Autumn APS Classic at Hampton Downs

2025 Autumn APS Classic at Hampton Downs Supplementary Regulations

EVENT-SPECIFIC RULES

1. ORGANISER: The meeting is organised by the New Zealand Classic Motorcycle Racing Register Inc. under Motorcycling New Zealand Permit no. TBC and in conjunction with any current Hampton Downs/Government requirements.
2. RULES: The meeting will be conducted under the Manual of Motorcycle Sport of MNZ, the Technical Rules pertaining to the Classic Register and these Supplementary Regulations.
3. REFUSAL OF ENTRY: Organisers reserve the right to accept or decline any entry into any class.
4. ENTRY FEES: Entry fees are as follows;
   1. $310 for Seniors of MNZ Affiliated Clubs
   2. $250 for current NZCMRR members
   3. Free for Junior riders (under 18s). Must be an NZCMRR member
   4. $125 for NZCMRR member South Island entrants
   5. $185 for non-NZCMRR member South Island entrants
5. ENTRY PROCESS: Entries will be opened on the 1^st of April 2025. Entries will close exactly one week before the start of the event. After that date if extenuating circumstances deemed sufficient prevented a member from entering, late entries may only be accepted at the discretion of the Race Secretary. Any entries received outside of the open-entry window will not be included in the printed programme. All entries are to be completed online – postal entries will not be accepted. There will be no availability for entries on the day. If there is difficulty completing and paying online, the race secretary can be contacted at race@nzcmrr.com. Race groups will be capped at 40 entries.
6. OVERSUBSCRIBED GRIDS: Race Group Entries will be capped at the first 40 entries received. For any race groups where more than 40 entries occur, entry will be granted on a first-come first-serve basis. Any additional entries above 40 will be notified about their field being oversubscribed, and will be given the option of being waitlisted. Groups that are sufficiently oversubscribed may be split at the discretion of the race secretary and run as an “A” and “B” dependent on lap times.
7. WAITLISTED ENTRANTS: Waitlisted entrants must pay the full entry fee. If any other entrant withdraws from the oversubscribed group before the event, the waitlisted entrant will then take their place, vacancies being awarded again on the basis of the time the entry was submitted (first-come first-serve). If a grid is still oversubscribed at the point of the event, any waitlisted entrants will be allowed to run with the Regularity class in Group 3 until such a time as a space becomes available. Waitlisted riders must achieve a qualifying time in the waitlisted qualifying group(s) to allow the Steward to make a decision about a safe place to allow them to start on the grid. Partial refunds for waitlisted entrants will be decided as follows at the discretion of the race secretary;
   1. If a waitlisted rider fills a vacancy on the Saturday, then they are not eligible for any refund.
   2. If a waitlisted rider fills a vacancy on the Sunday and ran Regularity only on the Saturday, they will be refunded $50.
   3. If a vacancy is not available for a waitlisted rider before the conclusion of the event, then they will be refunded the difference between their entry and the standard Regularity entry price.
8. ENTRANTS YIELDING THEIR SPOT ON OVERSUBSCRIBED GRIDS DUE TO MACHINE FAILURE: Where a field is oversubscribed and the race event is underway, any entrant that withdraws due to machine failure and yields their spot to an entrant on the wait list may qualify for a partial refund at the discretion of the Race Secretary. Factors considered will include whether there is someone to replace them, and how far through the event they withdraw, and whether they are running in other classes.
9. LICENCE: An MNZ competition licence is compulsory. One-event MNZ licences can be pre-purchased with your entry. On-the-day purchases of one-event licenses may incur a surcharge at the discretion of the Race Secretary, and will only be available in limited numbers.
10. CLUB MEMBERSHIP: Membership of an MNZ affiliated club is compulsory. Current NZCMRR members do not need to show proof of membership as evidence will be supplied to the Steward on your behalf, however non-members must provide proof of membership with their license. If a non-member is unable to provide proof of membership of another MNZ affiliate club, they must then purchase an NZCMRR membership in the Race Office.
11. INTERNATIONAL COMPETITORS: International competitors will only be able to run at this event if they yield their national license and obtain an MNZ license.
12. RACE NUMBERS: Race numbers are allocated to members of the club exclusively by the club, and exclusive to each person. You must race with the number that has been allocated to you. The organisers reserve the right to disallow access to the track if the numbers on an entrant’s machine do not match what has been assigned. Numbers allocated by MNZ are not recognised at NZCMRR events and NZCMRR member numbers take precedence.
13. SOLO MACHINE EXAMINATION: All machines entered are to pass a bike check system prior to going out on track. Bike Check times will be conveyed in the official programme. Solo machines will be checked to the below list;
    24. The Motorcycle is presented to the examiner in a clean and well-prepared condition in keeping with the aim of the Register. Refer NZCMRR rule 24.
    25. Clear numbers on motorcycle – no stickers on front number board, or screen.
    26. Secure number boards - not cracked or loose
    27. Handle bar levers must have ball ends, and perch must be sufficiently clamped to the handlebars
    28. Handle bars must be secure with the ends capped
    29. Bar grips must not be loose – these must be glued or lock-wired
    30. Throttle return - smooth and closes fully with sufficient pressure
    31. Steering lock - doesn't return to tank/frame/fairing/steering damper limits
    32. Steering head bearings/wheel/swingarm bearings are serviceable and adjusted
    33. Front and rear brakes - operational and all anchor points and actuating devices have locking method (i.e. double nuts, nyloc nuts, lock wire, clevis pin, etc.)
    34. Exhaust and muffler is secure
    35. Oil/coolant breather pipes/overflows feed to catch bottle or airbox, and catch bottles are of an adequate size
    36. Drain plugs/external oil filter (if fitted)/pressurised plugs/detent plugs/radiator cap/filler plugs wired or suitably locked
    37. A 3mm rounded edge or beading is present on fairing blade edges
    38. All wheels have tyre caps fitted to valves
    39. Fairings are secure
    40. Footpegs and foot controls are secure
    41. No broken or loose spokes
    42. Suspension (free movement, front and rear if applicable)
    43. Check chain joining link direction - must be fitted facing away from chain direction
14. SIDECAR MACHINE EXAMINATION: All machines entered are to pass a bike check system prior to going out on track. Bike Check times will be conveyed in the official programme. Sidecars will be checked to the below list;
    24. The machine is presented to the examiner in a clean and well-prepared condition in keeping with the aim of the Register. Refer NZCMRR rule 24.
    25. Clear numbers on sidecar – no previous scrutineering stickers on number board or screen
    26. Secure number boards - not cracked or loose
    27. Handle bar levers must have ball ends, and perch is sufficiently clamped to the handlebars
    28. Handle bars secure and ends capped
    29. Bar grips are not loose - must be glued or lock-wired
    30. Throttle return - smooth and closes fully with sufficient pressure
    31. Steering lock - doesn't return to tank/frame/fairing/steering damper limits
    32. Steering head bearings/wheel bearings operational, properly adjusted and smooth
    33. Front and rear brakes - operational and all anchor points and actuating devices have locking method (i.e. double nuts, nyloc nuts, lock wire, clevis pin, etc.)
    34. If fitted, linked hydraulic brakes have a properly adjusted positive return stop on the foot lever (This prevents the circlip from popping out the back of the master cylinder which would result in loss of fluid and a brake failure). If fitted with a linked system there is provision to operate one front disc. Ensure both systems work independent of each other.
    35. Exhaust and muffler secure
    36. Oil/coolant breather pipes/overflows feed to catch bottle or airbox, and catch bottles adequate size.
    37. Sidecar is fitted with a belly pan which encompasses the entire engine and gearbox, with an oil absorbent material in it. Ensure that the belly pan is attached securely. Ensure any oil filter housings and oil cooler radiators and their oil lines are securely mounted, especially if mounted outside the belly pan area.
    38. Drain plugs/external oil filter (if fitted)/pressurised plugs/detent plugs/radiator cap/filler plugs wired or suitably locked. Oil filter housings (if fitted), oil coolers (if fitted), and oil lines securely mounted.
    39. (If fitted) Differential filler, level, and drain plugs lock wired.
    40. A 3mm rounded edge or beading is present on fairing blade edges.
    41. Fairings and guards are secure
    42. Footpegs and foot controls are secure
    43. No broken or loose spokes (if applicable), and all wheels have tyre caps fitted to valves
    44. Suspension (free movement, front and rear if applicable)
    45. Check chain joining link direction - must be fitted facing away from chain direction (if applicable)
    46. ID tag matches logbook, two yearly WOF current, any repairs (refer logbook) properly carried out.
    47. Side wheel bearings smooth and properly adjusted (not rumbling/loose) and tyre tread depth sufficient
    48. No obvious cracks in chassis; special attention to be given to front tubing and steering head
    49. Both the handlebar kill switch and separate tether switch (attached to the rider’s wrist or body) are present and working independent of each other.
    50. Passenger handles are firm and attached correctly. These require at least a 50mm washer under fibreglass if attached to the fairing.
15. RESPONSIBILITIES OF A BIKE CHECKER: A Bike Checker must be deemed to be sufficiently qualified by the Head Bike Checker. The listed checks, but not limited to, must be performed on each motorcycle/sidecar. By initialling and passing a machine on the list of “entered machines” the Bike Checker is confirming that all these checks have been conducted, and that the machine is in outwardly satisfactory condition suitable for racing at the event. If any doubt remains, the machine should not be passed. However this does not guarantee that a machine will not fail, nor does it guarantee that the machine will remain in this condition for the duration of the meeting. Rather, it confirms that obvious points have been checked and that the machine, at the time it was checked, met the listed basic requirements. Moreover, passing a machine does not mean the Bike Checker is liable for machine failure due to improper preparation or poor workmanship. New Bike Checkers unfamiliar with the NZCMRR Bike-Check process must use the ‘Bike Check Form’ and fill a form individually for each bike.
16. REINSPECTION OF MACHINES: A machine involved in any crash must be inspected before being allowed back out on track. The recovery vehicle must remove any Bike Check sticker from a machine that has been crashed before returning it to the entrant or their crew. In the event that a rider of a crashed machine is being treated by ambulance staff, Bike Check stickers must remain on the damaged machine and the machine in the custody of officials until such time as it is released by the Clerk of the Course or the Steward. The Bike must then be run through the Bike Check process again before being awarded another Bike Check sticker.
17. BREACH OF TECHNICAL RULES: In the event of a protested machine, organisers reserve the right to check machine eligibility at any time. This may include an engine tear down to check engine capacity. This will be at the competitor’s expense if found to be in breach of any rules. Organisers decision on this will be final.
18. RIDER’S BRIEFING: Rider’s briefing and welcome is to be given by the President of the Club in conjunction with MNZ officials. The President and officials will agree beforehand on the content of the verbal briefing. Rider’s briefing notes will be distributed to entrants before the meeting, and will also be available at sign-on.
19. RACE GROUPS AND ORDER: Race groups and order is subject to change at the discretion of officials and the Race Secretary however planned and preferred grouping and order is as follows;
    1. GROUP 1: 351-500cc - Pre '63 500 Clubman’s, Pre '63 500 Factory Racing, Pre '63 500 Modified, Classic 70's 500 (4 laps)
    2. GROUP 2: Post Classic - P82 Senior, P89 F1, P95 Superbike, P95 F1 (6 laps)
    3. GROUP 3: Vintage & Pre War - Pre '31 Vintage, Pre '46 350, Pre '46 500, 0-250cc - Pre '63 250 Clubman’s, Pre '63 250 Factory Racing, Pre '63 250 Modified, Classic 70's 250, Pre ’82 Ultralightweight (4 laps)
    4. GROUP 4: Post Classic - P89 F2, P95 F2 (6 laps)
    5. GROUP 5: Sidecars - Pre '63, Classic 70's, Pre '82 (4 laps)
    6. GROUP 6: Post Classic - P82 Junior, P89 F3. P95 F3 (6 laps)
    7. GROUP 7: 501cc-Open - Pre '63 Open Modified, Classic 70's Open (4 laps)
    8. GROUP 8: 251-350cc - Pre '63 350 Clubmans, Pre '63 350 Factory Racing, Pre '63 350 Modified, Classic 70's 350 (4 laps)
    9. GROUP 9: Regularity (4 laps)
20. PRACTICE/QUALIFYING: All practice and qualifying is to take place on the first round of the Saturday. Qualifying will be run in race groups, with an extra group(s) (if and as necessary) called “waitlisted” for all waitlisted riders to get a qualifying time. Each qualifying session will be 10 minutes in duration. Dependent on the number of waitlisted riders, multiple groups may be required at the discretion of the Race Secretary who will communicate this prior to the meeting. Waitlisted entrants will only be allowed one opportunity to qualify.
21. FAILURE TO QUALIFY: In most cases this will result in a rider not being allowed to run. Refunds may be given at the discretion of the Race Secretary and Committee to be decided after the conclusion of the event. If extenuating circumstances are considered to have resulted in a rider’s inability to qualify and the Race Secretary deem them to be reasonable, they as a representative of the Club may choose to elevate this to the Steward who holds final authority to make a decision regarding the establishment of a safe grid and may wish to consider seeding a rider based on lap times.
22. MACHINE TESTING SESSION: In the instance where multiple entrants have completed repairs on machines and require testing prior to the commencement of racing on the Sunday, and they communicate this to the Race Secretary, at the discretion of the Race Secretary and MNZ officials a machine testing session of not more than four laps may be run as a first event at the start of each day of racing. Sufficient reason must be given for the need to run in this event and entrants who wish to utilise this session must communicate this to the Race Secretary in advance.
23. CHAMPIONSHIP RACE ROUNDS: All championship rounds are to be 4 laps for Classic bikes, and 6 laps for Postclassic bikes. A warm-up/sighting lap may be run at the discretion of the Clerk of the Course or Steward for the first race round if deemed necessary or at any other point where track conditions may have changed. This is to be communicated by an additional rider’s briefing as necessary.
24. REGULARITY: Regularity will not be run at this event; those who wish to run but are aware of being excessively slow can be placed into group 3 if they contact the race secretary prior to the event.
25. EXITING PIT LANE: Competitors shall only exit the pits to the circuit under the control of the Pitlane official and via the pit lane exit only. Competitors found to be riding the wrong way along Pit Lane may be fined or excluded from the meeting.
26. ENTERING PIT LANE: Entry to the Pit Lane is on the right-hand side on the final corner before the front straight. Competitors must move to the far right of the circuit to move beyond the blend line, and reduce speed and signal their intentions to leave the track without impeding other competitors in the process. Once committed to entering pit-lane and a competitor has crossed to the inside of the entry blend lines, that competitor MUST enter Pit Lane. The pit lane entry will always be used at this event to exit the track. Under no circumstances should a rider cut across the track to the exit without signalling well in advance. Riders found to be doing so may be subject to sanction/fine at the discretion of MNZ officials which may also include exclusion from the meeting.
27. PRE-RACE PROCEDURE: The Clerk of the Course will give a 5 and 2 minute call before each race, signalling the time before pit exit will be opened. Competitors must make their way to the staging area by pit exit. Competitors must move forward of the sign on pitlane so that the track entry marshal can inspect bikes for bike check stickers, and competitors for strapped helmets and back and chest protectors. In the case that a race is called off before bikes are allowed out on track while they are situated at the staging area, the track entry marshals are to direct all waiting bikes to return along the road behind the garages to their pits. Exactly 5 minutes after the 5 minute call and 2 minutes after the 2 minute call the track entry gate will open (subject to track conditions) for exactly 30 seconds. Any competitors arriving after this time must start from track entry at the direction of the track entry marshal after the entire field has passed track entry.
28. GRID MARKING: The grid is to be marked using the following process;
    1. For NZCMRR events, the grid must be staggered, and angled. The angle of each row should result in the fourth bike being two metres behind the first bike on the same row. Each row should be staggered such that each bike has a clear space directly ahead of it in the row directly in front. The orange dots present on the track at Manfeild will NOT be used. The Club will ensure that its grid meets minimum MNZ specifications with a distance of 4 metres between rows.
    2. The marks must be made using a removable medium which can readily be washed off after the conclusion of the meeting. Each grid location must be marked with an arrow in the direction of travel (^) , and directly below it the number of the grid position. When a bike starts the race, the position is the tip of the arrow and the wheel must be positioned within it.
    3. Signs for each row will also be placed on the inside of the track pinned to the grass. The signs used must be triangular in shape, made of corflute, and with concealed small pins to minimise the risk of injury should a competitor collide with one.
29. GRID POSITIONS: Grid positions will be allocated after the completion of the qualifying rounds. Any changes to grids over the course of the weekend where vacancies are filled by waitlisted riders will be communicated to riders before the next race. The onus is on the rider to remember their transponder, and cross the start finish line at least twice to register a qualifying time and obtain a grid position. The grid positions/layout plan will be displayed with the timing results in the sign-on room after practice/qualifying and will be available online on MarkTime. A 20 second penalty will be applied to anyone found to be lining up at the start, in someone else's grid position. A marshal will be on track when bikes are gridding up to help ensure competitors are in the correct locations.
30. RED FLAG PROCEDURE: Under RED FLAG conditions all riders must proceed around the track to pit exit. UNDER NO CIRCUMSTANCE SHOULD A RIDER CUT ACROSS THE TRACK TO PIT ENTRY. If a race is red flagged riders should proceed back to their pits to await further instruction. Standard operating procedure shall be that the next race group is called and the red-flagged group assigned a re-run position as soon as practical in the programme.
31. NOISE EMISSION: Circuit noise regulations as provided for under Rule 10-6d. All machines are to be effectively silenced so as not to exceed 95dB(A) "ride by" measured by the official meter mounted 30m from the track centre line. Machines registering consistently in excess of the limit will be brought to the attention of the officials for action to be taken as follows: Exceeding 95 but not exceeding 98dB(A): On the first offence during the meeting the rider will be warned that this has occurred and instructed to rectify the situation. For second and subsequent infringements the machine will be black flagged from the race or practice without further warning. Exceeding 98dB(A): The machine will be black flagged from the race or practice without warning. If circumstances don’t allow the machine to be black flagged, the competitor may then be excluded from the results of that practice or race. During the course of the event the club will endeavour to post lists of machines and their noise readings to assist competitor’s efforts in complying with these limits.
32. RIDING BEHAVIOUR: Further to MNZ rule 6.13 and 6.15(a) - Careless riding. Any competitor riding in a manner that endangers and/or causes disruption to another competitor (or competitors) shall, at the discretion of the Clerk of Course and/or Steward, be shown the black flag and the guilty competitor disqualified from that session/race. If the incident is deemed serious enough by the Clerk of Course and/or Steward, further action can be taken against the guilty competitor by means of ejection from the meeting. If this process is invoked, entry fees paid by the competitor concerned will not be refunded, and their race licence may be held by the race organiser and/or MNZ for further investigation.
33. ENTRANT AND PIT CREW OFF-TRACK BEHAVIOUR: Entrants are deemed to be responsible for the conduct of their pit crew. If the behaviour of any pit crew or entrants is deemed to be unacceptable, club officials will apply applicable sanctions to the rider which may include the ejection of the concerned entrant from the meeting immediately. If this process is invoked, any entry fees paid by the competitor concerned will not be refunded. The club also reserves the right to exclude person(s) from any future NZCMRR events. Behaviour that will trigger sanction from an NZCMRR meeting includes; (1) threatening or abusive language or behaviour toward anyone including Officials, riders, or volunteers, and (2) refusal or failure to comply with the reasonable request, order, or instruction of an Official.
34. TRANSPONDERS: All transponders will be supplied by the club free-of-charge. No competitor is to use a personal transponder at this meeting. Transponders will be handed out at sign-on, and must be returned in order to receive their license.
35. REFUNDS: Prior to the meeting, any entrant will be given a refund on his/her entry fee if for any reason attendance over the weekend is not possible. If a withdrawal is notified within 1 week of the event, refunds will be processed after the completion of the event. Notification of withdrawal is required in writing or email to the Race Secretary prior to the event. If an entrant fails to notify the Race Secretary until after the closing of sign-on, refunds will only be granted at the discretion of the Committee and Race Secretary.
36. ANIMALS: No dogs or pets are allowed at the meeting. No Exceptions.
37. ALCOHOL/SMOKING/VAPING: No alcohol, smoking or vaping in the pits before the conclusion of racing events for the day.
38. FIRE EXTINGUISHERS AND TEST AND TAGS: All Competitors are to have a Fire Extinguisher of at least 1kg in their pit and all Electrical goods must have a current ‘Electrically Safe’ test tag.
39. PIT MOVEMENTS: The pit speed limit is 15km/h. Club Officials reserve the right to enforce a penalty on any entrant that fails to follow this system or is seen to be endangering public. Penalties will be awarded at the discretion of the Race Secretary, and possible penalties include possible expulsion from the event with no refund, or removal of points for the round.
40. PIT ALLOCATIONS: Open pits will not be allocated at this event. Garages will be allocated, and must be paid in full before the event unless other arrangements have been agreed upon at the discretion of the Race Secretary. Officials will be present to help direct entrants as needed.
41. CHIEF PIT MARSHAL: At this event there is to be a Chief Pit Marshal who reports directly to the Clerk of the Course and Race Committee. The responsibilities of the Chief Pit Marshal include;
    1. Oversee the allocation, hand-out, and management of club assets, work with the chief flag marshal to ensure that the needs of the track and pitlane marshals are met, manage assets required for post-racing events, and oversee the operation of the pits.
    2. Roles reporting directly to the Chief Pit Marshal include;
       1. Any person(s) changing signs for race groups. They need to ensure that all of the race group signs are changed at the point of 5-minute call.
    3. Oversee the collection and return of any club assets from all marshals. Radios must be collected and recharged at the end of each day. It is the Chief Pit Marshal’s responsibility to ensure that all gear is returned at the end of the meeting, and any damage recorded and reported to the Club.
    4. The Chief Pit Marshal is also given power to ensure safe operation within the pits; hazardous behaviour of either public or competitors can be addressed directly, but must always be reported to the Race Committee or MNZ officials. Any safety risks that are identified must also be brought to the attention of any present Club or MNZ officials to address as they see fit.
    5. To manage assets required for post-racing events including BBQs and prize-giving. Working with club officials they must ensure that there is sufficient food and facility to conduct these events. The Chief Pit Marshal can also appoint another person to help facilitate any of the above tasks.
42. EXCEEDING TRACK LIMITS: All competitors will remain within the track lines when moving through the chicane and onto the back straight. Any rider that is observed to be consistently exceeding the track limits, will be given a time penalty which will be determined by the number of times the rider exceeds the track limits within their race. All decisions regarding penalty will be at the discretion of race officials as per MNZ Rule 7.4.1.

Technical Rules

Note: Last revised: 1st September 2020. If a member is intending to build a machine for NZCMRR events and are not sure of any eligibility requirement they can contact the NZCMRR technical committee. Post Classic classes are covered in the Road Racing Post Classic chapter of the MNZ Manual of Motorcycle Sport, click here to read.

• AIMS AND OBJECTIVES.The Register is dedicated to the preservation and use of Classic and Historic Road Racing Motorcycles. These rules are intended to ensure a high standard of authenticity and presentation. All machines must conform to NZCMRR Technical Rules. The Committee reserves the right to accept, or reject any machine which does not meet the standards in keeping with the aims of the Register and the spirit of the classic movement. Any doubts or queries regarding eligibility should be addressed to the Technical Committee of the register.
• Motorcycles which are eligible are those of a model built prior to 1995. No speedway machines will be accepted. Types will be defined by:
  1982. Age:Vintage (pre 1931), Pre War (pre 1946), Classic (pre 1963), NZCMRR Classic ‘70’s (pre 1972 or 1976) and Post Classics (Pre 1982, 1989 and 1995).
        Sidecars Classic pre 1963, Classic ‘70s, and Post Classic pre 1982.
  1983. Capacity:Up to 250cc, up to 350cc, up to 500cc and Open (up to1300cc or 750cc. See Pre War rule 16e) Refer to Rule 14.
  1984. Group:Vintage Class, Pre-War Class, Clubmans Class, Factory Built Racing Class, Modified Class, Classic '70s, Post Classic F1, F2 & F3 classes and Sidecar Classes.
  1985. The committee reserves the right to run whatever combination of classes it deems suitable for any particular event or championship.
• MAJOR COMPONENTS.These will determine age. These are frame and swingarm, engine, fork assembly, gearbox, hubs, brakes, carburettors. No major Japanese components will be accepted in pre 1963 classes.
• Must be of the same era as fitted as original equipment. Amal Mk 1 Concentric carburettors will be allowed in post war classes if original types are not available. No flat side carburettors in pre 1963 classes.
• NO transistorised, CDI or pointless systems will be accepted in any pre 1963 machine classes, except in pre 1963 Factory Built Racing Machine Class and pre 1963 Modified Class, including sidecars, provided that the original pre 1963 external appearance is maintained. Post Classic Classes are unrestricted.
• On all pre 1963 machines, wheels must be of the wire-spoked type and have maximum rim width of 2.15" inside width (MW3). For Modified Class pre 1963 and Post Classic Modified Class, see rules 19 or 20. For Sidecar class see rules 21 or 22.
• Must be of the type manufactured with tread. Slick tyres or hand cut slicks are not permitted. The use of tyre warmers is prohibited.
• On pre 1963 machines drum brakes only are permitted. Refer to various Classes for eligibility.
• CLASS ELIGIBILITY. In classes where eligibility is determined by the age of the motorcycle, the year of original availability of the most recently made component (see rule 3 & 11) will determine the class in which it will race.
• Any modifications must be of a type and style in keeping with the class. Modifications deemed outside these requirements will result in the machine being placed in a later or different class.
• REPLICA PARTS. Replica components may be used in any proportions provided that they are faithful reproductions of acceptable original components and are not designed to gain a performance advantage. No carbon fibre or Kevlar components accepted.
• NUMBER PLATES.All machines must have three (3) clearly written numbers which are allocated by the Race Number Registrar before an event. At the discretion of the Race Number Registrar, numbers will be allocated to members for essentially permanent usage. Any member who remains unfinancial after one year will lose his/her discretionary right to retain such a number, that number being placed back in the pool for redistribution as required. The Register reserves the right to re-allocate a race number which has not been used in the last 2 years. The number plates must be 10" (25.4cm) minimum and 11" (28cm) maximum, round or oval, fitted to the front of the machine and to each side, clearly visible with the rider seated in his riding position. The outline of the number is to be not less than 1" (2.54cm) in width and as tall as practicable. Paint used is to be flat (non-gloss) type and colours to be in accordance with the colour code below:
  1. Up to 250cc - Dark green background, white figures.
  2. Up to 350cc - Dark blue background, white figures.
  3. Up to 500cc - Yellow background, black figures.
  4. Over 500cc - Red background, white figures.
  5. Vintage Machines - all capacities - Black background, white figures.
• Exhaust mufflers are mandatory as per MNZ rule. A static or ride-by noise test may be required at some circuits.
• ENGINE CAPACITY LIMITS. For engines which retain the manufacturer's bore and stroke, the maximum allowable overbore is 0.060" (1.5mm). For engines with a non-standard bore and stroke the engine capacity must always remain below the nominal maximum for the class entered. i.e. 350cc or 500cc.
• VINTAGE CLASS.To cater for machines from the pioneering days of motorcycling:
  1931. Motorcycles that are eligible are those of a model built before 1931.
  1932. Machines must not have positive stop gear change.
  1933. Machines must have pre 1931 major components (see rule 3).
  1934. Machines are to be in racing trim.
  1935. Open (to MNZ rule) - Alcohol permitted.
  1936. Flat slide Brown & Barlow carburettors permitted.
  1937. Machines must not have hydraulic steering dampers.
  1938. Machines must not have hydraulic suspension dampers.
  1939. Machines must have ignition systems available within the period.
  1940. The gearbox must have no more than four speeds.
  1941. Machine must have a maximum of one carburettor per cylinder with a maximum choke size not greater than 1 ¼ inches (32mm) diameter unless fitted to the model as original equipment.
  1942. Number plates for Vintage Machines, all capacities - black background, white figures.
• PRE WAR CLASS.For machines of a type built before 1946.
  1. Machines must have pre 1946 type major components (see rule 3).
  2. Machines are to be in racing trim.
  3. Open (to MNZ rules) - Alcohol permitted.
  4. No twin leading shoe front brakes, or double-sided front brakes may be used unless fitted as original equipment.
  5. Maximum capacity 500cc ohv, ohc or two strokes and 750 sv or inlet over, side exhaust. see rule 14.
  6. No supercharging allowed.
  7. Machines must not have hydraulic steering dampers.
  8. Machines must not have hydraulic suspension dampers, (except Velocette Mk 8 KTT fitted with oleomatic type rear units).
  9. Machines must have ignition systems available within the period except American machines which may fit early 'Joe Hunt' type magnetos.
  10. The gearbox must have no more than four speeds.
  11. Machine must have a maximum of one carburettor per cylinder with a maximum choke size not greater than 1 ¼ inches (32mm) diameter unless fitted to the model as original equipment.
• FACTORY BUILT RACING CLASS. Machines built specifically for Grand Prix Road Racing.
  1. Machines must have been produced and raced by a recognised factory in the period.
  2. Open (to MNZ rule) - Alcohol permitted.
  3. Ceriani G.P. forks only permitted in pre 1963 classes if fitted as original factory equipment.
• CLUBMANS CLASS PRE 1963. Machines with major components (as per rule 3) not built specifically for racing:
  1. Lights and stands must be removed.
  2. Road type silencers may be retained but if racing exhausts are used they must comply with MNZ rules.
  3. No twin leading shoe front brakes, or double-sided front brakes may be used unless fitted as original equipment.
  4. Gear boxes shall have a maximum of four (4) speeds. Ratios may be varied.
  5. Pre 1963 road or racing carburettors or Amal Mk 1 concentric if the original type is not available.
  6. Petrol only, up to 100 octane (R.O.N. rating) Avgas or No 1 Racing Fuel permitted.
  7. Fairings are not permitted. A number plate with 'fly screen', of a type fitted as original equipment to a 7R or Manx, is the largest type of front screening allowed.
  8. Engines must retain the manufacturers bore and stroke. Maximum allowable overbore is 0.060" (1.5mm). Effective from 31st May 2004.
• MODIFIED CLASS PRE 1963.A modified machine must conform to all the general requirements except:
  1. Engine and gearbox to be the same silhouette as pre 1963 machines.
  2. Frame and suspension components built after 1963 may be used provided they are similar in type and style to pre 1963 components.
  3. Wheels must be of wire-spoked type. Maximum rim width 3.5" (inside width).
  4. Brakes may be later model, provided that they are of drum type.
  5. Amal Mk 1 and Mk ll concentric carburettors will be accepted in pre 1963 open and modified class.
  6. Open (to MNZ rule) - Alcohol permitted.
• CLASSIC '70s. The intent is for a silhouette class allowing competitors to modify their machines to be reliable and safe to race. These rules should be read in conjunction with the Road Racing Post Classicchapter of the MNZ Manual of Motorcycle Sport (Road). NZCMRR reserves the right to reject any machine that does not comply with NZCMRR rules or their intent. Onus of proof lies with the owner and the Technical committee should be consulted if doubt exists on eligibility. The NZCMRR Classic '70s Class encompasses the old Pre 1976 NZCMRR Class and the Pre 1972 Class as described in the Road Racing Post Classic chapter of the MNZ Manual of Motorcycle Sport (Road). Later versions of the same models released (but not updated) e.g. Honda 750 K1-K6 may be acceptable as eligible for Pre 1972 when competing in a racing class. Special allowance is made for Pre 1976 machines that have run on models that have modified crankcases.
  1972. Eligibility
        Japanese motorcycles from 1 Jan 1963 to 31 Oct 1972.
        Non-Japanese motorcycles from 1 Jan 1963 to 31 Dec 1975.

The capacity classes within Classic '70s are:

1. Up to 250cc
2. 251 to 350cc

• 351 to 500cc

1. 501 to 1300cc

1. General Requirements
   3. Unless otherwise contained in the machine's original specifications, wheel rim dimensions of a minimum of 18" (457mm) diameter, and maximum 3.5" width on all wheels.
   4. Reed valves on 2-stroke engines are not permittedon Japanese motorcycles. Crankcase induction is permitted on Japanese motorcycles if this design was of original manufacture. After market conversions are not permitted.

• Reed valves are not permitted on British, European and American motorcycles unless originally factory fitted on the actual motorcycle being raced.

1. Engine modifications: The external appearance of all engine components must be maintained as per the original engine manufacturer's specification, unless it can be conclusively shown that any external modifications made are from within the relevant period. Although the internal specifications are open, the basic building blocks of the engine construction must remain as original. Neither the number of valves nor the method of valve operation may be varied from the original machine.

1. Permitted Uses
   1. Fuel: Open (to MNZ rule) - Alcohol permitted.
   2. Keihin CR Special round slide carburettors up to 33mm bore size.

• Lockheed 4-fin brake callipers and replicas, of 2 piston design. Rear disc brakes allowed if of a period type.

1. Electronic Ignition System (Analogue or Digital).
2. Fairings and streamlining of a type and style in keeping within the period.

1. Prohibited Uses
   1. Air assisted or upside down front forks or forks greater than 35mm in diameter, unless originally factory fitted on the actual motorcycle being raced. Forks larger than 35mm may be used on open class machines if they are a period type, and fitted as original equipment.
   2. Fuel injection.

• Reed valves (see General Requirements).

1. Flat slide carburettors (except Gardner carburettors).
2. Turbo and Supercharging.
3. Mono-shock rear ends unless originally factory fitted on the actual motorcycle being raced.

• Cast metal wheels, unless originally factory fitted on the actual motorcycle being raced.
• Slick or grooved slick tyres.

1. Shock absorbers with remote or external reservoirs.
2. Disc brake rotors greater than 300mm diameter or floating discs unless originally factory fitted on the actual motorcycle being raced.
3. APE and MTC and similar big block aftermarket engine blocks.

• Disc callipers of more than 2 pistons unless originally factory fitted on the actual motorcycle being raced.
• Slipper or back torque limiting clutches unless fitted as original equipment on the actual motorcycle being raced.
• The following machines or their major components:
  • Kawasaki 900Z1.
  • Yamaha TZ variant models.
  • Yamaha RD variant models.
• SIDECAR CLASS - CLASSIC PRE 1963.A pre 1963 sidecar must conform to all the modified class pre 1963 requirements except:
  31. Separate motorcycle and sidecar type. Either bolted together or constructed in one piece. Tubular construction only, 'sitter' or 'kneeler' type. Engine must be mounted in the motorcycle frame and drive the rear wheel only. Steering head must be motorcycle type only, with telescopic, or twin shock leading or trailing link or a motorcycle system of older design. steering by handlebars only. Sidecar may be on either the left or the right. Wheelbase maximum 1600mm (63"). Wheel track 800 - 1200mm (31.4 - 47.2"). Rigid or twin-shock rear, (no remote reservoir shocks). No mono-shock unless original on motorcycle (Vincent). The sidecar platform must have an unobstructed floor and front exit (or both front and rear). The primary drive must be enclosed and all wheels, chains and belts etc, must be protected above deck level for passenger safety.
  32. Wheels, front and rear, minimum rim diameter 16", maximum 3.5" wide. Side car, minimum rim diameter 10", maximum 4" wide.
  33. A handle bar mounted, pull chord operated (rider's wrist), engine "kill" switch which, when operated, disables the low tension ignition circuit and any other electrical equipment (fuel pump) is required as well as a handlebar mounted switch which must be able to be operated easily whilst both hands are on the handlebars (as per MNZ rules).
  34. Front and rear must be operated by separate systems. No sidecar brakes.
  35. Passenger grips. Rigid grips must be attached to the frame only (not the bodywork).
  36. Chassis, fairing and general construction must be proven to be of the type raced pre 1963.
• SIDECAR CLASS - CLASSIC '70s.A Classic 70's sidecar must conform to NZCMRR Classic '70s class requirements except:
  1. As for pre 1963, (see rule 21a) except that the front and rear tyre centre lines may be up to 75mm out of line (parallel). No hub centre steering.
  2. minimum diameter 10". Maximum 2. rim width of 5 ½” and maximum tyre width 175mm, treaded type only (no slicks). Cast wheels of a type available pre 1976 permitted.
  3. "Kill" switch required (see pre 1963 rule 21c).
  4. Front and rear brakes can be linked however at least one front disc/brake must be operated in a separate system by the handlebar lever. Sidecar brakes must operate off the rear brake pedal. Hydraulic systems must have a positive stop for the lever (as per MNZ rule).
  5. Passenger grips. Rigid grips can be attached to the frame or bodywork/fairings but must adhere to MNZ rules.
  6. Chassis, fairing and general construction must be proven to be of the type raced pre 1976.
• SIDECAR CLASS - POST CLASSIC PRE 1982.This class and rules will be trialled, and if needed refined, over 2020 and possibly 2021. A post classic sidecar must conform to the Post Classic Pre 1982 class and general sidecar requirements (MNZ Road Racing Chapters 17 & 18) except:
  1. General Layout: No rear engine (long bike format). The engine must be in front of the rider.
  2. Constructed of circular or non-circular steel tubing. Max. diameter 102mm (4"), either manufactured in the period or that which replicates the period. Front suspension/steering geometry may be hub centre steer, telescopic or leading/trailing link. No Monocoque or Carbon Fibre construction permitted
  3. Engines: Manufactured before December 31st 1982. Maximum capacity 1300cc.
  4. Fuel: Open. Methanol permitted. No nitromethane additives.
  5. Wheels/Tyres. Cast wheels of a type available pre 1982 are permitted providing they comply with MNZ Rules 18.4f and g. As manufactured treaded type tyres only (No racing slicks, hand-cut slicks or racing wets are permitted).
  6. Ignition: "Kill" switch and lanyard required Rule 18.8d
  7. Brakes: Callipers must be either manufactured in the period or that which replicates the period. Max. number of pistons per calliper not to exceed 2 (MoM's Rule 17.4F& 18.6). Floating discs permitted but the carriers must be either manufactured in the period or that which replicates the period. No wave or non-ferrous discs.
  8. Chassis, fairing and bodywork must be either manufactured in the period or that which replicates the Pre 1982 period. Fibreglass or aluminium bodywork only. No carbon fibre permitted.
  9. Catch Tray, ideally containing absorbent material shall be fitted, capable of containing all spilled oil. Rule 18.7i
• MACHINE CONDITION.Motorcycles must be presented to the examiners in a clean and well prepared condition in keeping with the aim of the Register. The onus is on the rider to familiarise himself/herself with the rules and present a machine which is in accordance with them. Any alteration made after scrutineering will require re-scrutineering by a member of the Technical Committee.