Loading Events

« All Events

2024 IROC Challenger Series II

2024 IROC Challenger Series II

Saturday, March 2, 2024 @ Nova Ridge

(9am – 2pm)

The IROC Challenger Series for both constructors and pilots returns to Nova Ridge Motorsports Park for Round 2 on March 2, 2024.

Bring (or provide by proxy) your previously purchased and currently working 312P model and you can participate and race all of the models present in true IROC fashion by rotating through the lanes (and models) in Race 2.

For our ongoing discussion about this series visit our forum topic here.

R32 support races will compliment our Scratch32 IROC feature race.


  • 1960-1965 1.5L Grand Prix (15LGP)
  • Trans Am (TA)
  • IROC Challenger Series II (CSI) – Qualifying
  • IROC Challenger Series II (CSI) – Race
  • CANAM (CA)
  • 1950’s Endurance Sportscar (50SP)

For R32 class criteria please visit the R32 sub-forum here.


  • Doors Open @ 9am – Timed Practice
  • Green Flag @ 9:30am
  • Classes will be raced in the order listed above
  • Checkered Flag @ approx. 2pm


  • European rotation. Finish result will seed subsequent race rotation position
  • 3 minute heats (180 seconds) x 4 (lanes) for a total of 12 minutes per race
  • 3 or more marshals for every heat (if numbers permit)
  • Race to line result will determine finishing order


Make sure your controller is in tip top shape and that your brakes function reliably! All R32 tracks require the use of three pole positive polarity controllers. Banana plugs are highly recommended but alligator clip hookups work just as well.


Please note that as per our R32 class criteria ALL rear tires must be DArt brand Club Series Urethane Tires, without exception. Front tires may be either stock or DArt Club Series Urethane Tires. If you need DArt Club Series Urethane Tires you can order them here or email DArt here.


Please park anywhere outside the main entrance/lobby. If the main entrance (or the stairs or elevator) are locked please call or text me at (437) 247-6587.


If you do not have a Scratch32 user account but are interested in joining us to race or if you need the event address and/or suite number please email me here.

See ya’ll then!

Class Criteria

1960-1965 1.5L Grand Prix


  • Eligible Models: Any provided the model represents a Grand Prix car which competed between 1960 and 1965. Cars produced in or prior to 1962 constitute Group 1 cars and cars produced thereafter constitute Group 2 cars
  • Motor: BWA BWMS050
  • Wheels – Not exceed 14mm in diameter AND:
    • Group 1 wheels must be no more than 6mm wide
    • Group 2 wheels must be no more than 7mm wide
  • Tires:
    • Rear – Any DArt Club Series Urethane Tire
    • Front – Any Stock or DArt Club Series Urethane Tire
  • Overall maximum width of 50.8mm

Trans Am (TA)


  • Eligible Models: Sidewinder Scalextric and Pioneer Trans Am models
  • Motor: ‘Stock’ Pioneer or Scalextric (with 11×36 gearing)
  • Rear Tires: DArt Club Series (SC0801 Urethane Tires recommended)
  • Front Tires: Stock or any DArt Club Series (SC0801F Urethane Tires recommended)
  • Minimum overall weight of 85g
  • Optional modifications:
    1. Guide – may be replaced by any 1:32 guide together with any guide adapter
    2. Wheels – front and back may be replaced by any 14mm aluminium wheel. Inserts are to be period correct and resemble original car
    3. Axles – may be replaced with solid axles (front & rear) or hollow axle (front) to facilitate ‘free spinning’)
    4. Bushings – rear nylon/plastic bushings may be replaced with bronze/oilite bushings
    5. Gearing – any 36T spur gear may be used together with any manufacturer 11T pinion

IROC Challenger Series II (CSI)


  • Eligible Model: 1969 DArt Ferrari 312P as provided; and
  • Mandatory Parts: DArt wheels, inserts & Club Series marked urethane tires as provided in the IROC kit;



  • Eligible Models: Any hard body provided the model represents a Can Am car which ran at two sanctioned CAN AM races at different tracks in any year between 1966 through 1974. Coupes are excluded
  • Rear Wheels: minimum 14mm in diameter
  • Rear Tires: Any DArt Club Series Urethane Tire (NC0101 or D11 recommended)
  • Front Tires: Stock or any DArt Club Series

1950’s Endurance Sportscar (50SP)


  • Eligible Models or Hard Bodies: Any 1950’s era Sportscar (production or prototype) that competed in an endurance race between 1950 and 1959 lasting at minimum 6 hours, 1000 kilometers or over multiple stages spanning several days;
  • Low Power Motor: BWA BWNC1, Ninco NC1, Ninco NC8, BWA BWMS050 or Vanski FF050;
  • Front and Rear Tires: Any DArt Club Series Urethane Tires;
  • Maximum width of body not to exceed 57mm;
  • Minimum overall weight of 75g.

Nova Ridge Motorsports Park

March 2 @ 9:00 am 2:00 pm

For Scratch32 Participants

Nova Ridge Motorsports Park

Mississauga, Ontario Canada
View Venue Website