D3 2008   Retro NASCAR   Regulations

The D3 Committee invites all other affiliates to submit their own racing calendar for    publication herein. Publication of the rules shown below in other Forums is permitted  by Slotblog! if unaltered, unless with approval of the relevant D3 Committee members.

D3 2007 1/24 Retro NASCAR racing class rules (version V1, 12-23-06)

1. Intent:

The intention of this class is to provide a class of scratch-built slot cars reflecting the spirit of the late 1960's racing era, with scale realism and low cost, to attract new and experienced racers and builders.

2. Dimensional Specifications

2a. Maximum Overall Chassis Width: 3" (measured across any part of the chassis)
2b.
2c. Wheelbase must match approved bodies, I.E. 4.5".
2d. Minimum Rear Tire diameter: 0.8125" (13/16").
2e. Minimum Front Tire width: .0225" (O-rings NOT allowed). Minimum Front Tire diameter: 0.75" (3/4")
2f. Minimum Clearance: 0.050" (measured under rear axle including gear) and 0.015" (measured under front axle). Both clearances measured with car standing on a flat tech board on its wheels, without guide.

3. Chassis construction:

3a. Chassis type: Any personally-built or commercially available scratch-built chassis conforming to these specifications and to the spirit of the intent statement is allowed.
3b. Chassis Materials: Brass sheet, rod and tube, steel wire, pin tubing and guide tongues are allowed. Other than guide tongues, stamped steel parts and EDM or laser-cut parts of any material are not allowed unless submitted for approval.
3c. Drive type: the motor must be mounted in sidewinder fashion not to exceed 10 degrees from axle.
3d. Other than a drop arm, all hinged movements must be oriented in only one direction (i.e. either side pan hinges OR a plumber hinge, NOT BOTH, meaning that a "loose" hinge may not provide movement in more than one direction). Centerline hinges (flexi hinges) are not allowed. No chassis movement, dynamic or induced, may extend the overall chassis width to more than 3".
3e. Front axle: A single straight, round  3/32" minimum-diameter one-piece front axle is required, carrying both front wheels. The axle may be fixed or in a tube. No visual obstruction of any kind across either front or rear wheels must be seen when viewing the car from its sides.  Small flats can be ground only for setscrew location. NO hinged front wheel movements are allowed (i.e. no "L" arms). Front wheels may rotate independently.
3f. Guide: One guide flag centered on the longitudinal axis of the chassis (i.e. no sideways "free float" or offset) is allowed.
3g: No on-board automatic liquid dispenser of any kind is allowed.

4. Motor rule:

4a. Motor type: Unopened, unmodified TSR D3 and Falcon VII  motor.
4e. Exclusion Clause: Clear violation of motor-tampering rule will result in permanent exclusion from any Division III participation in any form.

Example of car for this class:





5. Body rules

5a. Body style: vintage NASCAR by Lancer. Approved body list:
Bodies must be molded from material with a minimum thickness of 10 thousands of an inch.
LAN-900 Dodge Charger
LAN-904 Ford Torino
LAN-906 Mercury Cyclone
LAN-908 Plymouth Road-Runner
MAC-V12 Mercury Cyclone
Other bodies must be submitted to The Division III Committee members for approval. The use of any Dodge Daytona or Plymouth Superbird bodies is strictly forbidden.

Front and rear wheel arches must be cut out. Bodies must be presentably painted and carry at least three racing numbers, one on each side, and one (large one) on the roof, as in standard NASCAR practice. No part of the chassis may be seen when looking on the car from its top.
5b. Spoilers and air control: not allowed.
5c. Cockpit: All bodies must carry a separate, painted (at least two colors), three-dimensional interior comprising a driver (helmet, shoulders. and arms) a steering wheel and cockpit representation.

Any matter regarding this class must be submitted in writing to Division III Committee member Jeff Easterly

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