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NZDRA Invite your comments on the proposed new rules below. Please note that this is not an opportunity to put forward new rules for other dragbike classes, but rather for constructive comments (only!) on rules for the two proposed classes as noted below. Subject to NZDRA vote on 10-May-08, these proposed rules will come into effect next season. Please e-mail your comments to NZDRA bike representative Tristan Scalmer. |
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Rules - /SB SPORTS BIKE Concept: This section is for naturally aspirated production sports motorcycles as supplied by the manufacturer. They may be modified to the limits described in the class requirements but must retain a stock appearance. Note: Class requirements must be read in conjunction with the General Racing Regulations 2.0 and Safety Regulations 5.0.
Class Requirement NZDRA Competition licence required. See Credentials 3.0. Turnaround- Must be capable of a 45 minute turnaround time. Timed from the last pairing.
Classes A/SB 1000cc and over B/SB 650cc to 999cc C/SB 250cc to 649cc
Engine Engine Any engine modifications permitted, provided OEM cylinder(s), cylinder head, and crankcase castings are retained. No engine swaps permitted Exhaust Aftermarket exhaust permitted. Ignition All -/SB must have a positive action on/off ignition switch within reach of the riders hands without removing them from the handlebars. Fuel Pump gas to a maximum of 98 RON permitted. No additives permitted. Fuel Shut Off Fuel shut off valve must be installed in fuel lines between the tank and carburettor(s). EFI engines may have an operating tip over sensor instead. Throttle Must have a spring loaded throttle return. Butterfly type carburettors must have two return springs fitted. Supercharging No supercharging, turbo charging, or Nitrous Oxide permitted.
Body and Chassis Appearance All machines must bear full street equipment including instruments, mudguards, wiring harness, etc. OEM headlight and tail light must be used and operative. Replacement of original instruments with aftermarket units permitted. Factory production fuel tank for model used is required. Rear view mirrors and indicators may be removed. Models that have a fairing and screen fitted standard must use them or replicas. Fairings may be trimmed for ground clearance, or to clear the exhaust. Screens must be thin and flexible for safety reasons (i.e polycarbonate). Replacement replica guards permitted. Upholstery Original seat base required. Trimming of seat to a minimum of 25mm at the front half of the seat is allowed. Ballast Any ballast, or unnecessarily heavy components on the bike, are not permitted. Frame No frame modifications permitted whatsoever.
Drive Train Chain guard Either stock chain guard, or one made from 5mm (minimum) aluminium, or 3mm (minimum) steel must be fitted. Transmission Automatic gearboxes are not permitted. Air or electric gear change devices are not permitted. Clutch Clutch must be of original type for engine used, but springs and friction plates may be substituted. No centrifugal assistance is permitted, and no means of delaying clutch engagement may be used. Wheels and Tyres DOT rated motorcycle tyres with minimum tread depth of 1.0mm required. Slicks and tyres marked Not for highway use not permitted. |Up to 210 kph Motorcycles Must use a minimum of H rated tyres. 210 to 260 kph Motorcycles Must use a minimum of V rated tyres. Over 260 kph Motorcycles Must use a minimum of Z rated tyres. Standard wheels for model used permitted. Aftermarket wheels produced specifically for motorcycles permitted. Minimum diameter 17.
Suspension Brakes Stock front and rear operative brakes required as a minimum.
Suspension Lowering
permitted but must retain a minimum of 25mm downward suspension travel front
and rear. External straps or devices used to limit fork extension must be
recognizable as fit for purpose. No metallic tie rods to be used. Swing arm must be stock length (pivot centre to rear axle centre at maximum length setting) Wheelie Bars Not permitted.
Rider Safety / Support Helmet Mandatory.. Must have visor or shatter proof goggles. See Safety Regulations 5.57. Protective Clothing All riders of bikes capable of less than 120 mph Minimum of leather motorcycle jacket and leather pants. Heavy trousers are acceptable in lieu of leather pants. All riders of bikes capable of exceeding 120 mph Mandatory purpose made motorcycle leathers, leather gloves and boots of at least 200mm leg height. Back Protector mandatory for bikes capable of exceeding 150 mph. Tow Vehicles Not permitted.
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Rules - /PMA Pro Motorcycle Altered PMO Pro Motorcycle Outlaw
Concept: This section is for specially built machines, representing the highest form of stock based appearing motorcycles. Replica tank, seat, guards etc permitted. There is a choice of two different bike configurations: 1 - Maximum of 72 wheelbase and up to 10 rear tyre with wheelie bars. (PMA) 2 - Maximum of 75 wheelbase and up to 7 rear tyre with no wheelie bars (PMO). machines Note: Class requirements must be read in conjunction with the General Racing Regulations 2.0 and Safety Regulations 5.0. Class Requirement NZDRA Competition licence required. See Credentials 3.0. Turnaround- Must be capable of a 45 minute turnaround time. Timed from the last pairing.
Classes AA/PMA 1000cc and over supercharged with wheelie bars AA/PMO 1000cc and over supercharged with no wheelie bars A/PMA 1000cc and over naturally aspirated with wheelie bars A/PMO 1000cc and over naturally aspirated with no wheelie bars BB/PMA 650cc to 999cc and over supercharged with wheelie bars BB/PMO 650cc to 999cc and over supercharged with no wheelie bars B/PMA 650cc to 999cc and over naturally aspirated with wheelie bars B/PMO 650cc to 999cc and over naturally aspirated with no wheelie bars CC/PMA 250cc to 649cc and over supercharged with wheelie bars CC/PMO 250cc to 649cc and over supercharged with no wheelie bars C/PMA 250cc to 649cc and over naturally aspirated with wheelie bars C/PMO 250cc to 649cc and over naturally aspirated with no wheelie bars
Engine Carburettor / injection butterfly type carburettors or injection must be fitted with push pull type throttle cable actuation and two return springs Engine Any engine modifications permitted, engine swaps permitted provided replacement is from the same manufacturer as the original and is of the same configuration and series. Exhaust Any exhaust system permitted. Fuel Any fuel permitted with the exception of nitro methane. Fuel Shut Off Fuel shut off valve must be installed in fuel lines between the tank and carburettor(s). EFI engines may have an operating tip over sensor instead. Throttle Must have a spring loaded throttle return. Butterfly type carburettors must have two return springs fitted. Supercharging Any form of mechanical supercharging, turbo charging, or Nitrous Oxide permitted.
Frame Chain guard Either stock chain guard, or on made from 5mm (minimum) aluminium, or 3mm (minimum) steel must be fitted. Must cover top run of chain and extend to vertical tangent from rear of sprocket.
Foot pegs Foot pegs and foot controls may be lowered and / or rear set.
Steel tube frames- Engine cradle must be stock. Onus of proof on entrant. On frames using multiple tubes behind the head stem the uppermost tube may be replaced with a section of larger diameter for use as a fuel tank or breather tank.
Frame modification for clearance of ancillary components (eg fuel injection, carbs, fuel tank etc permitted material moved does not detract from the strength or street appearance of the machine and is not removed or relocated for purposes of weight redistribution. Wheel base may be increased to a maximum of 72 for bikes fitted with wheelie bars or 75 if not. Steering head may be raked to any angle taking into account the above rule for wheelbase.
It is mandatory that the angle of rake ( the angle between the steering head and a vertical line through the steering head) should not be decreased from stock as this reduces trail which may cause instability.
Swing arms may be lengthened or modified provided the basic street appearance is maintained. Fully welded back halve conversions are allowed for the fitment of wider rear tyres. Suspension dampener units may be replaced with bolted or welded struts.
Aluminium Alloy frames- Duplex cradle type frames must retain stock cradle, Perimeter type frames must be stock with the exception of the rear sub frame. Onus of proof on entrant.
Minor frame modification for clearance of ancillary components (eg fuel injection, carbs, fuel tank etc permitted material moved does not detract from the strength or street appearance of the machine and is not removed or relocated for purposes of weight redistribution. Wheel base may be increased to a maximum of 72 for bikes fitted with wheelie bars or 75 if not. Cast alloy type steering heads may be not be raked
It is mandatotry that the angle of rake ( the angle between the steering head and a vertical line through the steering head) should not be decreased from stock as this reduces trail which may cause instability.
Swing arms may be lengthened or modified provided the basic street appearance is maintained. Swing arm pivot point must be retained and swing arms must not be welded to the frame. Suspension dampener units may be replaced with bolted struts and linkages may be replaced with suitable replacements for the purpose of lowering.
Ground clearance Minimum of 50mm with rider seated on machine.
Guards Rear wheel guard or road racing type seat required. Exposed flywheels or pulleys must be fitted with a guard to prevent riders legs or body from coming into contact with it in any circumstances.
Handlebars Must be mounted in stock location, clip on bars allowed only where factory original.
Steering Steering damper highly recommended.
Bodywork fairings not permitted unless factory original, may be reproduced in fibreglass etc but must retain original appearance. Models that have a fairing and screen fitted as standard must use them or replicas. Fairings may be trimmed for ground clearance, or to clear the exhaust. Screens must be thin and flexible for safety reasons (i.e polycarbonate). Front and rear lights must be fitted and in stock location but may be cosmetic only.
Suspension (front and rear) Front forks may be extended a maximum of 300mm. No bolt on extensions permitted. Machines running as PMO may have forks shortened but must retain 25mm of travel. External straps or devices used to limit fork extension must be recognizable as fit for purpose. No metallic tie rods to be used. Fork assembly may be exchanged for another non-rigid type assembly, which may be of sufficient size, strength and length to adequately support machine and rider for normal street riding. Minimum fork diameter of 30mm. Fork bracing is compulsory on all bikes known to be capable of exceeding 130mph. Steel or steel reinforced non metallic guards are acceptable as fork bracing.
Steering dampers are highly recommended and must be fitted if directed by stewards after experiencing high speed instability.
Wheels and Tyres Slicks permitted. All tyres on motorcycles will be visually checked for condition, pressure, etc and must be considered safe by the scrutineer prior to any runs by the motorcycle. |Up to 210 kph Motorcycles Must use a minimum of H rated tyres. 210 to 260 kph Motorcycles Must use a minimum of V rated tyres. Over 260 kph Motorcycles Must use a minimum of Z rated tyres. Motorcycle racing tyres clearly marked for racing purpose only will be accepted.
Wheelie Bars Permitted but then must run as PMA. May be adjustable, but must be fixed during the run. Any movement or adjustment during run prohibited. Wheelie bars wheels must spin freely on start line. Preloading prohibited, no metallic wheels allowed.
Wheels Must be automotive type wheels suitable for use, all spoke holes in rim and hub must be properly cross laced to provide maximum strength.
Rider Safety / Support Brakes Must be fitted with operative brakes front and rear Helmet Mandatory.. Must have visor or shatter proof goggles. See Safety Regulations 5.57. Protective Clothing All riders of bikes capable of less than 120 mph Minimum of leather motorcycle jacket and leather pants. Heavy trousers are acceptable in lieu of leather pants.
All riders of bikes capable of exceeding 120 mph Mandatory purpose made motorcycle leathers, leather gloves and boots of at least 200mm leg height. Back Protector mandatory for bikes capable of exceeding 150 mph. Tow Vehicles Permitted. See general racing regulation 2.22 & 2.26
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NZDRA Invite your comments on the proposed new rules above. Please note that this is not an opportunity to put forward new rules for other dragbike classes, but rather for constructive comments (only!) on rules for the two proposed classes as noted above. Subject to NZDRA vote on 10-May-08, these proposed rules will come into effect next season. Please e-mail your comments to NZDRA bike representative Tristan Scalmer.
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No animals were harmed during the making of this page |