2) distance apart at farthest point: 155 mm - 270 mm

Wheels

S. Front diameter: 32 mm - 37 mm

T. Front width at surface contact point: 2 mm - 5 mm

U. Rear diameter: 30 mm - 40 mm

V. Rear at surface contact point: 15 mm - 18 mm