The Basic-MAX GP Competition Regulations (hereinafter referred to as “B-MAX GP Regulations'”) include additional rules specified by Basic-MAX GP, in addition to the Mini 4WD competition regulations publicly released by Tamiya Corporation (hereinafter referred to as “Tamiya Regulations”).
The following additional restrictions are specified within the B-MAX GP Rules.
【０】 B-MAX GP Official Competition Regulations
Preamble
Basic-MAX GP (hereinafter referred to as B-MAX GP) has established competition regulations to ensure that Mini 4WD racing can be enjoyed through the Tamiya Mini 4WD products released by Tamiya Corporation. These regulations are designed to create a fair playing field for Mini 4WD racing regardless of age or gender, encompassing competition vehicles, racecourses, and the rules and etiquette of competition methods worldwide.
The essence of B-MAX GP lies in all racers challenging intricately designed racecourses created by the event organizers, using their skills and a spirit of fair play, under the regulations that limit modifications to the machines. We hope that all Mini 4WD racers compete honorably, deepen their interactions through racing, and enhance their respective Mini 4WD skills.
１．Introduction
The B-MAX GP Finals and Qualifying Tournaments (hereinafter collectively referred to as the “Event”) are organized and managed by the B-MAX GP Executive Committee and the organizing team. The rules for the Event are defined in this document, including relevant guidelines and notices (hereinafter referred to as the “Regulations”). The organizing team has the authority to conduct the Event in accordance with these Regulations. Additionally, they hold the authority to make judgments in cases where unforeseen circumstances arise or when applying these Regulations would result in a significant lack of fairness.
２．Eligibility
To ensure the continued organization of B-MAX GP events, participants are required to meet the following eligibility criteria.
(１) Agree to this agreement.
(２) Register for participation through the methods specified by the organizers of each event and qualifying event and obtain eligibility.
(３) Be able to communicate smoothly with event staff and other participants.
(４) Understand and adhere to the event procedures specified separately from this regulation.
(５) In case the B-MAX GP executive committee deems it necessary during the finals and preliminary events, participants must provide personal information such as name, age, address, and allow photography and interviews by the B-MAX GP executive committee and various media companies.
(６) Participants, including their family members, must not have any ties or affiliations with anti-social forces, including but not limited to organized crime groups (yakuza), gang members, quasi-members of organized crime groups, companies associated with organized crime, political racketeers, social movement extortionists, political extortionists, or any similar entities.
【１】Racing Machine
１．Types of Racing Machine:
Adhere to the Tamiya regulations.
２．Specifications of Racing Machine
Adhere to the following provisions in addition to the Tamiya regulations.
（１）Body:
The body used must comply with the following regulations.
< Permitted Items >
- Only plastic bodies are allowed
- Both front and rear must be securely fixed with Tamiya body catch parts.
- Any combinations of body and chassis are allowed.
- Wing parts are not required to be attached.
<Prohibited Items>
- Splitting of the body.
- The use of Polycarbonate and PET bodies.
３．Dimensions of Racing Machine
Adhere to the following provisions in addition to the Tamiya regulations.
（１）Tires and Wheels:
The tires and wheels used must conform to the following regulations.
< Permitted Items >
- Only combinations of tires and wheels of the same size are allowed.
<Prohibited Items>
- Combining different sizes of tires and wheels, such as mounting low-profile tires on large-diameter wheels.
４．Motor:
Adhere to the Tamiya regulations.
５．Batteries:
Adhere to the following provisions in addition to the Tamiya regulations.
<Prohibited Items>
- Batteries must be installed as specified by the chassis.
(*Using the chassis in reverse is prohibited.)”
６．Modifications
Adhere to the following provisions in addition to the Tamiya regulations.
（１）Body
Body modifications must adhere to the following regulations.
< Permitted Items >
- Painting a body
- Sticker application
- Different combinations of bodies and body parts (wings, etc.)
- Attachment of body and body parts (wings, etc.)
- Body modification is allowed only when there is interference with the chassis, plate, or mass damper, and it must stay within 3mm of the interfering area.
(*To follow the discretion of race organizers and officials). - Cutting/removal of canopy parts for animal placement.
- Please fix the animal with double-sided tape or adhesive.
- Disqualification will occur if the animal falls off during the race.
- Customization of the animal’s appearance.
- Body Cutouts and Applying mesh.
* Please perform trimming within the range where the original shape of the body is still recognizable.
<Prohibited Items>
- The body detaching during a race.
*If the body detaches during a race, it will result in disqualification. - Body parts (such as wings) detaching during a race.
*If the body parts detaches during a race, it will result in disqualification. - Excessive trimming that makes it impossible to recognize the original shape of the body.
- Repairing trimmed areas of the body with adhesives or similar methods.
（２）Chassis
Chassis modifications must adhere to the following regulations.
< Permitted Items >
- Applying stickers.
- Expanding the standard screw holes by 2mm.
- Drilling through non-penetrated standard screw holes.
- Countersinking processing of screw holes.
*Countersinking processing is allowed for all screw holes.
<Prohibited Items>
- Adding new screw holes.
- Cutting or trimming the chassis.
（３）Mass Damper
Mass Damper modifications must adhere to the following regulations.
< Permitted Items >
- Coloring of the mass dampers
- Joining of multiple mass dampers placed on the same screw using multi-tape
- Mass dampers are limited to vertical motion controlled by fixed screws.
- Suspension placement below the plate
(*Disqualification will occur if the suspending mass damper under a plate falls off.)
<Prohibited Items>
- Alteration of mass damper shape
- Enlargement of mass damper holes
* If the holes are enlarged due to wear from long-term use and the maximum distance between them exceeds 5mm, it will be considered as a modification. - Placement of ball-link mass damper arms spanning the axle
* Disqualification will occur if the ball-link mass damper detaches during the race.
（４）Tires and Wheels
Modifications of tires and wheels must adhere to the following regulations.
< Permitted Items >
- Penetration of the wheel’s axle hole
※ Any shaft protruding from the wheel should be protected with multi-tape, rubber tubing, or similar materials. - Bonding of tires and wheels (using double-sided tape, adhesive, etc.)
- Combining tires and wheels of the same size
<Prohibited Items>
- Tire modifications
※ Modifications are considered when there is a change in diameter of 1mm or more due to long-term use.
※ Example: If the diameter of a medium-diameter low-height tire is 25mm or less due to wear from long-term use. - Combining tires and wheels of different sizes
※ Example: Fitting small-diameter tires into medium-diameter low-height wheels, etc.
（５）Roller:
Roller modifications must adhere to the following regulations.
<Permitted Items>
- Roller count and size must comply with Tamiya regulations.
- Coloring of rollers.
- Replacement of roller bearings.
<Prohibited Items>
- Roller modification, including changes to the outer dimensions, cutting or drilling holes in flat surfaces, or expanding bearing holes.
- Use of rollers that have become excessively sharp-edged due to wear during races.
※ Excessive wear resulting in a diameter change of more than ‘1mm’ due to long-term use is considered a modification.
※ Example: If the diameter of the 9mm section of an 8-9mm two-stage aluminum roller is less than 8mm, it is considered a modification.
（６）Plate:
Plate modifications must adhere to the following regulations.
<Permitted Items>
- Countersunk screws processing of existing holes.
- Tapering of edges.
- Strengthening through the penetration of instant adhesive.
- Adhesion of multiple plates.
<Prohibited Items>
- Any modifications other than countersunk screws processing and edge tapering.
- All plates must be securely fastened.
※ Slide movement using grade-up parts’ slide dampers is allowed.
（７）Other parts
Modifications of the other parts must adhere to the following regulations.
<Permitted Items>
- Tamiya grade-up parts brakes.
- Trimming to achieve the required size for brake sponges is allowed.
- Cutting of Mini 4WD multi-tape.
- Cutting of Mini 4WD rubber pipes.
<Prohibited Items>
- Part modification.
- Except when explicitly permitted individually.
- Modification of metal parts such as screws, shafts, and rollers.
- Use of combinations not specified between chassis and A parts.
- Example: Combining a Super 1 chassis battery holder with a Super 2 chassis, etc.
- Using leftover pieces from runners, polycarbonate bodies, etc., for setup.
- Use of parts modified from Mini 4WD catchers.
- Unmounted battery holders.
- Use of brakes other than Tamiya grade-up parts brakes.
- Modification due to brake by the application of heat.
- This is prohibited considering that some stores may not allow the use of certain firearms.
- Use of parts obtained by disassembling motors.
- Unprotected protruding areas such as screws/shafts with rubber tubing or poles.
- Gear modification.
（８）Gimmicks
<Prohibited Items>
- The use of swing-type damping gimmicks involving heavy objects like mass dampers (chouchin, hikuo, norio, Tohoku damper, catcher damper, guillotine damper, Doraemon chouchin, etc.) is prohibited. However, the use of grade-up parts, such as the ball-link mass damper, is allowed. Please configure it according to the B-MAX GP Regulations ‘[1]-6-③.’
【２】Race Course
Races are to be held in accordance with official Tamiya regulations.
For B-MAX GP races, racing on a 3-lane circuit comprised of sections from the Japan Cup Junior Circuit (Item 69506), Junior Circuit Slope Section (Item 69570), and the Japan Cup Jr. Circuit Bank Approach 20 (Item 69571) is recommended.
【３】Race on Certified Courses
Races are to be held in accordance with official Tamiya regulations.
【４】Tech Inspection
The use of the Mini 4WD Check Box (Items 95280/95548) and the Mini 4WD Clearance Gauge (Item 95613) is recommended for vehicle tech inspection to ensure compliance with official Tamiya and B-MAX GP regulations.
【５】Disqualification
Adhere to the official Tamiya regulations
However, for specific details, please contact the race event organizers or organizations, as they will have the authority to determine the rules for each race event.
Regarding the inspection of competitive vehicles, it is necessary to comply with the ‘Basic-MAX GP Competition Rules [1] Racing Machine.
【６】Race Management
Adhere to the official Tamiya regulations
However, for specific details, please contact the race event organizers or organizations, as they will have the authority to determine the rules for each race event.
Regarding the inspection of competitive vehicles, it is necessary to comply with the ‘Basic-MAX GP Competition Rules [1] Racing Machine.
In addition, for B-MAX GP Executive Committee-sanctioned race events, it is necessary to agree to the “B-MAX GP Competition Rules [0] B-MAX GP Executive Committee-sanctioned Competition Regulations.
【７】Restrictions on Participation
Adhere to the official Tamiya regulations
However, for specific details, please contact the race event organizers or organizations, as they will have the authority to determine the rules for each race event.
In addition, for B-MAX GP Executive Committee-sanctioned race events, it is necessary to agree to the “B-MAX GP Competition Rules [0] B-MAX GP Executive Committee-sanctioned Competition Regulations.
【８】How to Participate in Race Events
Entry process is to be managed by event organisers. Those wishing to participate in an event are asked to please contact the local event organisers for more information.
In addition, for B-MAX GP Executive Committee-sanctioned race events, it is necessary to agree to the “B-MAX GP Competition Rules [0] B-MAX GP Executive Committee-sanctioned Competition Regulations.
【９】 Disclaimer for Basic-MAX GP Race Events
Adhere to the official Tamiya regulations.
Please replace ‘organizers’ with the stores or organizations that operate the Basic-MAX GP race events and refer to the Tamiya regulations.
However, for specific details, please contact the race event organizers or organizations, as they will have the authority to determine the rules for each race event.
In addition, for B-MAX GP Executive Committee-sanctioned race events, it is necessary to agree to the “B-MAX GP Competition Rules [0] B-MAX GP Executive Committee-sanctioned Competition Regulations.
Please be aware that this may lead to differences between events.
