Class Rules

Group A

1) Vintage

2) Stock Cars

3) Slot It Classics

4) Slot It Group C

5) Thunderslot

6) Legends

Group B

1) Classic Sports Racers

2) Trans Am

3) GT

4) Formula I

5) Modified Sports Prototype

6) NSR Classics

IMAR CLASS RULES 2024/2024 Season


Iowa Model Auto Racers - I.M.A.R. CLASS RULES

2024 Season



Remember: If the rules do not say you can change something,

then you aren’t allowed to – thanks!



Note: Tires may always be changed (no foam)



Class 1 – Vintage





Class 2 – Classic Sports Racers - aka “Fly Can-Ams”

(note: Fly Slotwings SPORT EDITIONs are not allowed)

Class 3 – Slot.it / Policar Classics



Class 4 - Trans-Am







Class 5 –Modified Stock Car









Class 6 – GT





Class 7 - Modified Sports Prototype

Class 8 – Thunderslot CanAm







Class 9 - Slot It Group C





Class 10 - Formula One





Class 11 - Pioneer Legends





Class 12 - NSR Classics







NOTES





Vintage class - rear axle bushings on (Fly in line) and (Sebring) chassis. 

(Allows for rear axle bushing repositioning to correct misalignment of rear axle and motor shaft.)



rules added on 2/4/24 are in bold red


IMAR CLASS RULES 2022/2023 Season


I.M.A.R. CLASS RULES

2023 Season


Remember: If the rules do not say you can change something,

then you aren’t allowed to – thanks!


Note: Tires may always be changed (no foam)


Class 1 – Vintage



Class 2 – Classic Sports Racers - aka “Fly Can-Ams”

(note: Fly Slotwings SPORT EDITION's are not allowed)

Class 3 – Slot.it / Policar Classics

SlotIt - Ferrari 312PB, Alfa Romeo 33/3, Chaparral 2E, Ford GT40, Ford GT 40 MkII, McLaren M8D, Matra MS670, Chapparal 2G, Ferrari 330P4,(Chaparral 2f) and (Ferrari 512)



Class 4 - Trans-Am




Class 5 –Modified Stock Car





Class 6 – GT



Class 7 - Modified Sports Prototype

Class 8 – Thunderslot CanAm




Optional Classes as time permits and owner approves


F1 class as voted on, rule to be determined




Pro Slot Cheapies / GT







NOTES






Vintage class - rear axle bushings on (Fly in line) and (Sebring) chassis. 

(Allows for rear axle bushing repositioning to correct misalignment of rear axle and motor shaft.)


rules added on 1/24/23 are in bold red and underlined









IMAR CLASS RULES 2021/2022 Season



I.M.A.R. CLASS RULES

2021/2022 Season

Remember: If the rules do not say you can change something,

then you aren’t allowed to – thanks!

Note: Tires may always be changed (no foam)

Class 1 – Vintage

● Sports cars and sedans that could have or did compete prior to 1969.

● No magnets allowed

● Motor: Either Ninco NC1 or NC8; Derby City Raceway MTI or SL1; H&R Jackrabbit (blue motor) must be used

● Chassis must be in-line.

Class 2 – Classic Sports Racers - aka “Fly Can-Ams”

● Cars must be Fly, Monogram, GB Track or Carrera models of Can-Am sports racers (not production based) from 1966-1974.

● No magnets allowed

● You may replace rear wheels with plastic press-on (not set screw) wheels

Class 3 – Slot.it / Policar Classics

● Car must be a Slot.it or Policar Classic with stock configuration and OEM parts.

● No magnets allowed. Motor must either be stock, Scalextric black stripe, or Piranha 21.5k.

Class 4 - Trans-Am

● American Tran-Am era cars that competed in American Trans-Am Road Race Series (through 1974).

● Chassis pods not allowed

● Magnet Marshall measured down force limits will be 150g in any location.

Class 5 – Scalextric Stock Car

● Cars must be Scalextric NASCAR, USAC, or other American stock car series racers.

● Magnet Marshall measured down force limit will be 225 grams maximum

Class 6 – GT

● Cars must be modern GT and TransAm cars from 1990 until present

● Motors must be rated no higher than 21,500 rpm's at 12V.

● Magnet Marshall measured down-force limit will be 175 grams maximum.

● Axles, axle bushings, wheels, and gears may be replaced


● Class 7 - Modified Sports Prototype

● Must be sports prototype body, open or closed cockpit allowed.

● Cars must be based on plastic RTR chassis and motor

● Magnet Marshall measured down-force limit will be 400 grams maximum

● All modifications are allowed, with the following exceptions/restrictions:

● Body must be hard shell, printed plastic, or resin with a driver figure, an interior, and clear

“glass” present

Optional Class 8 – Pro Slot Cheapies / GT

● Proslot GT cars

● No magnets allowed

● Green End Bell, Hawk 1, or ProSlot Evo 2 motor must be used

● You may replace rear wheels with plastic press-on (only) wheels

● Pinion gear may be changed and must be 9, 10, or 11 tooth

● Spur gear may be changed and must be 36 or 37 tooth


• Remember: If the rules do not say you can change something, then you aren’t allowed to – Thanks!

• If you aren’t sure about a rule, ask a Rules Marshall.

• PLEASE: If you aren’t sure about buying a car for a class, ask the

Marshalls about legality on group email, or ask a Rules Marshall.

NOTES

• SlotIt / Policar Classics:

SlotIt - Ferrari 312PB, Alfa Romeo 33/3, Chaparral 2E, Ford GT40, Ford GT 40 MkII, McLaren

M8D, Matra MS670, Chapparal 2G, Ferrari 330P4

Policar - Ferrari 412P (may upgrade rear wheels to metal, same as SI 330p4)

• SCX Pro Cars not allowed in any class except Modified Sports Prototypes

• Variance approved by rules martials per general rule #10:

Vintage class - rear axle bushings on (Fly in line) and (Sebring) chassis.

(Allows for rear axle bushing repositioning to correct misalignment of rear axle and motor

shaft.)




IMAR CLASS RULES 2020/2021 Season





IMAR CLASS RULES 2019/2020 Season



Note: You can change tires in all classes.

All other changes are only allowed specifically, as stated in these rules.


Class 1 – Vintage (any brand)


Class 2 – 2014 Classic Sports Racers


Class 4 – Slot.It Classics


Class 4- Trans-Am (any brand)


Class 5 - Stock Car (any brand)


Class 6 – GT (any brand)


Class 7 - Modified Sports Prototype (any brand)


Remember – If the rules do not say you can change something – then you are not allowed to – thanks.




Exhibition Class is to be raced at the track owner’s

discretion after the official classes are completed:


Exhibition Class - Cheapies/GT




Exhibition Class - 2014 Modified Super Touring and Rally





NOTES:



2104 / 2015 Vintage Rules


Chassis must be in-line. Sidewinder or anglewinder chassis are prohibited.

IMAR CLASS RULES 2018/2019 Season



Note: You can change tires in all classes.

All other changes are only allowed specifically, as stated in these rules.


Class 1 – Vintage (any brand)


Class 2 – 2014 Classic Sports Racers


Class 4 – Slot.It Classics


Class 4- Trans-Am (any brand)


Class 5 - Stock Car (any brand)


Class 6 – GT (any brand)


Class 7 - Modified Sports Prototype (any brand)


Remember – If the rules do not say you can change something – then you are not allowed to – thanks.




Exhibition Class is to be raced at the track owner’s

discretion after the official classes are completed:


Exhibition Class - Cheapies/GT




Exhibition Class - 2014 Modified Super Touring and Rally





NOTES:



2104 / 2015 Vintage Rules


Chassis must be in-line. Sidewinder or anglewinder chassis are prohibited.

IMAR CLASS RULES 2017/2018 Season



Note: You can change tires in all classes.

All other changes are only allowed specifically, as stated in these rules.


Class 1 – Vintage (any brand)


Class 2 – 2014 Classic Sports Racers


Class 4 – Slot.It Classics


Class 4- Trans-Am (any brand)


Class 5 - Stock Car (any brand)


Class 6 – GT (any brand)


Class 7 - Modified Sports Prototype (any brand)


Remember – If the rules do not say you can change something – then you are not allowed to – thanks.




Exhibition Class is to be raced at the track owner’s

discretion after the official classes are completed:


Exhibition Class - Cheapies/GT




Exhibition Class - 2014 Modified Super Touring and Rally





NOTES:



2104 / 2015 Vintage Rules


Chassis must be in-line. Sidewinder or anglewinder chassis are prohibited.

IMAR CLASS RULES 2016/2017 Season


No rules were passed out via email

IMAR CLASS RULES 2015/2016 Season

IMAR CLASS RULES 2015/2016 Season

Class 1 – Vintage (any brand)

● Sports cars and sedans that could have or did compete prior to 1969

● No magnets allowed

● Ninco NC1, Ninco NC8 or Derby City Raceway MT1 or SL1 motor must be used

● Chassis must be in-line

● Upgraded Vintage cars (wheels,axle,bushings) from the 2014 /2015 IMAR rules set will be allowed in this class.

If the car wins a race, then it must be brought into the current 2015 rules set.

Class 2 – Slot.It Classics

● Car must be a Slot.It classic with stock configuration and OEM parts.

● No magnets allowed. Motor must either be stock orange endbell motor or Scalextric black stripe

Class 3- Scalextric Trans-Am

● Scalextric TransAm era cars that could have competed in American Trans-Am Road Race Series (through 1974)

● Magnet Marshall measured down force limit - 150g maximum in any location

Class 4 - Stock Car (any brand)

● Cars must be NASCAR, USAC, or other American stock car series racers.

● Magnet Marshall measured down force limit - 225g maximum

Class 5 – GT (any brand)

● Cars must be modern GT and TransAm cars from 1990 until present

● Motors must be rated no higher than 21,500 rpm's at 12V

● Magnet Marshall measured down-force limit - 175g maximum

● Axles, axle bushings, wheels, and gears may be replaced

Class 6 - Modified Sports Prototype (any brand)

● Must be sports prototype body, open or closed cockpit allowed.

● Cars must be based on plastic RTR chassis and motor

● Magnet Marshall measured down-force limit will be 400g maximum

● All modifications are allowed, with the following exceptions/restrictions:

o Body must be hard shell, printed plastic, or resin with a driver figure, an interior, and clear “glass” present

Remember – If the rules do not say you can change something – then you aren’t allowed to – thanks.

2


Exhibition Classes are to be raced at the track owner’s

discretion after the official classes are completed

Exhibition Class –2014 Cheapies/GT

● Proslot GT cars

● No magnets allowed

● Green End Bell, Hawk 1, or ProSlot Evo 2 motor must be used

● You may replace rear wheels with plastic press-on (only) wheels

o Pinion gear may be changed and must be 9, 10, or 11 tooth

o Spur gear may be changed and must be 36 or 37 tooth

Exhibition Class – 2014 Classic Sports Racers

● Cars must be Fly, Monogram, GB Track or Carrera models of Can-Am sports racers (not production based) from 1966-1974.

● No magnets allowed

● You may replace rear wheels with plastic press-on (only) wheels

Exhibition Class - 2014 Modified Super Touring and Rally

● Cars must be sedans and rally car based models

o e.g. DTM, BTCC, ETCC, WTCC,WRC, SCCA Pro Rally and similar cars

● These cars must be based on plastic RTR chassis and motor

● No magnets allowed

● All modifications are allowed, with the following exceptions/restrictions:

o Chassis must meet the body as from manufacturer.

o Body must be hard shell plastic or resin with a driver figure, an interior, and clear “glass” present

o No holes may be cut in chassis.

2104 / 2015 Vintage Rules

 Sports cars and sedans that could have or did compete prior to 1969.

 Wheels, tires, axles & axle bushings may be changed. Note: Gears may not be changed.

 Use of magnets is prohibited.

 Vintage cars will be required to use one of the following motors:

o two Ninco motors

 Ninco NC1 and NC8

o two available from Derby City Speedway at http://derbycityspeedway.com/mtracingresins.html

 MT1 and SL1

 Chassis must be in-line. Sidewinder or anglewinder chassis are prohibited.

IMAR CLASS RULES 2014/2015 Season

IMAR CLASS RULES

2014 / 2015 Season Unofficial


.


Class 1 – Vintage

 Sports cars and sedans that could have or did compete prior to 1969.

 No magnets allowed

 Wheels, axles, & axle bushings may be changed - gears must be stock

 Ninco NC1, Ninco NC8 or Derby City Raceway MT1 or SL1 motor must be used

 Chassis must be in-line - sidewinder or anglewinder chassis are prohibited.

Class 2 – Cheapies


 FIA GT championship / Lemans GT1. Production-based sports and GT cars that competed in SCCA Production

classes, GT class, ALMS GT and GTS, and FIA LeMans GT1 races from 1980 to present.

 Cars must be Scalextric, Ninco, Carrera, Monogram, Fly or Proslot GT cars that do not have adjustable motor pods.

 No magnets allowed

 Green End Bell, Hawk 1, or ProSlot Evo 2 motor must be used

 You may replace rear wheels with plastic press-on (only) wheels

 Pinion gear may be changed and must be 9, 10, or 11 tooth

 Spur gear may be changed and must be 36 or 37 tooth


Class 3 – Classic Sports Racers


 Cars must be Fly, Monogram, GB Track or Carrera models of Can-Am sports racers (not production based) from

1966-1974.

 No magnets allowed

 You may replace rear wheels with plastic press-on (only) wheels


Class 4 - Modified Super Touring and Rally


 Cars must be sedans and rally car based models

o e.g. DTM, BTCC, ETCC, WTCC,WRC, SCCA Pro Rally and similar cars

 These cars must be based on plastic RTR chassis and motor

 No magnets allowed

 All modifications are allowed, with the following exceptions/restrictions:

o Chassis must meet the body as from manufacturer.

o Body must be hard shell plastic or resin with a driver figure, an interior, and clear “glass” present

o No holes may be cut in chassis.


Class 5 – Advanced Sports Racers


 Cars must be models of Le Mans, Interserie or Can-Am sports racers (not production based) from 1966-1976

 No magnets allowed

 Motor must either be stock or Scalextric black stripe may be substituted

 Axle bushings, axles, gears and wheels may be changed with Fly, Monogram, GB Track, or Carrera cars


2


Class 6- Trans-Am


 Sports sedans and 2+2 sedans that competed or could have competed in American Trans-Am Road Race Series

(through 1974)

 Magnet Marshall measured downforce limits will be 150 grams maximum and magnet may be placed in any

location.


Class 7 - Stock Car

 Cars must be NASCAR, USAC, or other American stock car series racers.

 Magnet Marshall measured downforce limit will be 225 grams maximum

Class 8 – GT2

 Cars must be modern GT and TransAm cars from 1990 till present

o e.g. SCCA GT, ALMS GT and GTS, FIA LeMans GT1 & GT2 and Modern American TransAm series

 Motors must be rated no higher than 21,500 rpm's at 12V.

 Magnet Marshall measured down-force limit will be 175 grams maximum.

 Axles, axle bushings, wheels, and gears may be replaced

o ball or roller bearings are prohibited. 

o gear ratio must be between 2.8/1 up to 3.2/1


Class 9 - Modified Sports Prototype


 Must be sports prototype body, open or closed allowed

o e.g. Can-Am, IMSA/WSC prototypes, Lemans/ALMS P1-P2, IMSA GTP, FIA Group C, Daytona

Prototypes


 Cars must be based on plastic RTR chassis and motor

 Magnet Marshall measured down-force limit will be 500 grams maximum

 All modifications are allowed, with the following exceptions/restrictions:

o Chassis must meet the body as from manufacturer.

o Body must be hard shell, printed plastic, or resin with a driver figure, an interior, and clear “glass” present

o No holes may be cut in the chassis

o Magnets that are added must be inside/topside of chassis.


Remember – If the rules do not say you can change something – then you aren’t allowed to – thanks.




IMAR CLASS RULES 2013/2014 Season

(09/7/13)


.


OVERALL GOVERNING RULE - IF THE RULES DO NOT SAY

YOU CAN MODIFY SOMETHING, YOU CAN’T!


Class 1 – Vintage

Class 2 – GT1 (formerly Cheapies)




Class 3 – Classic Sports Racers



Class 4 - Modified Super Touring and Rally



Class 5 – Advanced Sports Racers



Class 6- Trans-Am



Class 7 - Stock Car

Class 8 – GT2






Class 9 - Modified Sports Prototype






OVERALL GOVERNING RULE - IF THE RULES DO NOT SAY

YOU CAN MODIFY SOMETHING, YOU CAN’T!




IMAR CLASS RULES 2010/2011 Season


IMAR CLASS RULES

2010 – 2011 season

.

 

Class 1 – Cheapies


- Cars must be Pro Slot Porsche 911, 911 GT2 or 911 GT3, Ferrari F355 or F360

- Green End Bell motor must be used

- Use of magnets is prohibited

-You may replace rear wheels with plastic press-on (only) wheels

 

- Replacement pinion gear may be non-original and may be metal, but must have a tooth count between 9 and 11 inclusive. Replacement of spur gear with 36 teeth is permissible.

 

 

 

Class 2 – Vintage


- Sports cars and sedans that could have or did compete prior to 1966.


- Wheels may be changed


- Use of magnets is prohibited.

 

- Motor may be of any brand and rated at or below 18,500 rpm.

 

- Chassis must be in-line.  Sidewinder or anglewinder chassis are prohibited.

 

 

 

Class 3– Super Touring and Rally


- Cars must be sedans and rally car based models (e.g. DTM, BTCC, ETCC, WTCC,WRC, SCCA Pro Rally and similar cars)


- These cars must be based on plastic RTR chassis and motor (plastic chassis only, e.g. no TSRF, Pro Track Spider, metal Monogram chassis).


- Use of magnets is prohibited


- All modifications are allowed, with the following exceptions/restrictions:


  * Chassis must meet the body as from manufacturer.


  * Body must be hard shell plastic or resin with a driver figure, an interior, and “glass” present


  * No holes may be cut in chassis.

 

 

 

 

 

 

 

Class 4 – Classic Sports Racers

 

 - Cars must be Fly, Monogram, GB Track or Carrera models of Can-Am sports racers (not production based) from 1966-1974.

 

- No magnets allowed

 

-You may replace rear wheels with plastic press-on (only) wheels

 

 

 

Class 5 – Advanced Sports Racers

 

 - Cars must be models of Le Mans, Interserie or Can-Am sports racers (not production based) from 1966-1976

 

- No magnets allowed

 

- Motor must either be stock or Scalex black stripe may be substituted 

 

- Axle bushings, axles, gears and wheels may be changed with Fly, Monogram, GB Track, or Carrera cars

 

 

 

Class 6- Trans-Am

 

- Sports sedans and 2+2 sedans that competed or could have competed in American Trans-Am Road Race Series (through 1974).


- Scalextric Trans-Am cars will run with the magnet PMTR1030 in the front position

 

-Fly cars must run stock magnet in any position.


- Carrera cars may use Scalextric Trans-Am wheels and tires.

 

 

Class 7 - Stock Car

 

- Cars must be NASCAR, USAC, or other American stock car series racers.

- In-line cars (older style Scalex only) may add two (2) Radio Shack dot magnets inside of chassis on top of existing bar (the only location allowed).


- Sidewinder cars must run the stock bar magnet in any factory prepared, chassis position.

 

 

Class 8 – GT/Production Sports


- This class is for all production-based sports and GT cars, not one-off cars race cars built for the road (e.g. SCCA Production classes, GT class, ALMS GT and GTS, FIA GT


- Motors must be rated below 21,500 rpm.

 

- One PMTR1063 magnet may be used and may be placed in a non-stock location inside the chassis. Magnet may be cut, sawed, filed or broken to fit into the chassis. No holes may be cut in the chassis to add magnets or to make the magnets flush with the bottom of the chassis. Chassis may not be shaved or thinned to reduce magnet distance to the track and/or increase magnet effectiveness. Magnet holders may be shaved down to height of surrounding frame, e.g. Marcos.

 

- Revell / Monogram cars may use stock magnet location on bottom of chassis.

 

- Rear axle may be replaced.  Rear axle bushings may be replaced.  Ball or roller bearings are prohibited.  Rear wheels may be replaced. 

 

- Motor pinion gear may be replaced and crown or spur gear may be replaced – however gear ration must remain the same.

 

 

 

Class 9 – Modern Formula One

 

-  Scalex Formula One from 2001 to present.

 

-  Cars must be authentically liveried

 

-  A car may be “re-liveried” to make it look like another actual race car

 

 

 

Class 10 - Modified Sports Prototype


- Must be sports prototype body, open or closed allowed (e.g. Can-Am, IMSA/WSC prototypes, Lemans/ALMS P1-P2, IMSA GTP, FIA Group C, Daytona Prototypes).


- All modifications are allowed, with the following exceptions/restrictions:

 

* Chassis must meet the body as from manufacturer.


* Body must be hard shell plastic or resin with a driver figure, an interior, and “glass”.


* Magnets that are added must be inside/topside of chassis.


* No holes may be cut in chassis to add magnets or make magnets flush with bottom of chassis.

 

* All stock locations can be used with upgraded magnets, except cars that have stock magnet locations on the underside of the chassis, in which case the original OEM magnet may be used, but no upgrade or modification may be made to magnets in this positions. Magnet holders may be shaved to the level of the surrounding chassis.

* Tires must fit under the unmodified body.


- Cars must be based on plastic RTR chassis and motor

 

- Wings must be in place at the start of each race, both front and rear


IMAR CLASS RULES 2009/2010 Season

IMAR CLASS RULES

2009 – 2010 season

.


Class 1 – Cheapies


- Cars must be Pro Slot Porsche 911 GT2 or GT3, Ferrari F355 or F360


- Green End Bell motor must be used


- Use of magnets is prohibited


-You may replace rear stock tires with silicone tires, and rear wheels with plastic (only) wheels


- Replacement pinion gear may be non-original and may be metal, but must have a tooth count between 9 and 11 inclusive. Replacement of spur gear with 36 teeth is permissible.



Class 2 – Vintage


- Sports cars and sedans that could have or did compete prior to 1966.


- Tires and wheels may be changed


- Use of magnets is prohibited.


- Motor may be of any brand and rated at or below 18,500 rpm.


- Chassis must be in-line. Sidewinder or anglewinder chassis are prohibited.




Class 3– Super Touring/Rally


- Cars must be four seater configuration sedans, and rally car based models (e.g. DTM, BTCC, ETCC, WTCC,WRC, SCCA Pro Rally and similar cars)


- These cars must be based on plastic RTR chassis and motor (plastic chassis only, e.g. no TSRF, Pro Track Spider, metal Monogram chassis).


- Use of magnets is prohibited


- All modifications are allowed, with the following exceptions/restrictions:


* Chassis must meet the body as from manufacturer.


* Body must be hard shell plastic or resin with driver figure, interior, and “glass” present


* No holes may be cut in chassis.






Class 4 – Classic Sports Racers


- Cars must be models of Le-Mans or Can-Am sports racers (not production based) from 1966-1976.


- No magnets allowed


- Motor may be of any brand and must be rated at 18,000 rpm or less.


- Any gears, wheels and tires may be used; however gear ratio must remain the same as stock.



- Rear axle may be replaced. Rear axle bushings may be replaced. Ball or roller bearings are prohibited.



Class 5- Trans-Am


- Sports sedans and 2+2 sedans that competed or could have competed in American Trans-Am Road Race Series (through 1974).


- Scalextric Trans-Am cars will run with the magnet PMTR1030 in the front position


- Tires must remain stock.


- Carrera cars may use Scalextric Trans-Am wheels and tires.


- Fly cars must run stock magnet in any position.



Class 6 - Stock Car


- Cars must be NASCAR, USAC, or other American stock car series racers.


- Tires must be stock tires or Hot Shoe replacements (any compound).


- In-line cars (older style Scalex only) may add two (2) Radio Shack dot magnets inside of chassis on top of existing bar (the only location allowed).


- Sidewinder cars must run the stock bar magnet in any factory prepared, chassis position.


.

Class 7 – GT/Production Sports


- This class is for all production-based sports and GT cars, not one-off cars race cars built for the road (e.g. SCCA Production classes, GT class, ALMS GT and GTS, FIA GT


- Motors must be rated below 21,500.


- One PMTR1063 magnet may be used and may be placed in a non-stock location inside the chassis. Magnet may be cut, sawed, filed or broken to fit into the chassis. No holes may be cut in the chassis to add magnets or to make the magnets flush with the bottom of the chassis. Chassis may not be shaved or thinned to reduce magnet distance to the track and/or increase magnet effectiveness. Magnet holders may be shaved down to height of surrounding frame, e.g. Marcos.


- Revell / Monogram cars may use stock magnet location on bottom of chassis.


- Rear axle may be replaced. Rear axle bushings may be replaced. Ball or roller bearings are prohibited. Rear wheels may be replaced.


- Motor pinion gear may be replaced and crown or spur gear may be replaced – however gear ration must remain the same.




Class 8 - Scalextric IRL Cars


- Magnet location must be in a factory prepared position


- Tires must be stock.


- Wings must be in place at the start of each race, both front and rear.



Class 9 – Modern Formula One






Class 10 - Modified Sports Prototype


- Must be sports prototype body, open or closed allowed (e.g. CanAm, IMSA/WSC prototypes, Lemans/ALMS P1-P2, IMSA GTP, FIA Group C, Daytona Prototypes).


- All modifications are allowed, with the following exceptions/restrictions:


* Chassis must meet the body as from manufacturer.


* Body must be hard shell plastic or resin with driver, interior, and “glass”.


* Magnets that are added must be inside/topside of chassis.


* No holes may be cut in chassis to add magnets or make magnets flush with bottom of chassis.


- All stock locations can be used with upgraded magnets, except cars that have stock magnet locations on the underside of the chassis, in which case the original OEM magnet may be used, but no upgrade or modification may be made to magnets in this positions. Magnet holders may be shaved to the level of the surrounding chassis.


- Tires must fit under the unmodified body.


- Cars must be based on plastic RTR chassis and motor


- Wings must be in place at the start of each race, both front and rear


(Rules changes from last year are in bold, red italics)


IMAR CLASS RULES 2007/2008 Season

IMAR CLASS RULES

2008 – 2009 season

.

Class 1 – Cheapies


- Cars must be ProSlot Porsche 911 GT2 or GT3, Ferrari F355 or F360


- Green End Bell motor must be used


- Use of magnets is prohibited


-You may replace rear stock tires with silicon tires


- Replacement pinion gear may be non-original and may be metal, but must have a tooth count between 9 and 11 inclusive. Replacement of spur gear with 36 teeth is permissible.



Class 2 – Vintage


- Sports cars and sedans that could have or did compete prior to 1966.


- Tires and wheels may be changed


- Use of magnets is prohibited.


- Motor may be of any brand and rated at or below 18,500 rpm.


Class 3– Super Touring/Rally


- Cars must be sedans, and rally car based models (e.g. DTM, BTCC, ETCC, WTCC,WRC, SCCA Pro Rally and similar cars)


- These cars must be based on plastic RTR chassis and motor (plastic chassis only, e.g. no TSRF, Pro Track Spider, metal Monogram chassis).


- Use of magnets is prohibited


- All modifications are allowed, with the following exceptions/restrictions:


- Chassis must meet the body as from manufacturer.


- Body must be hard shell plastic or resin with driver figure, interior, and “glass” present


- No holes may be cut in chassis.






Class 4 – Classic Sports Racers


- Cars must be models of Le-Mans or Can-Am sports racers (not production based) from 1966-1976.





Class 5- Trans-Am


- Sports sedans and 2+2 sedans that competed or could have competed in American Trans-Am Road Race Series (through 1974).


- Scalextric Trans-Am cars will run with the magnet PMTR1030 in the front position


- Tires must remain stock.


- Carrera cars may use Scalextric Trans-Am wheels and tires.


- Fly cars must run stock magnet in any position.



Class 6 - Stock Car


- Cars must be NASCAR, USAC, or other American stock car series racers.


- Tires must be stock tires or Hot Shoe replacements (any compound).


- In-line cars (older style Scalex only) may add one (1) Radio Shack dot magnet inside of chassis on top of existing bar (the only location allowed).


- Sidewinder cars must run the stock bar magnet in the center, factory prepared, chassis position.


.

Class 7 – GT/Production Sports


- This class is for all production-based sports and GT cars, not one-off cars race cars built for the road (e.g. SCCA Production classes, GT class, ALMS GT and GTS, FIA GT


- Motors must be rated below 21,500.


- One PMTR1063 magnet may be used and may be placed in a non-stock location inside the chassis. Magnet may be cut, sawed, filed or broken to fit into the chassis. No holes may be cut in the chassis to add magnets or to make the magnets flush with the bottom of the chassis. Chassis may not be shaved or thinned to reduce magnet distance to the track and/or increase magnet effectiveness. Magnet holders may be shaved down to height of surrounding frame, e.g. Marcos.


- Revell/Monogram cars may use stock magnet location on bottom of chassis.




Class 8 - Scalextric IRL Cars


- Magnet location must be in a factory prepared position


- Tires must be stock.


- Wings must be in place at the start of each race, both front and rear.


Class 9 – Modern Formula One






Class 10 - Modified Sports Prototype


- Must be sports prototype body, open or closed allowed (e.g. CanAm, IMSA/WSC prototypes, Lemans/ALMS P1-P2, IMSA GTP, FIA Group C, Daytona Prototypes).


- All modifications are allowed, with the following exceptions/restrictions:


- Chassis must meet the body as from manufacturer.


- Body must be hard shell plastic or resin with driver, interior, and “glass”.


- Magnets that are added must be inside/topside of chassis.


- No holes may be cut in chassis to add magnets or make magnets flush with bottom of chassis.


- All stock locations can be used with upgraded magnets, except cars that have stock magnet locations on the underside of the chassis, in which case the original OEM magnet may be used, but no upgrade or modification may be made to magnets in this positions. Magnet holders may be shaved to the level of the surrounding chassis.


- Tires must fit under the unmodified body.


- Cars must be based on plastic RTR chassis and motor




(Rules changes from last year are in red italics)




IMAR CLASS RULES 2006/2007 Season

IMAR CLASS RULES

 

.

Class 1 – Cheapies


- Cars must be ProSlot Porsche 911 GT2 or GT3, Ferrari F355 or F360


- ProSlot Evo 1 motor must be used


- Use of magnets is prohibited


-You may replace rear stock tires with silicon tires

 

- Replacement pinion gear may be non-original and may be metal, but must have a tooth count between 9 and 11 inclusive.


 

Class 2 – Vintage


- Sports cars and sedans that could have or did compete prior to 1966.


- Tires and wheels may be changed


- Use of magnets is prohibited.


- Motor used must be of Class 1.These include: Standard Fly & Scalex Mabuchi cans, Ninco NC-1 & NC-2, Carrera Standard, MRRC, ProSlot Evo1 & Evo2, any Cartix, OzRace, Plafit or similar sized motor that is rated below 18,500 rpm. No high performance or upgraded motors will be allowed in this class. The use of older motors (e.g. Eldon, Strombecker) will be handled on a case-by-case basis by the Rules Marshall.

 

-          

Class 3– Super Touring/Rally

 

- Cars must be sedans, and rally car based models (e.g. DTM, BTCC, ETCC, WTCC,WRC, SCCA Pro Rally and similar cars)


- These cars must be based on plastic RTR chassis and motor (plastic chassis only, e.g. no TSRF, Pro Track Spider, metal Monogram chassis).


- Use of magnets is prohibited


- All modifications are allowed, with the following exceptions/restrictions:


     - Chassis must meet the body as from manufacturer.


     - Body must be hard shell plastic or resin with driver figure, interior, and “glass” present


     - No holes may be cut in chassis.


     - Cars that have stock magnet locations on the underside of the chassis may not use the stock magnet location to add weight


     


 

 

 

Class 4 – Classic Sports Racers

 

 


- Cars must be models of Le-Mans or Can-Am sports racers (not production based) from 1966-1976.

 

- No magnets allowed


-Any rear tire may be used.


Class 5- Trans-Am

 

- Sports sedans and 2+2 sedans that competed or could have competed in American Trans-Am Road Race Series (through 1974).


- Scalextric Trans-Am cars will run with the magnet  PMTR1030 in the front position

 

- Tires must remain stock.


- Carrera cars may use Scalextric Trans-Am wheels and tires.


- Fly cars must run stock magnet in any position.



 

Class 6–Super Cheapie


- Cars must be ProSlot Porsche 911 GT2 or GT3, Ferrari F355 or F360


- Cars must remain stock except:


   -Replacement of rear stock tires with silicon tires

 

   - Cars must use the Professor Motor  PMTR 1500.


   - Scalextric Trans-Am magnet (25mm x 8mm x 2mm) must be used but must be located inside the body and in front of the motor mount.


    - Replacement pinion gear may be non-original and may be metal, but must have a tooth count between 9 and 11 inclusive.


 

 

 

 

 

 

Class 7 - Stock Car

 

- Cars must be NASCAR, USAC, or other American stock car series racers.


- Tires must be stock tires or Hot Shoe replacements (any compound).


- In-line cars (older style Scalex only) may add one (1) Radio Shack dot magnet inside of chassis on top of existing bar (the only location allowed).


- Sidewinder cars must run the stock bar magnet in the center, factory prepared, chassis position.


.

 

 

 

Class 8 – GT/Production Sports


- This class is for all production-based sports and GT cars, not one-off cars race cars built for the road (e.g. SCCA Production classes, GT class, ALMS GT and GTS, FIA GT


- Some coupes based on sedans, e.g. BMW M3 GTR from Rolex GT are allowed, but must be 2 door coupe, not 4 door sedan version).


- Motors must be Class 2. Class 2 motors include: Standard Fly & Scalex Mabuchi cans, ninco NC-1, NC-2, & NC-5, Carrera standard can, MRRC standard can (not the red can), ProSlot Evo1 & Evo-2, any Cartrix, OzRace, Plafit, Slot.It orange can or similar sized motor that is rated below 21,500 rpm. No racing or high-performance motors allowed, even if they came with the car (e.g. Fly Saleen must have a Class 2 motor, not Racing motor). The use of older motors will be handled on a case-by-case basis by the rules Marshall.


- One PMTR1063 magnet may be used and may be placed in a non-stock location inside the chassis. Magnet may be cut, sawed, filed or broken to fit into the chassis. No holes may be cut in the chassis to add magnets or to make the magnets flush with the bottom of the chassis. Chassis may not be shaved or thinned to reduce magnet distance to the track and/or increase magnet effectiveness.

 

- Revell/Monogram cars may use stock magnet location on bottom of chassis.

 

 

 

 

 

Class 9 - Scalextric IRL Cars


    - Magnet location may be determined by the driver, but must be in a factory prepared position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Class 10 - Modified Sports Prototype


- Must be sports prototype body, open or closed allowed (e.g. CanAm, IMSA/WSC prototypes, Lemans/ALMS P1-P2, IMSA GTP, FIA Group C, Daytona Prototypes).


- All modifications are allowed, with the following exceptions/restrictions:

 

    - Chassis must meet the body as from manufacturer.


    - Body must be hard shell plastic or resin with driver, interior, and “glass”.


    - Magnets that are added must be inside/topside of chassis.


    - No holes may be cut in chassis to add magnets or make magnets flush with bottom of chassis.


    - All stock locations can be used with upgraded magnets, except cars that have stock magnet locations on the underside of the chassis, in which case the original OEM magnet may be used, but no upgrade or modification may be made to magnets in this positions.


    - Tires must fit under the unmodified body.


    - Cars must be based on plastic RTR chassis and motor

 

  

 

 

 

 

 

(Rules changes from last year are in red italics)