Rule Change *Suggestion* Thread for 2011 Rulebook

[rybo]

Got it....will make sure it's discussed in the rule change meeting.

Thanks

[JimWilson29]

Proposed MRA Class Changes

(Current) Section 1 – RACE CLASS LIST
The MRA will run the following classes at each regular event. (Classes may be combined
into a single race but will be scored separately.):
Novice (GTO/GTU)
Amateur (GTO/GTU)
• Modern Vintage (GTO/GTU)
• Middleweight Supersport & Superbike
• Heavyweight Supersport & Superbike
• Open Supersport & Superbike
• Lightweight Grand Prix
• Super Twins (GTO/GTU)
• Colorado Class
• Race Of the Rockies (GTO/GTU)
• Ladies Of the Rockies
• Endurance Classes (Lightweight, Middleweight, Heavyweight, and
Open)
• Sportsman
• Superstreet class

(Proposed) Section 1 – RACE CLASS LIST
The MRA will run the following classes at each regular event. (Classes may be combined
into a single race but will be scored separately.):
Novice (GTO/GTU)
Amateur (GTO/GTU)
• Modern Vintage (GTO/GTU)
• Middleweight Supersport, Modified Production & Superbike
• Open Supersport, Modified Production & Superbike
• Lightweight Grand Prix
• Super Twins (GTO/GTU)
• Colorado Class
• Race Of the Rockies (GTO/GTU)
• Ladies Of the Rockies
• Endurance Classes (Lightweight, Middleweight, Heavyweight, and
Open)
• Sportsman
• Superstreet class

(Currently)2.1 Sprint class general guidelines
A. Expert classes are designated as Supersport, Superbike, Grand Prix, and Modern
Vintage GTO and GTU.
B. Amateur classes are designated as GTO and GTU.
C. Novice classes are designated as GTO and GTU.
D. Novice racers may enter and be scored in Novice and Amateur classes.
E. Beginner classes are designated as Superstreet classes.
F. Displacement, engine, chassis configuration, age, and the original
manufacturer’s intended use and availability determine motorcycle eligibility for
a given class.
G. A motorcycle may only be entered in a class in which all eligibility requirements are met.
H. If a motorcycle is entered in more than one class, it must conform to the
requirements for each class in which it is entered.
I. It is the racer’s responsibility to only enter classes in which his or her
motorcycle is eligible.

(Proposed)2.1 Sprint class general guidelines
A. Expert classes are designated as Supersport, Modified Production, Superbike, Grand Prix, and Modern
Vintage GTO and GTU.
B. Amateur classes are designated as GTO and GTU.
C. Novice classes are designated as GTO and GTU.
D. Novice racers may enter and be scored in Novice and Amateur classes.
E. Beginner classes are designated as Superstreet classes.
F. Displacement, engine, chassis configuration, age, and the original
manufacturer’s intended use and availability determine motorcycle eligibility for
a given class.
G. A motorcycle may only be entered in a class in which all eligibility requirements are met.
H. If a motorcycle is entered in more than one class, it must conform to the
requirements for each class in which it is entered.
I. It is the racer’s responsibility to only enter classes in which his or her
motorcycle is eligible.

(Current)2.2.3 Class Displacement and Configuration Limits*SUPERSPORT
A. Middleweight Supersport
• Up to 600cc four cylinder
• Up to 650cc pre-1984 four cylinder
• Up to 750cc three cylinder, four stroke
• Up to 850cc two cylinder, four stroke, three or more valves per cylinder
• Up to 904cc two cylinder, four stroke, two valves per cylinder, air cooled
• Unlimited displacement pushrod, two cylinder, four stroke, two valves per
cylinder, air cooled
B. Heavyweight Supersport
• Up to 750cc four cylinder
• Unlimited displacement three cylinder four stroke or two cylinder air cooled
four stroke
• 1125cc or less two cylinder, liquid cooled, four stroke
C. Open Supersport
• Unlimited displacement

(Proposed)2.2.3 Class Displacement and Configuration Limits*SUPERSPORT
A. Middleweight Supersport
• Up to 600cc four cylinder
• Up to 650cc pre-1984 four cylinder
• Up to 750cc three cylinder, four stroke
• Up to 850cc two cylinder, four stroke, three or more valves per cylinder
• Up to 904cc two cylinder, four stroke, two valves per cylinder, air cooled
• Unlimited displacement pushrod, two cylinder, four stroke, two valves per
cylinder, air cooled
B.Open Supersport
• Unlimited displacement

(New)2.3 Modified Production classes(*Current classes starting with 2.3 Superbike will be moved down in rulebook i.e. 2.4 Superbike Classes)

(New)2.3.1 Class Requirements
Modified Production motorcycles shall be limited to those manufactured for street use in the United
States. Such motorcycles must be readily available to the general public from established
manufacturers, distributors and/or dealers. Motorcycles must comply with manufacturers' published
specifications for given models and be fitted with all original equipment. Along with the following
items, all Motorcycle Technical Requirements and Supersport rules shall apply.
1. Modifications introduced by a manufacturer to a basic model configuration subsequent to the
original introduction of the model may be fitted within the limits of normal assembly procedures.
External welding, brazing or machining for this purpose is not permitted.
2. Modification of engine case(s) and/or cylinder castings is prohibited, except for the repair of crash
damage.
3. Internal engine modifications are permitted as long as the class displacement limits are not
exceeded and the stroke is not changed. Internal transmission ratios may not be changed.
4. Clutch lining material and number of plates may be changed.
5. The exhaust system may be repositioned for ground clearance or an aftermarket racing exhaust
may be fitted.
6. The ignition coil, condenser and related wiring and fittings may be changed. Accessory electronic
ignition systems may be used provided they are available to the general public. Generators and
alternators may not be removed and must be in working order (individual part failure during event
weekend exempt). Starter may be removed.
7. Chain and/or sprockets (including sprocket material) may be changed. Ring and pinion assemblies
may be changed.
8. Instruments may be added, removed, or modified.
9. The handlebar type may be changed, but they must mount in the original manner. Handlebars and
tank must have a minimum of one (1) inch clearance at full lock.
10. The seat may be changed. Footrests may be changed (rear sets allowed) or modified.
11. Bodywork is open, providing 5.2 Motorcycle Technical Requirements are followed including use of any
windshield.
12. Aftermarket wheels may be fitted if they are compatible with the original, unmodified brake
components. Rear Sprocket hubs and wheel spacers provided with approved aftermarket wheels
are allowed, unless the swing arm, forks, or brake mounting require modification to accommodate
their use. Slight chamfering of spacers, calipers, caliper mounts, forks, or chain adjusters for the
sole purpose of smooth wheel changing is allowed. Wheel size is open.
13. Stock brake calipers specific to model are required. Stock rear brake rotors may be drilled and/or
machined. Aftermarket rotors replicating o.e.m. diameter may be used. (Ex.: Wave Rotors)
14. Brake lining material may be changed and brake hub assemblies may be drilled for ventilation.
Braided steel brake lines are allowed.
15. Brace tubes and gussets may be added to the frame or swing arm, but no original tubes may be
removed or bent.
16. Rear swing arm may be stiffened and the swing arm pivot may be modified, but the frame may not
be altered, except as provided in #15 above.
17. Carburetors may be up‐dated or backdated to any applicable manufacturers' specifications for
that basic model. Turbo‐charging and/or changes to the basic type of fuel induction (fuel injection
vs. carburetors) are not considered such updating or backdating.
18. Carburetor bodies may not be modified but may be fitted with normally replaceable components
for jetting purposes.
19. Air box may be modified or removed. Air cleaners and intake ducting may be modified, added,
replaced, or removed. Velocity stacks may be fitted.
20. Oil injection pumps may be removed.
21. Brake calipers, discs, and fork tubes may not be exchanged for aftermarket or larger model
assemblies (such as 1000cc front end on a 750cc bike).
22. Tires are open; D.O.T. or racing slicks is permitted.
23. Aftermarket triple clamps made for the specific model of bike may be used. (Stock forks as above
in #21 must be utilized).

(New)2.3.3 Class Displacement and Configuration Limits
A. Middleweight Modified Production
• Up to 600cc four cylinder
• Up to 650cc pre-1984 four cylinder
• Up to 750cc three cylinder, four stroke
• Up to 850cc two cylinder, four stroke, three or more valves per cylinder
• Up to 904cc two cylinder, four stroke, two valves per cylinder, air cooled
• Unlimited displacement pushrod, two cylinder, four stroke, two valves per
cylinder, air cooled
B. Open Modified Production
• Unlimited displacement

(Current)2.3.2 Class Displacement and Configuration Limits **Superbike
Class displacement limits are set as follows:
1. Middleweight Superbike
• Up to 640cc four cylinder four stroke, three or more valves per cylinder
• Up to 850cc two cylinder, four stroke, three or more valves per cylinder
• Up to 750cc three cylinder, four stroke, three or more valves per cylinder
• Unlimited displacement two or three cylinder four stroke, two valves per cylinder
• Up to 250cc one or two cylinder two stroke, water cooled, unlimited origin
• Up to 1050cc four cylinder four stroke, two valves per cylinder
• Up to 510cc two or more cylinder two stroke, water cooled
• Unlimited displacement two stroke, air cooled
• Unlimited displacement single cylinder
2. Heavyweight Superbike
• 390cc to 750cc four cylinder four stroke, three or more valves per cylinder
• Over 390cc four cylinder four stroke, two valves per cylinder
• Over 485cc three cylinder four stroke
• Over 485cc two cylinder air cooled four stroke
• Over 485cc and 1125cc or less two cylinder, liquid cooled, four stroke
• Over 330cc two or more cylinder two stroke
• Over 450cc single cylinder four stroke
3. Open Superbike
• Over 485cc two or more cylinder

(Proposed)2.4.2 Class Displacement and Configuration Limits **Superbike
Class displacement limits are set as follows:
1. Middleweight Superbike
• Up to 640cc four cylinder four stroke, three or more valves per cylinder
• Up to 850cc two cylinder, four stroke, three or more valves per cylinder
• Up to 750cc three cylinder, four stroke, three or more valves per cylinder
• Unlimited displacement two or three cylinder four stroke, two valves per cylinder
• Up to 250cc one or two cylinder two stroke, water cooled, unlimited origin
• Up to 1050cc four cylinder four stroke, two valves per cylinder
• Up to 510cc two or more cylinder two stroke, water cooled
• Unlimited displacement two stroke, air cooled
• Unlimited displacement single cylinder
2. Open Superbike
• Over 485cc two or more cylinder


To sum this up, I am proposing we remove Heavyweight Supersport & Superbike and replace with 2 new classes: Middleweight Modified Production and Open Modified Production. The motorcycle requirements for these 2 new classes fall between supersport rules and superbike rules. Basically you are allowed engine modifications but must keep stock displacement, you can run after market wheels and slicks but must keep stock forks and calipers.
My reasoning for this is that this past season we averaged one 750cc bike and two 999cc vtwins in the HW classes. The grids were basically all 600's. Open Supersport had 600 riders too. By doing this we provide another true Middleweight class plus an additional Open class. 600 riders will still have the same number of classes they can run but 1000 riders will have an additional class they can run.
Tell me what you think.