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Junior Dragbike rules
Junior Dragbike construction rules
ET Racing
JUNIOR DRAG BIKE (JRB)
A category for Junior riders to be run over 1/8th mile distance with the following restrictions.
ELIGIBILITY.
- To be run on an ET dial in basis.
- Ages 8 -10 are restricted to run 12.9 ET or slower.
- Ages 11 -16 are restricted to run 8.9 ET or slower.
Reserved for non - street legal motorcycles built to give the appearance of a top fuel or funny bike.
Requirements and Specifications
1. ENGINE
Ages 8-10 Restricted to 50cc automatic clutch.
Ages 11-16 restricted to 125cc automatic or manual clutch.
Engine: Any make or model. Any configuration and engine is permitted. Small engine modifications are permitted such as: exhaust, air filter, carburettor.
Air Shifters: allowed.
Fuel: Pump fuel only. No nitrous, nitro or methanol allowed.
2. Suspension & Brakes
Brakes: Front and rear mandatory (disc or drum).
Suspension: Front suspension minimum size 27mm and minimum travel of 2 inches. Rear suspension not permitted.
3. FRAME
Frame: Must be purpose built and of tubular construction utilising a rigid rear end. Rider must be able to reach all controls safely and able to place both feet flat on the ground.
Ground Clearance: Minimum of 50 mm at the lowest point.
Wheelie Bars: Mandatory.
4. WHEELS AND TYRES
Tyres: Slicks are permitted, any make or size.
Wheels: Any make or size permitted.
5. BODY
Body: Must have rear mudguard or body work extending past the rear axle.
Seat: Must be securely attached so to prevent the rider from sliding backwards.
6. STARTING.
Electric, kick or off-board starters permitted. No push or roller starts.
7. RIDER.
Helmet: "Full face" refer to Helmet section of hand book.
Protective Clothing: One or two piece leather suits designed for motorcycle racing must be worn. Full finger leather gloves and Hi-top leather boots are also mandatory.
JUNIOR DRAG BIKE (JRB) CONSTRUCTION
National Sporting Code of the ACU and these Standing Regulations shall apply at all Drag Racing Meetings, together with the Supplementary Regulations and any final instructions.
1. ELIGIBILITY.
For 2002 no national competitions are planned. Track time will be given at selected events at Shakespeare County Raceway for setup and practise purposes. No competition licenses will be required.
2. SPECIFICATION OF MOTORCYCLE.
Motorcycles must comply with the Class rules and the requirements of the following Regulations.
3. BRAKES.
All machines must be equipped with at least one efficient brake per wheel, operating independently, and acting directly on the wheel. Hydraulic brakes may be fitted to any wheel, provided that the cylinders and lines are adequately protected from accidental damage. The hydraulic fluid reservoir must be mounted in such a position as to allow easy inspection of the fluid level. All disc brakes must be of the double calliper pattern, e.g. having brake pads on each side of the disc. Must be able to operate from normal riding position i.e. both hands on handlebars and feet on footrests.
4. TYRES.
The minimum cross section of tyre allowed for any class is 50mm. Dust caps must be fitted to all tyre valves. Any tyre which, in the opinion of the Scrutineer, bears any signs of having sidewall markings or lettering tampered with will be grounds for immediate exclusion of the rider from the event.
5. APPEARANCE.
All machines must be of presentable appearance at all times. Entries may be refused where appearance is not considered to be up to the general standards of competition.
6. PROTECTIVE CLOTHING.
Competitors must wear a complete leather suit of at least 1.2mm in thickness (on all parts of the suit), Two piece suits that zip together at the waist are acceptable, however all other of the General Technical Regulations must be complied with. Non-leather material may be used if it meets with the requirements laid down by the FIM. Bulky hard objects such as tools must not be carried in pockets or on the person.
7. HELMETS. Full face only. Please refer to helmet section of ACU hand book for full details.
8. CAPACITY RESTRICTIONS.
As per class rules.
9. CLASSES.
As per class rules.
10. DRAIN PLUGS.
All drain plugs securing any liquid must be so fitted as to prevent any leakage, and positively locked against loosening, with wire.
11. FUEL LINES.
Must be securely fitted at all joints and a quick action fuel tap must be within easy reach of the rider.
12. FUEL TANKS.
All fuel tanks must be securely fitted to the machine and incorporate securely fitting filler caps. Metal tanks must be robustly constructed. Non Metallic Fuel Tanks - Non metallic fuel tanks must carry an international standard mark for the purpose for which it is being used e.g S.F.I., I.S.O.
13. HANDLEBARS AND CONTROL LEVERS.
Any type or make of handlebar may be fitted at the owner's discretion. It is compulsory to fit lock stops to ensure a minimum clearance of 25mm between the handlebars and any other part of the machine, to prevent trapping of the rider's hands. The minimum angle of rotation either side of centre line or mid point is 20 degrees. Handlebar grips, if fitted, must be securely attached. It is recommended that all control levers be of the ball ended type. Once the engine is running a competitor should be able to engage or disengage gear without removing either hand from the handlebars.
14. OVERFLOWS.
All breathers must terminate in a catch can/tank of 550ml minimum capacity or vent into the exhaust if normally aspirated.
15. STREAMLINING.
There must be clearance of at least 20mm between the streamlining and the extremities of the handlebars or steering device, including any attachment thereto, whatever the position of the handlebars. It must not be possible for the front wheel to make contact with the streamlining whatever the position of the handlebars. The streamlining must be constructed of metal or other suitable material, and fitted to allow complete liberty of movement of the rider, both when riding and when getting on and off the machine, without the streamlining or any part of it having to be displaced. The screen, if fitted, must be constructed of Perspex or similar material.
16. THROTTLE LINKAGE.
All motorcycles must have the throttle controlled by a hand operated twistgrip, incorporating a positive acting spring attached directly to the carburettor throttle arm. The throttle must close automatically upon releasing the twistgrip.
17. ENGINE.
As per class rules.
18. IGNITION.
Any type or make of ignition system may be fitted. A positive acting cut out switch must be fitted, and attached to the top fork yoke or handlebars. Ignition KILL buttons are not acceptable. All machines must have a positive KILL switch attached to the rider by lanyard.
19. COMPUTERS.
Can be used for information gathering only. Throttle operation, shifting, clutch activation, control of fuel injection metering etc., are to be solely under the control of the rider.
20. FUEL PUMPS.
Any make of fuel pump may be fitted. If electrically operated, the pump must be connected to the ignition switch so that they are switched off with the ignition.
21. FOOTRESTS.
Unless original equipment is used, the footrests should be of 19mm diameter minimum and ball ended.
22. BATTERIES.
May be located at the owner's discretion, providing that the mounting is of sound construction.
23. NUMBERS.
Competitors should display their class and vehicle numbers to the rear and each side of the motorcycle, in numbers and letters at least 75mm high.
24. PRIMARY TRANSMISSION.
If the clutch and/or primary transmission is exposed it must be fitted with a guard as a safety measure to protect the rider even as a result of breakage. The guard must be conceived in such a manner that under no circumstances can the rider come into accidental contact with these transmission parts. It must be designed to protect the rider from injuring fingers. Outboard mounted clutches must have a cover of at least 3mm aluminium or 1 mm steel. Any suitable make or type of drive chain/belt may be installed.
25. FUELS.
For petrol-burning classes, the dielectric constant as per DC meter may be no greater than 4, and Propylene Oxide is prohibited. Octane boosters are permitted.
26. MEDICAL COVER.
At each Drag Race meeting there must be a minimum of one Doctor or Paramedic and one Ambulance present. If the Doctor or Paramedic has to leave the circuit, all racing must cease. All Paramedics must have personal malpractice indemnity cover. For definitions of Doctor, Paramedic, Ambulance and First Aid Personnel, please refer to the Medical Services Section within the ACU Road Race Yearbook. The minimum equipment requirements for an Ambulance are stated in the ACU Road Race Yearbook.
27. TRACK.
The safety precautions of tracks will be as laid down for each permanent course licence or temporary course certificate following an inspection of the course.
28. FIRE EXTINGUISHERS.
As per the Road Race Yearbook.
29. GROUND CLEARANCE.
Machines must have a minimum ground clearance of 50mm with the rider sitting on the bike with feet on the footrests and a maximum of 30 psi in the front tyre and 4 psi in the rear.
30. DRIVE CHAINS AND GUARDS.
Any suitable make or type of chain may be used, but must be adequately guarded. Guards manufactured from 3mm Dural (or equivalent strength alternative) must be fitted to prevent the chain contacting the rider as a result of breakage.
What is ET Racing?
DRAG racing is all about who reaches the finish line first.
However in some classes it's not about who has the fastest bike, this is ET racing.
In Junior Dragbike ET racing, a rider has to guess the time it will take there bike to travel the eighth mile; this is called the dial in time. This is then painted on the bike.
In the race, if you then run quicker than your dial in time you lose. If the other rider runs quicker than their dial in time, then whoever is closest to their time wins the race.
The whole point of ET racing is that you don't need the latest megabucks junior dragbike to win; it's all down to your skill as a rider.
To be successful in this sport you need to know your bike and have the skill to try and run as near to your time as possible, and to do that consistently.
This can all be irrelevant if you leave too early and trip the red light on the Christmas tree. When that green light glows you cannot react faster then 0.500 of a second, any quicker and the race is lost as you leave the line. Riders develop their own ways of reacting fast to the green and psyching out their opponent, maybe even force them into red lighting.
All this can lead to very exciting and close racing. To be a winner you need too refine your skills and know your bike. It's a lot of fun and you will be building up the skills needed to make it to the top in motorcycle drag racing. |
