Formerly Pure Stock Class
Car Body / Dimensions
Wheel Base : Any
Height : Not to exceed 3" inches...
Length : Not to exceed 7" inches...
Width : Not to exceed 2-3/4" inches...
Weight : Not to exceed 5.0 ounces (143 grams) measured on 1/10th digital scale
Additional materials maybe added as long as they meet the rules
Other types of materials may be used to construct your own body and/or frame
4 Axles & Wheels must be installed to the side of the car body directly
across from one another / No more than a 45 degree angle
Track Center Rail Height : 1/4" inch ( 7mm ) *
Track Center Rail Width : 1 5/8" inches (4.2 cm) *
* Wheels must clear the outside to outside center rail width measurement
Axles
a. Minimum diameter .084
b. Axles must have a nail head
Wheels
BSA
a. May be CnCed, lathed, polished and/or sanded to true the edge of tread,
surface and circumference
b. The tread / contact surface must remain flat and parallel to the bore as
humanly possible
c. Some of the small detailed ridge marks at the edge of the tread must remain
visible around the entire circumference
d. No Angling, Reshaping, Canting, Round Crowning, Tapering, H-ing, V-ing,
Dishing, the outside of the wheels and/or tread surface
e. No removing or reducing the letters or spokes
f. 7.50mm Minimum Tread Width
g. No drilling additional holes
h. No additional weight reduction is allowed other than hub reducing
i. Wheel covers may be used only if entire wheel is visible
(Wheels will be checked with digital calipers if needed)
The following Modifications are not allowed
a. Starting or finish line devices
b. Electronic or lighting devices
c. Glass or extremely fragile parts
d. Paint that is wet, smudges or extremely sticky
e. Bearings and/or Bushings
f. Sharp objects, sandpaper or abrasives on the bottom of car (We do not want
any damage to the rubber stopping pads)
g. Axles and/or wheels attached to any device that mechanically or alters
rotation and spin
h. Any part of the car to go beyond the starting peg (see photo below)
j. Propellants