2011 ISRA/USA North American Scale Championships Rulebook - Part 2

[Casey Scott]

Nothing may be added to the chassis if not mentioned in the list below:
Lead may be taped or glued to the chassis.
Pin tubes may be added in the original body mounting holes and can be floating or fixed to the chassis.
Rear bushings may be soldered to the chassis (no ball bearings).
Motor may be soldered to the chassis (screws are optional).
Chassis may be braced with no more than 3" of up to .062" diameter piano wire.
May add commercially available guide tongue reinforcement.
Tape may be applied.
Lead wire retainer may be added.

Body

JK- Porsche (7178), Audi R8C (7182), Bentley (7197), Mercedes CLR (7183)
Parma- Mercedes CLK (1019), Porsche 911 GT-1 (1001), Porsche GT-1 (1045), Mercedes GT-1 (1044)
Outisight- Porsche GT-1 (082), Audi R8C (285), Bentley EXP (286), Porcshe Evo (287)
Redfox- Bentley (RFSC26), Porsche (RFSC28), Audi R8 (RFSC34)
G-Force- Porsche (006), Audi(007)

Motor

Any C-can based motor with any single piece, full height ceramic C-Can magnet.
Any commercially available Superwasp, Stinger, Hornet, Sportsman, Contender, Challenger, or
Competitor armature with a minimum diameter of.510”. No maximum armature limit
Aftermarket aluminum endbells are specifically legal.
Can and endbell ball bearings are legal.
Shunt wire and spring insulation is legal.
May epoxy or super glue magnets in place.
May interchange manufacturer parts.
May notch cans and/or magnet for axle clearance.
May drill 1 small hole per side to ease magnet installation.

JRL
3 minute heats

Chassis

Mossetti, FX, Clark, Mack F1, HNR, Parma Flexi 1 853 (may substitute Flexi 2 center 595B, JK JRL Indy
car/ F1 chassis 2690 and 2692, JK Cheetah 2511, JK Cheetah 7 F1 chassis, Champion Turbo Flex,
Champion Astro Flex with narrow pans.
JRL top suspension piece may be bent to ease body mounting.
Stamped steel chassis may add any type of piano wire bracing.
Pin tubes may be added.
Must utilize bushings only. Ball bearings are not allowed.
Pan movements may be increased or restricted.
Front wheels must be at least .600 inches in diameter and at least .300 inches wide.
No other modifications will be allowed.

Body

Any 1/24 scale Indy/F1 production body.
Body must have a 3 color driver
Chassis must be completely covered when viewed from above; except for the front wheel assembly and
rear wheels, axles, tires, and gear.

Motor

Any C-can based motor with any single piece, full height ceramic C-Can magnet.
Any commercially available Superwasp, Stinger, Hornet, Sportsman, Contender, Challenger, or
Competitor armature with a minimum diameter of.510”. No maximum armature diameter limit.
Aftermarket aluminum endbells are specifically legal.
Can and endbell ball bearings are legal.
Shunt wire and spring insulation is legal.
May epoxy or super glue magnets in place.
May interchange manufacturer parts.
May notch cans and/or magnet for axle clearance.
May drill 1 small hole per side to ease magnet installation.

Open Group 12
4 minute heats

Chassis

Unrestricted
Axle ball bearings are legal

Body

JK - Cadillac 7185, BMW LMR 7184, Courage 7195, Ascari 7200, Lister 7202, Porsche RS Spyder 7203,
Lola B05 7204, Mazda Courage 7205, Audi R10 7206
Parma - Porsche K8 941, MG Lola 1083, Dome 1048
Outisight - BMW 065, Cadillac 289
Red Fox – Caddy (RFSC32), Audi R-10 (RFSC33), Acura (RFSC40)
G-Force- prophet gf002
Note maximum rear spoiler height of 1.750” as measured on a recessed tech block.

Motor

Any C-can based motor with any single piece, full height ceramic C-Can magnet.
Any commercially available tagged X-12 armature with a minimum diameter of.510”. No maximum
armature diameter.
Aftermarket aluminum endbells are specifically legal.
Can and endbell ball bearings are legal.
Shunt wire and spring insulation is legal.
May epoxy or super glue magnets in place.
May interchange manufacturer parts.
May notch cans and/or magnet for axle clearance.
May drill 1 small hole per side to ease magnet installation.

1/32nd Eurosport
4 minute heats

Chassis

Max length; center of rear axle and guide pivot hole is 105.0mm.

Body

Eurosport 1/32 is a single body class.
Red Fox (Brasil) ISRA Audi R10.
Maximum height at rear wing is 32.5mm as measured on a recessed tech block.
The body must not deviate from its shape as produced by the manufacturer.
The body must cover the entire chassis, including the rear axle and guide flag, in at least one unforced
position. It can be fixed to the chassis with pins or cellophane.
Body decoration is unrestricted, but must be made in at least two different colors. The body must be
completely opaque. Windows must be left clear and all four wheels must be completely visible when
viewed from the side.
No portion of the chassis must be seen through the cockpit area when viewed from above.
Body cutting must maintain every detail of the real car (i.e. lights, wheel position, etc.).
Wheels and axles
Max rear tire width is 16.0mm.
Min rear tire diameter is 15.0mm.

Motor

No restrictions.

F-1 1/32 Eurosport
4 minute heats

Chassis

Chassis are unrestricted except for the following limitations:
The motor must be mounted in the chassis in the “in-line” position (i.e. in a 90-degrees angle to the rear
axle).
The chassis must have a maximum length of 110 mm (4.330 inches) as measured from the center of the
guide pivot to the center of the rear axle.
The chassis portion of the car must have a maximum width of 52 mm (2.047 inches). This portion (the
“pans”), must have a maximum length of 68 mm (2.677 inches).
The part of the chassis ahead of the pans must have a maximum width of 34 mm (1.340 inches),
excluding the front axle and its support(s).
The part of the chassis to the rear of the pans, including the supports for the rear axle, must also have a
maximum width of 34 mm (1.340 inches).
Only one guide flag device per car is allowed.

Body

Betta: BAR Honda V10 2004, Betta Williams BMW 2004, Betta Renault 2006
Bolid: BMW Williams
BPA: Ferrari (#040), Jordan 199 (#031), Williams WF23/BMW (#039), Mclaren MP 4-17 (#045), Jaguar R
4 (#048), BAR Honda (#056), Toyota TF105 (#064)
RED FOX: F1/GP Mclaren 2003, F1 McLaren 2005, F1 McLaren 2006, F1/GP Ferrari 200
CAT: Cat Vacs RB08
The body must not deviate from its form as produced by the manufacturer.
The paint scheme must represent an actual F1 team’s car during the last 10 years.
The major engine cover and side pod sponsors logo/name must be present.
The body must cover the entire chassis including the guide flag but excluding the axles, wheels and the
support(s) for the front axle.
The body must be completely opaque. The additional exception is the rearward portion of the chassis
pans not covered by the body. The chassis portion in this area must be painted black.
Numbers must be displayed in at least three (3) different positions.
All cars must contain a painted and scaled three-dimensional interior with driver’s helmet, shoulders,
arms, and steering wheel mounted in the original cockpit position.
No portion of the chassis must be seen through the driver area when viewed from above.
Pin striping and/or bodyline detailing is mandatory.

Motor

No restrictions.

Front wheels

Minimum diameter of .550 inches (14 mm)
Minimum width of .157 inches (4 mm) to a maximum width of .400
inches (10 mm).
Minimum front wheel track (width) must be 2.44 inches (62 mm).
Wheels must turn on their center at 90 degrees to the track surface and have a black rubber/plastic
perimeter.
The loss of a front wheel during the course of racing will be considered an infraction and must be
repaired/replaced immediately.

Rear tires

Minimum diameter of .590 inches (15 mm) and a maximum width of .630 inches (16 mm).

1/24th Eurosport
4 minute heats

Chassis

Unrestricted

Body

All B-Production and Open-12 bodies are legal with the exception of the Red Fox Audi R-10 (RFSC33) Red
Fox and Acura (RFSC40).
Red Fox ISRA R-10 with a maximum rear spoiler higher of 35mm (1.378 inches) as measured on a
recessed tech block.

Motor

No restrictions

The rulebook in pdf format is attached below!