Mini-Z Race Classes General Rules

• Chassis:
  • 98mm wheel base only, Kyosho mr01, mr02, mr03, or PN 2.5 chassis only.
• Body:
  • Kyosho Autoscale Hard Bodies, Silver Horse hard bodies, or Jomurema GT01 body only, no lexan bodies.  Lexan windows allowed.  Aftermarket wings allowed as long as they fit in the 80x45 Stock Wing Template.  Must have a solid hard shell roof.  Light covers front and rear must be installed.  No body trimming other than minimal grinding for clearance issues.  All bodies must be 98mm only, no cutting other wheelbase bodies to fit a 98mm chassis.
• Motor:
  • must be an unaltered, unopened Kyosho stock white end bell  (part#s  MZ9P, or MZ9E with wires changes), 
  • NO MOTOR MODIFICATIONS!  Resoldered/replaced wires are the only change allowed.  
  • Must retain stock capacitors and thermal cut off switch connected and functional.  If it appears the end bell has been removed it will be DQ’ed
• Gears: 
  • Open gearing
• Weight:
  • No Weight Restriction
• ESC:
  • Kyosho FHS, FHSS boards only! NO ASF, VE, EVO or other programmable boards 
  • NO electronics modifications to boards, no replaced or stacked fets!
• Power Source:  
  • AAA NiMH batteries only 750mah or more.  Cars must be powered by four AAA batteries. Alkaline, Ni-MH or Ni-Cd batteries may be used. No other type of battery may be used. For example: Lithium Polymer may not be used. Additional battery for transponder allowed
• Wheels/Tires: 
  • All brand Plastic and Aluminum Mini-Z production wheel rims are allowed. Maximum front wheel width is 8.5mm. Maximum wheel diameter is 20mm. All wheel rims must be original design made for Mini-Z RACER, any modification is not allowed, any slot-car design wheel and 3D print wheel not allowed.

• Any wheel base 98 to 102mm, Kyosho mr01, mr02, mr03, or PN 2.5 chassis only.
• Body
  • Silver Horse hard bodies, Kyosho Autoscale Hard Bodies, GL Hard bodies, or Jomurema GT01 body only, no lexan bodies, no XVR (thick lexan).  
  • Lexan windows and roof allowed.  Aftermarket wings allowed as long as they fit in the 80x45 Stock Wing Template.  Front Light covers must be installed.  No body trimming other than minimal grinding for clearance issues. LM Body can only be run on a 102mm wheel base only.
• Motor Options:
  • Kyosho X-speed Motor-V Black end ball motor OR
  • PN 70 Turn (bushing or bearing) OR
  • PN 50 Turn (bushing or bearing)
  • NO WHITE STOCK MOTORS, Motor cans can NOT be opened on any motor, no modified armatures or rotors.  Brushes and Wires can be changed on motors that allow servicing without taking the end bell off.  Thermal cut off and/or capacitors may be removed.   If it appears the end bell has been removed it will be DQ’ed
• Gears: 
  • Open gearing
• Weight:
  • No Weight Restriction
• ESC:
  • Any Kyosho board allowed.
  • No modifications to electronics, no replaced or stacked fetts.
• Power Source:  
  • AAA NiMH batteries only 750mah or more.  Cars must be powered by four AAA batteries. Alkaline, Ni-MH or Ni-Cd batteries may be used. No other type of battery may be used. For example: Lithium Polymer may not be used. Additional battery for transponder allowed.
• Wheels/Tires: 
  • All brand Plastic and Aluminum Mini-Z production wheel rims are allowed. Maximum front wheel width is 8.5mm. Maximum wheel diameter is 20mm. All wheel rims must be original design made for Mini-Z RACER, any modification is not allowed, any slot-car design wheel and 3D print wheel not allowed.

• Chassis:
  • 98mm wheel base, Kyosho mr01, mr02, mr03, or PN 2.5 chassis only.
• Body:
  • Kyosho Autoscale Hard Bodies, Silver Horse hard bodies, or Jomurema GT01 body only, no lexan bodies.  Lexan windows and roof allowed.  Aftermarket wings allowed as long as they fit in the 80x45 Stock Wing Template.  Front Light covers must be installed.  No body trimming other than minimal grinding for clearance issues.  All bodies must be 98mm only, no cutting other wheelbase bodies to fit a 98mm chassis.
• Motor:
  • Any brand 3500kv brushless motor (non-sensored, max KV 3800)
  • Max can diameter is 16mm, No option or aftermarket rotors are allowed.
• Gears:
  • Fixed Gear ratio 64 Pitch 
    • 16 Pinion (#416416 or #426416 or pinion clearly marked)
    • 53T Spur Gear (#MR2953WC Yellow or #MR2055-T53WC Yellow or clearly marked on spur) ONLY
• Weight:
  • Minimum Weight 160g
• ESC: 
  • Kyosho ASF VE VE Pro MR03S RWD and EVO, PN 16A ESC (#500807 and #500807A)
  • No modifications to electronics, no replaced or stacked fetts.
• Power Source:  
  • AAA NiMH batteries only 750mah or more.  Cars must be powered by four AAA batteries. Alkaline, Ni-MH or Ni-Cd batteries may be used. No other type of battery may be used. For example: Lithium Polymer may not be used. Additional battery for transponder allowed.
• Wheel: 

All brand Plastic and Aluminum Mini-Z production wheel rims are allowed. Maximum front wheel width is 8.5mm. Maximum rear wheel width is 11mm. Maximum wheel diameter is 20mm. All wheel rims must be original design made for Mini-Z RACER, any modification is not allowed, any slot-car design wheel and 3D print wheel not allowed.

• Chassis:  
  • Kyosho Mini-Z Racer MR01, MR015, MR02, MR03, Jomurema, GL Racing GLR, GLR-GT, MRC MR01, PNR2.5W & 3.0, RTRC RTA, Atomic MRZ, NEXX Skyline, Spectre, Reflex Racing RX28 GT Body 90mm-102mm wheel base only
• Body: 
  • Kyosho Autoscale Hard Bodies, Silver Horse hard bodies, or Jomurema GT01 body only, no lexan bodies.  Lexan windows and roof allowed.  Aftermarket wings allowed as long as they fit in the 80x45 Stock Wing Template.  Front Light covers must be installed.  No body trimming other than minimal grinding for clearance issues. LM Body can only be run on a 102mm wheel base only.  
• Motor:
  • Any brand 2500kv brushless motor (sensored or non-sensored, max KV 2800)
  • Max can diameter is 16mm, No option or aftermarket rotors are allowed.
• Gears: 
  • Fixed Gear ratio 64 Pitch
    • 14 Pinion (#416414 or #426414 or MR2714WC Brown or pinion clearly marked)
    • 53T Spur Gear (#MR2953WC Yellow or #MR2055-T53WC Yellow or clearly marked on spur) ONLY
• Weight:
  • Minimum Weight 160g
• ESC: 
  • OPEN any Sensored or Sensorless ESC.
• Power Source: 
  • 2S Li-Po battery maximum 8.4 volt (checked with multimeter)
• Option Parts: 
  • Any aftermarket brand Mini-Z production parts allowed.
• Wheel: 
  • All brand Plastic and Aluminum Mini-Z production wheel rims are allowed. Maximum front wheel width is 8.5mm. Maximum rear wheel width is 11mm. Maximum wheel diameter is 20mm. All wheel rims must be original design made for Mini-Z RACER, any modification is not allowed, any slot-car design wheel and 3D print wheel not allowed.

• Chassis: 
  • Kyosho Mini-Z Racer MR01, MR015, MR02, MR03, Jomurema, GL Racing GLR, GLR-GT, MRC MR01, PNR2.5W and 3.0, RTRC RTA, Atomic MRZ, NEXX Skyline, Spectre, Reflex Racing RX28 GT, MWX R1. 98mm wheel base only.   Other Chassis may be allowed, check with the Race Director.
• Body: 
  • Lexan Sedan or Lexan Pan body only. NO hard bodies.  XVR acceptable if mounted with body posts.  Sedan Wings must fit the 82x50 Open Wing Template.
• Motor:
  • Any manufacturer motor is allowed, sensored or sensorless.
  • Max can diameter is 16mm.
• Weight:
  • No Minimum Weight
• ESC: 
  • OPEN any Sensored or Sensorless ESC.
• Battery: 
  • 2S Li-Po battery maximum 8.4 volt 
• Option Parts: 
  • Any aftermarket brand Mini-Z production parts allowed.

• Chassis:
  • GLF1 (also MWX chassis conversion for GLF1), PNF1, G-Force F1, original Kyosho F1.
• Body:
  • Lexan F1 body only, no hard or 3d printed bodies except for the G-Force F1 body and original Kyosho F1 bodies.
• Motor:
  • Any brand 2500kv brushless motor (sensored or non-sensored, max KV 2800)
  • Max can diameter is 16mm, No option or aftermarket rotors are allowed.
• Gears: 
  • Fixed Gear ratio 64 Pitch
    • 12 Pinion (#416412 or #426412WC Green or clearly marked)
    • 53T Spur Gear (#MR2953WC Yellow or #MR2055-T53WC Yellow or clearly marked on spur) ONLY.
• Weight:
  • Minimum Weight 140g
• ESC: 
  • OPEN any Sensored or Sensorless ESC.
• Battery: 
  • 2S Li-Po battery maximum 8.4 volt 

***NOTE: some of these sections including tech inspections may be streamlined and/or omitted for regular club racing due to time and resource constraints.  Implementation of these items will be at the discretion of the race director.***

1. Tires
   1. Traction Compound is NOT allowed on the tire or race surface.
   2. Tire warmers are allowed.
   3. Tires may be cleaned with a 70% alcohol solution or water.
   4. If a driver uses a tire cleaner deemed illegal, the driver will be subject to penalties.
   5. Homemade tires, Foam tires, Silicon tires, Urethane tires, or Ethyl Carbamate tires are NOT allowed.
   6. Tire inserts are not allowed.
   7. Please address any questions concerning tires at the driver's meeting or with the race director.
2. Body & Modifications
   1. Hard Bodies
      1. Bodies may be functionally modified with minimal effect on the external appearance. The following non- comprehensive list of body modifications is allowed.
      2. All cars must have a “reasonably viewable paint scheme”, meaning no solid black or solid super dark cars, they are almost invisible on rcp track.
      3. The rear bumper may be removed up to a maximum of 20mm from the ground. Wheel wells may be cut or chamfered internally for tire clearance.
      4. Lower portions of the body may be cut for ground clearance in front, sides, or rear.
      5. Body panels may be reinforced or strengthened internally without affecting external appearance.
      6. Original headlight covers must be installed, but headlight buckets may be removed or omitted. If a headlight cover is lost, the hole may be covered with a decal.
      7. Taillights and taillight covers may be removed or omitted.
      8. Small body parts such as mirrors, canards, exhausts, and front splitters may be omitted or removed to prevent racing damage, getting stuck under a rail, and debris on the track.
      9. All rear wings that come standard with their corresponding hard-shell body may be used with no height limit.
      10. Custom-manufactured aftermarket plastic wings are allowed on any shell but must be cut to meet the height limit.
      11. The above list is non-comprehensive. The purpose and spirit of the rule are to allow functional performance modifications to the body while preserving the scale appearance and realism. The technical inspector has final authority in the judgment of body modification legality. If you have modified your body and have questions regarding the legality of the modifications, please submit the body in question to technical inspection PRIOR to racing qualification or main event rounds. This is to prevent any inadvertent disqualifications. The technical inspector will judge the legality of body modifications and photograph the body in its legal state if necessary.
      12. If the body is further modified post-inspection, the modifications may or may not be legal. For the racer's protection, please re-submit the body in question to technical inspection IMMEDIATELY if significant modifications have been made. If the body is damaged, the condition of the body may or may not be legal. For the racer's protection, please submit the body in question to technical inspection IMMEDIATELY if significant damage occurs. If the damaged body is judged illegal, it must be repaired or replaced for the next qualification or main event round. Qualification or main event results during which racing damage occurs on track will be allowed, as long as the body is not judged to be intentionally designed to break away to benefit performance.
   2. Lexan Bodies
      1. Aftermarket Lexan, molded plastic, 3d printed, and carbon wings are allowed. Maximum
      2. wing size cannot be bigger than the original wing cutting line.
      3. The rear bumper may be removed up to a maximum of 20mm from the ground.
3. Weight, Width, Height, & Gearing Tables
   1. Coming soon
4. Prototype and 3D Printed Parts
   1. Any production or 3D printed parts not publicly available within 30 days before the start of an event, are considered prototype parts. Any new parts must be publicly announced via social media or website and be available for purchase on a national scale to be considered publicly available. 3D print files shared with the public 30 days before the start of an event, and can be printed by the public, will meet the requirement of being publicly available for that particular Part.
5. Sportsmanship
   1. Proper manners and good sportsmanship are expected from all drivers at all times. It is important to understand that general bad behavior like cursing, intentional bad driving, etc. will not be accepted and can result in a driver being penalized, disqualified, or even asked to leave in extreme cases.
   2. All participants will be expected to attend the drivers' meeting. Drivers will be expected to understand and comply with each rule by the time they leave the driver's meeting. Ask any questions at this time.
   3. If there is a rule dispute between drivers it must be brought to the attention of the race director or race personnel.
   4. The officials at the track will do their best to resolve any issue to the satisfaction of everyone.
   5. If a racer notices an illegal item on another racer's car. Please report to the race official after that racer's race, so the car can be inspected without interference.
   6. Substitute drivers are not allowed in any qualification or main event race. Immediate disqualification from the event for both drivers will result.
6. RACE TECH
   1. Motor/Electronics

Motor tech procedures

1. All motors must be Pre-Event teched and marked for motor rule compliance.
2. Brushless Motor must be unsoldered, and sensor wire removed before handing it over to the tech official
3. The motor will be teched for Kv using a SkyRC Motor analyzer (SKY-500020)
4. SkyRC Motor analyzer will be powered using a variable power supply set to 8.4 Volts
5. SkrRC analyzer will be set to the first option, Kv analyzer, power knob will be turned to full throttle level (all lights lit)
6. Brushed motors may be requested to have the diff removed so the tension on the motor checked by hand.
7. Brushed motor Boards/ESCs may be requested to be partially removed (lifted in the back) so the fetts can be inspected.
8. Car Tech
   1. Race Director or Technical inspector can tech any car at any time without reason.
9. Pre-Event Tech
   1. Pre-Event is considered, any time prior to the first race of the event or designated time cutoff whichever comes first. Every driver can submit his car for pre-event tech to make sure they are in compliance with the rules. All classes not considered Open must PreEvent tech the following items, all motors, pinion gears, and spur gears to be ran in the event. Those items will be marked for easy Pre-Race tech.
10. Pre-Race Tech
    1. All cars must be teched prior to each race it is in. Drivers will present their car to the technical director at least 3 minutes prior to the previous race being completed. Car must be turned off with the body removed for the initial tech. Technical director may ask you to turn on the car during their inspection.
11. Post-Race Tech
    1. All Cars must be placed on the post-race tech table after each run. Cars can be either left on or turned off before placing them on the post-tech table. Car cannot leave the post-race tech table until the next race is completed.