ACU REGULATIONS

All training sessions are permitted and regulated by the Auto Cycle Union.  As a club, we are guided
by the Regulations (specific to Grasstrack and Motocross disciplines) and National Sporting Code
detailed in the ACU Handbook.  Below are extracts taken from this handbook which highlight some
of the requirements.  The ACU Handbook is available to purchase at £8.00 or a copy will be made
available on site for any member to peruse.

Riders must provide their own machine and protective helmets, gloves, goggles and clothing.

AGE GROUPS AND ENGINE CAPACITY (GRASSTRACK)

Age on January 1st

• Auto Cadet.........................6/7 years
• Cadet..................................6-8 years
• Junior 65MX.......................7-10 years
• Inter 85MX (small wheel).....9-12 years
• Senior 85 MX (big wheel)....11-15 years
• Junior..............................9 – 11 years
• Intermediate....................12-14 years
• Senior A 250cc....................5-18 years
• Senior B 350cc...................15-18 years
• Youth Short Track..............12-15 years
• FIM 125 Gold Trophy...........12-16 years
• UEM 125 European Cup........10-16 years
• FIM 125 Gold Trophy...........12-16 years

Maximum Engine Capacities (Grasstrack)

• Auto Cadet ..........Auto 50cc Fixed gear automatic
• Cadet    65cc.........2 stroke – 110cc 4 stroke
• Junior 65MX..........65cc 2 stroke – 110cc 4 stroke
• Inter 85MX (small wheel).....85cc 2 stroke – 150cc 4 stroke (14” rear 17” front)
• Senior 85 MX (big wheel)......85cc 2 stroke – 150cc 4 stroke (19” rear 21” front)
• Junior............................... 100cc 2 stroke – 200cc 4 stroke
• Intermediate.....................150cc 2 stroke – 250cc 4 stroke
• Senior A 250cc...................250cc 2 stroke – 250cc 4 stroke
• Senior B 350cc...................350cc 4 stroke
• International 125cc............125cc 4 stroke

MOTOCROSS

• 6-7 years  Automatic A..........Max 50cc 2 or 4 stroke    (12” rear, 15” front)
• 6-8 years  Automatic B..........Automatic no manual clutch
• 7-10 years Junior..................Max 65cc 2 stroke or 110cc 4 stroke (12” rear, 14”  front)
• 9-12 years Intermediate.....   Max 85cc 2 stroke or150cc 4 stroke (14” rear, 17” front)
• 11-15 years Senior................Max 85cc 2 stroke or 150cc 4 stroke (16” rear, 19” front)
• 14-17 years Open (youth)......Max 145cc 2 stroke. Min 200cc 4 stroke Max 250cc 4 stroke (19” rear 21” front)

ENVIRONMENTAL REQUIREMENTS

PROTECTION OF THE LAND

Measures must be taken to prevent discharge of fuel, oil, cleaning fluids, degreasants, cooling and
brake fluids etc into the ground. For all off road disciplines (including training) all riders must use an environmental mat at all points where machines are serviced.

Containers for waste oil and cleaning materials are provided on site.  Please use them.
Powerwashing of machines are strictly prohibited.
There should be no long term evidence of any activity
All rubbish must be taken away from site

SOUND LEVEL CONTROL

The club cannot allow machines to be used which are in contravention of the sound level control
Regulations.  Machines which are considered excessively noisy will be subject to noise test. 

If found to be above the dBa specified in the ACU Handbook, use of the machine on site will not be
permitted.