View Full Version : Dallas Retro Series

06-03-2013, 05:06 PM
Dallas Slot Cars is proud to announce 2 new classes.

Dallas Can Am Series

Retro Can Am (inline) using a sealed Demon, Evil, or ProSlot Sealed Puppy Dog.

Retro Pro (anglewinder) using a ProSlot Big Dog rebuildable motor with NO seal

8 Saturday races scheduled between July 6 and Dec 21.

July 6
July 27
Aug 10
Sept 7
Sept 28
Oct 26
Nov 30
Dec 21

The Rules

The rules will follow the simplified, racer friendly IRRA LLC rules.

Retro Can Am (Inline)

Chassis- Are to be scratchbuilt from the listed materials or kits. Allowed Materials are Brass in sheet, rod and tube forms. Steel in piano/music wire, pin tube(s). Steel guide holders are allowed but can not exceed a max width of 1\" ( 25.4 mm ) and be no longer than 1 1/2\" ( 38.1 mm ) in length. No other materials allowed in chassis construction.

Chassis are to be inline drive type. Motor shaft must be 90 degrees to the rear axle. No offset motors allowed. The motor shaft is to be on the centerline of the chassis.

Floating pin tubes are allowed. Steel parts cut from Flexi type chassis are not allowed.

Chassis must have a three sided and one piece rear motor bracket with a minimum height of .200\" in the areas between the motor mount and bushing/bearing/tube areas . Bracket width is open. No cut and soldered rear brackets allowed. The motor must be supported by the bracket and the bracket extend to touch the rear axle bushings/bearings/tube(s). The motor must be soldered or screwed to the bracket.

Keyed or Snap type chassis construction is not allowed. Chassis Main Rails of round steel wire or round brass rod/tubing may be ground/sanded a maximum of 20% of the wire diameter and must be ground/sanded on the bottom side of the wire and chassis only. No flat or strip type rails allowed. Chassis Main Rails must connect the front of the chassis to the rear motor bracket. No Pan type or one piece type chassis allowed. The bottom surface of the chassis and motor must be straight and flat in all directions ( front to rear and side to side ) with no sagging or drooping or bowing parts below the chassis main rails. This will be checked with a straight edge ruler.

All hinged movements must be oriented in one and the same direction excluding the drop arm. Shaker pans are allowed. Centerline hinges are not allowed.

Maximum chassis width is 3 1/8\" ( 79.38 mm )

Motor- The only motors for the Can Am class is the Demon, Evil or Sealed Pro-Slot Puppy Dog motor. Puppy Dog motors may be \"reconditioned\" by Pro-Slot or Fast Ones and must be sealed to be allowed. The seal must go over the top of the screw heads. No modifications to the motors or seals are allowed. Racers may change brushes and springs. Only 3 coil replacement springs are allowed and any 36-D sized motor brush may be used. Brushes may not be cut, slotted or modified on the surface touching the commutator. No spring insulation or shunt wires are allowed. If it\'s not mentioned, it\'s not legal.

Body- Any Approved Can Am body may be used. Bodies must be 1969 or earlier models based on the actual full sized cars of that era. Bodies may not be modified from their original molded factory form. Max width of bodies and spoilers are 3 1/4\". No excessive cutting allowed. Front wheel wells must be cut out. Rear wheel wells are to be cut out unless the real car was ran with the rear wheels enclosed. Rear of body may be cut out. Tape to reinforce bodies is allowed.

Bodies must have three numbers and be painted. Bodies may have clear sides and no higher than 1/4\" ( 6.35 mm ) measured from the bottom of the body when mounted on the car. Windshields/windows must be clear or tinted as on the full size car. Must not be able to see the chassis through the body and body must be opaque except for the clear sides and windshield areas or any other area ( air vents ) that was open on the full size car. There is to be a minimum of 1/16\" ( 1.59mm ) vertical front area ( grill, bumper ) on the front of the body. The only exception to this rule is the TI-22 and Porsche 917PA Riverside bodies which had no front vertical area.

Front and Rear tires and/or chassis may not be visible outside the body when looking down on the car/body.

Body interiors must be used. Must be formed and 3-D. No flat interiors allowed. Must be painted a minimum of two colors. Must have driver, helmet, arms, shoulders and steering wheel molded in. The cockpit area must be cut out on the mold lines of the body.

Rear Body Height- Maximum of 1 3/8\" ( 34.93 mm ) measured at the highest point of the body at the rear of the body. Measurement does not include the rear spoiler.

Rear Spoiler- Max height is 1/2\" ( 12.7 mm ). Spoiler must be attached to the rear of the body and not on the top of the body. Rear spoiler can be no wider than the body. No additional air control devices are allowed. No front diaplanes or side dams allowed. Notches and \"punched\" holes are permitted. A maximum of two bends allowed. High mounted wings are not permitted.

Fronts- Minimum Diameter .750\" ( 19.05 mm ). Minimum Width .225\" ( 5.72 mm ) No O-Ring fronts allowed. Must be two pieces a wheel and a foam rubber tire. Foam rubber tire must be glued to the front wheels. Front tire foam must be Black and made from natural, wonder or SBR type rubber. No silicone material(s) allowed. Fronts may be coated with \"super glue\" or finger nail polish. Contact patch must touch the entire track surface. No angle cut or treading allowed. Tire edges may be rounded 1/16\" maximum radius.

Rears- Must be made using Natural Rubber tires only. Fish/Tuna ( treated or untreated ) and Wonder rubber is allowed. No Speed, silicone or synthetic rubber allowed. Maximum rear tire width is .810\" ( 20.57 mm ) and the minimum rear tire diameter is .8125\" ( 20.64 mm ). Rear tires may not be angle cut. Rear tire/wheel width may be narrowed.

Width- Maximum width of chassis and front and rear track is 3 1/8\" ( 79.38 mm ). Axles may not be wider than 3 1/8\" and may not protrude outside the outer wheel edge. Front wheels are not allowed to \"extend\" out past the sides of the body.

Front Clearance- Minimum is .015\" ( 0.38 mm ). Car/chassis is to be checked on a flat block with the front and rear tires supporting the car/chassis without the guide and the most forward part of the chassis will be measured for the minimum .015\" clearance. No tape or other materials are allowed anywhere on the bottom of the chassis.

Rear Clearance- Minimum is .050\" ( 1.27 mm ). Car/chassis is to be checked on a flat block with the front and rear tires supporting the car/chassis without the guide. The motor bracket and all wires, pans, etc must clear by this measurement from the aft side of the motor. The crown gear must also clear by .050\".

Axles- Minimum diameter of 3/32\" ( 2.38 mm ) allowed front and rear. Axles must be solid steel and no hollow or lightweight material axles allowed. Flattened axles are allowed. Threaded front axles allowed.

Bearings/Bushings- Ball Bearings or oilite bushings allowed on front and rear axles and in front wheels.

Weight- Minimum ready to race car weight is 100 grams.

Gears- 48 pitch commercially available pinions and crown gears only. For the Demon/Evil motor must use 8 tooth pinion only. The Puppy Dog must use 7 tooth pinion. Crown gears are limited to 26, 27, 28 and 29. Gears may not be modified with the exception of a sleeve only. No lightening of the plastic or metal gear hub. No sanding of gear O.D. allowed.

Guides- May use and commercially available guide flag. May use any lead wire, guide clips and guide nut.

Retro Pro Can Am (Anglewinder)


Dimensional Specifications

a. Maximum Overall Chassis Width: 3.125\" (measured across any part of the chassis including outer face of wheels)
b. Maximum Rear Tire width: 0.810\"
c. Minimum Rear Tire diameter: 0.790\"
d. Minimum Front Tire width: 0.063\". O-ring tires/fronts allowed.
e. Minimum Front Tire diameter: 5/8\"
f. The bottom face of the chassis, excluding wheels and guide, must be flat when fitted over a test block. Minimum Clearance: 0.050\" (measured under rear axle excluding gear) and 0.050\" ( measured at the lowest, most forward part of the chassis ). Both clearances measured with car standing on a flat tech board on its wheels, without guide. Side pans must clear the same measurements (no \"hanging pans\" allowed).
Chassis construction
a. Chassis type: Any personally-built or commercially-available scratch-built chassis/kit(s) conforming to these specifications and to the spirit of the intent statement is allowed.
b. Chassis Materials: Brass sheet, rod, and tube; steel wire, pin tubing. Steel guide tongues are allowed. Pillow block construction (as in individual sheet-metal axle holders soldered into slots cut in any form of sheet-metal support) is allowed.
c. Drive type: open to the imagination.
d. Hinged movements in any direction are allowed. Centerline hinges (Flexi hinges) are not allowed. No chassis movement, dynamic or induced, may extend the overall chassis width to more than 3.125\". Hinged or fixed side structures cannot \"hang\" below the line formed by the main rails.
e. Front axle: A single straight, one-piece front axle is required, carrying both front wheels. The axle may be fixed or rotating inside a tube. No visual obstruction of any kind across either front or rear wheels must be seen when viewing the car from its sides. No hinged front wheel movements are allowed (i.e. no \"L\" arms). Front wheels may rotate independently. Min Front axle dia 1/16\" .063\"
f. Rear axle: two methods are allowed:
1/ An axle tube of constant diameter capturing the axle bearings. The axle tube may be notched for motor clearance. This axle tube must be held by the steel, bronze or brass-wire main rails or pass through brass upright.
2/ The bearings are set in a one-piece formed sheet brass bracket that may also hold a bolt-on motor bracket soldered to the base of the main rails.
3/ Minimum rear axle diameter 3/32 Solid one piece axles only. No hollow axles allowed.

g. Guide: One guide flag centered on the longitudinal axis of the chassis (i.e. no sideways \"free float\" or offset) is allowed.

h. Any pitch gears allowed.

Body rules
a. Body style: Bodies must be originals or exact reproductions of 1966 to 1973 Pro-Racing bodies by Russkit, MAC, Lancer, Associated, Dynamic, Outisight, etc. No \"flattened\" or \"aerodynamically improved\" bodies allowed (i.e. no molded-in spoilers, wings etc that were not on the original full-size car or original mold). Front wheel arches must be cut out. Rear wheel arches may be left closed if the original full-size car ran with closed wheel arches. Bodies must be presentably painted and carry at least three racing numbers, one on each side, and one on the front. No part of the chassis or tires may be seen when looking on the car from its top.

b. One .500 rear spoiler may be added to the rear of the body. No other air-control devices may be added to the one-piece bodies.

Approved bodies listing:

MAC-V10 Porsche 917PA
MAC-V02 Ti22
MAC-V04 Lola T290
MAC-V05 Ferrari 612
MAC-V06 Ferrari 512M
MAC-V07 Gulf-Mirage
MAC-V08 Porsche 917-30
MAC-V09 McLaren M20
TrueScale Porsche 917
ToyTech March 707
OS-400 BRM (formerly Dynamic Can-Am Porsche)
OS-401 Shadow (formerly Dynamic Lola T260)
OS-404 Honda XR (formerly Lancer Porsche 908)
OS-04 Ti22
OS-419 Retro Porsche 917 PA Can-Am
OS-468 Vintage Kirby 1969 Nissan Can-Am
OS-490 Porsche 917
OS-490 Mirage

Bodies must be molded from material with a minimum thickness of 10 thousands of an inch.

c. Cockpit: Cockpits must be fully opened following the natural line of the windscreen and body. A 3-D driver figure painted in at least 2 colors must be fitted.

Motor Rules

The only motor allowed is the Pro Slot Big Dog rebuildable motor.
a. Set-up - Must use stock P-S mini motor can, endbell, hardware ( Replacement Pro-Slot Copper Hardware is allowed ), and magnets. No modifications to can or endbell EXCEPT for notching the can for axle/chassis clearance as pictured below.

b. Hoods may be SLIGHTLY trimmed for shunt wire clearance. Nothing else may be removed from hardware.

c. Endbell may be drilled to allow for can to endbell screws.

d. Can/endbell oilites may be removed and ball bearings may be used.

e. Brushes and springs - May use any motor brush and/or brush springs. May add shunt wires and spring insulation.

f. Magnets - MUST use the stock PS mini motor magnets. No other magnet may be used. Magnets may be shimmed. Magnets may be epoxied in place. NO honing of magnets allowed.

g. Armature - Must use Pro Slot stock Big Dog only. No other type or brand arms allowed. Minimum arm diameter is .513\". No timing limit. Must be tagged. Minimum stack length is .400\" for Big Dog arms. Racers may work on their motors. No seals required.

h. No other brand/manufacturer arms, set-ups, magnets, parts allowed.

i. Motors changes during the race are allowed.

j. Motor can may be notched for chassis/axle clearance.