Western New York Mini Cup Club
Rules and Membership Information
This section identifies all club
rules/options that may be different from the SRL ProMod rules that
follow. (As per club minutes of Sept. 17, 2001, any changes to SRL
rules for local (WNY) options will be clearly identified in a
section separate from the main SRL rule book.)
Adoption of rules and/or changes
requires majority vote of club members.
WNY Mini Cup Club Rules allows the
use of an "alternative motor" developed and used in 2001. This
"alternative" motor does not and cannot produce more HP than the
limited mod engine based on dyno tests. Since it uses a larger cam
than allowed by SRL ProMod rules it is not legal for SRL
sanctioned events and points. Bottom line: If you need a new motor
go with the limited mod. If you own an "alternative" you're legal
for WNY club events only.
Membership Information
Must be paid member to be counted
in points standings.
Points go with the car.
Voting privileges to car owners:. 1 car 1 vote
To encourage out of town racers and potential new members to
participate in our events, the club will not require those
participants to pay the annual club membership fee of $35.00 until
their third race. This "Free Pass" will be good for only two
events. Should the car/driver which to participate in a third
event, full membership and payment will be required at that time.
Note: If someone is racing on a "Free Pass" they will not be
counted in season points for annual awards/contingency funds etc.
However, they will be eligible for the weekly purse based on their
finishing order.
Agreed that developing Associate Membership program would be
worthwhile. Nominal fee of $10-$15 that would entitle member to
certain perks benefits. (To be defined by club executive)
Scale Racing League Class
Specifications
ProMod Mini-Cup - 2002
Contents
1.0 TERMS OF THE BASIC COMPETITION RULES
2.0 VEHICLE TECHNICAL SPECIFICATIONS
3.0 CHASSIS SPECIFICATIONS
4.0 ENGINE SPECIFICATIONS
5.0 CARBURETOR AND INTAKE SPECIFICATIONS
6.0 DRIVER SAFETY EQUIPMENT REQUIREMENTS
The “Class Specifications” of the Scale Racing League are intended
to assist in governing the competitiveness and vehicle safety of
any and all sanctioned events. They are a guide and in no way
guarantee against injury or death to participants, spectators or
others. No express or implied warranties of safety or fitness for
a particular purpose shall be intended or result from publication
or compliance with these rules.
January 1st, of each year, all
editions of the Scale Racing League’s Class Specifications are
superseded by the next set of Scale Racing League’s Class
Specifications. The year printed at the top of each page is known
as the revision number of that set of Class Specifications.
The Scale Racing League reserves
the right to change, modify or supplement the Class Specifications
at any time. All members of the Scale Racing League will be
notified of these changes by means of a “Rev Page” mailed to them
via the United States Postal Service. “Rev Pages” will completely
replace the entire section number in that year’s revision of the
Class Specifications and shall be effective the 1st day of the
month preceding the post marked month of the letter. “Rev Pages”
shall also be made public within the next published club
newsletter.
Note:
1. Inside this publication, The
Scale Racing League may be referred to with the initials “SRL”.
2. Inside this publication, The
Basic Competition Rules may be referred to with the initials “BCR”.
3. Inside this publication, The
Class Specifications may be referred to with the initials “CS”.
4. All dimensions in this
publication are in inches unless otherwise noted.
5. Changes to this publication
different from the previously published revision will be shown in
underlined text. The same is true for all “Rev Pages”.
Racing is a dangerous sport. The
likelihood of serious injury and possible death are greatened by
competing in speed type events. The Scale Racing League assumes no
responsibility for injury or death resulting from, but not limited
to, the compliance of these rules or the engagement of competition
in a SRL sanctioned event. No express or implied warranties of
safety or fitness for a particular purpose shall be intended or
result from publication or compliance with these rules.
The Scale Racing League is a driver friendly organization,
dedicated to the promotion of ½ scale motorsports. The Scale
Racing League is built on an open manufacturer template that
allows our members the chance to improve the organization in which
they belong. The address is:
Scale Racing League, inc.
P.O. Box 929
Grayson, Georgia 30017
Phone / Fax Number: 770-554-5684
1.0
TERMS OF THE BASIC COMPETITION RULES
“Basic Competition Rules” shall
govern all vehicles participating in sanctioned SRL events. A
competitor’s ingenuity is encouraged. The rules set forth in the
BCR set limits on said ingenuity. These limits will be strictly
enforced. All parts of a vehicle, mentioned or not, shall be
subject to the approval of the SRL. Parts found to be unsafe, even
if specifically allowed in the BCR, shall be banned from
competition. This will include, but is not limited to, “stock”
parts on any and all manufacturer vehicles. No vehicle or part
shall be deemed legal by simply passing through inspection
unobserved..
Top of Page
2.0
VEHICLE TECHNICAL SPECIFICATIONS
2.1 FUELS
The sanctioning body reserves the
right to require competitors to adhere to these specifications by
means of a pump around system, spec fuels and/or any other test
deemed appropriate.
1) Unleaded gasoline only
2) Specific gravity equals 0.700 to
0.780 at 60 Degrees F.
3) Trace Lead:
- Alkyl Compounds 0.000 – 0.005%
weight
- Aromatics 0-50%
- Oxygenated compounds: 0.000 –
0.005% weight
4) Nitrogen-bearing additives are
prohibited in the fuel or in the engine oiling systems.
The director at his/her discretion
may disqualify any competitor based upon any traces of these
additives whether detected by a device or sense of smell.
Competitors found to be in violation of section 2.1 will be dealt
with harshly.
2.2 OILS SPECIFICATIONS
The use of combustible oils and/or
additives is strictly forbidden. The sanctioning body reserves the
right to require competitors adhere to these specifications by the
use of spec oils and any/or other test deemed appropriate. Oils
and/or additives found to be an irritant to other drivers and or
people will be banned. Competitors found to be in violation of
section 2.2 will be dealt with harshly.
2.3 WEIGHT SPECIFICATIONS
All vehicles shall weigh the
specified amount for the class at post and pre race inspections.
There shall be a maximum of 55% left side weight.
- Suspended, Mini-Cup = 780 Pounds
- Ridged, Mini-Cup = 760 Pounds
2.4 BALLAST
Ballast shall be added to all cars
as required, to meet minimum weight. Ballast shall be securely
mounted within the bodywork and serve no other purpose. Ballast
shall be mounted by means of grade 8 hardware, lock nuts and
safety wire or pins to a frame member. Ballast shall be solid with
no sharp edges.
2.5 NOISE REGULATIONS
Local noise regulations may require
the use of a muffler, in which case the sanctioning body will
mandate the existence. Mufflers are a non-techable item except for
the following specifications:
1) Mufflers shall quiet the vehicle
suitable for the track’s requirements
2) Mufflers shall be securely
mounted.
2.6 BATTERIES
A type 10L battery (or similar), in
good working order, shall be mounted securely to the vehicle.
Maximum dimensions of the battery shall be: L 6.5 W 5.0 H 8.0. In
the event the battery is located in the driver’s compartment, it
shall be mounted within a non-conductive marine type container or
equivalent. All batteries shall be attached securely to the frame
or chassis structure independent of the marine type container.
Battery location is unrestricted. Battery, mounting, wiring and/or
charging post are subject to approval by the sanctioning body.
2.7 FUEL CELLS
All fuel cells shall be securely
mounted to the frame. The location shall be within the structure
of the vehicle outside the driver’s compartment. It is recommended
the fuel cell be mounted inside a metal enclosure. The filling
neck of the fuel cell shall not be in the driver’s compartment.
Maximum capacity of the fuel cell shall be 3 (three) gallons.
Filler caps, fuel pickup openings and lines, breather vents, and
fuel lines shall be so designed that if the car is partially or
totally inverted, fuel shall not escape. Fuel cell breathers shall
vent outside the vehicle and away from the exhaust system Fuel
lines shall not enter or run through the driver’s compartment.
2.8 FIREWALL AND FLOOR
A firewall constructed of aluminum
and/or steel shall completely separate the vehicle into two areas
known as the engine and driver compartments. The Floor of the
vehicle shall be constructed of steel only with a minimum
thickness of .030.
2.9 FIRE SYSTEMS
All vehicles are recommended to
have a fire extinguisher on board and securely fastened.
2.10 FLUID CATCH TANKS AND
FILTERS AND BREATHERS
All orifices within the engine
compartment shall vent into a catch tank that is securely mounted
within the engine compartment (I.E.…Valve cover)
2.11 ELECTRICAL AND SWITCH
SPECIFICATIONS
All electrical wiring shall be
neatly routed within the chassis of the vehicle. No part of the
harness may be capable of “floating” within the driver
compartment. Switches shall be mounted to a dash or panel located
in front of and accessible by the driver. The ignition or master
kill switch shall be located on the left-hand side of the vehicle
and marked on/off. Accessibility to the ignition or kill switch
through the left side window is mandatory and shall be
unobstructed.
2.12 WINDOW SAFETY NETS
All vehicles are required to have a
left side safety net that is securely fastened to the chassis. The
use of a window net or side window is recommended on the right
side.
2.12.1 WINDOW MATERIALS AND
FASTENING
The windows shall be constructed of
a clear polycarbonate (i.e. Lexan) material with a minimum
thickness of .0625. Windows shall be securely fastened in place.
Plexiglas is not a polycarbonate material. There shall be no holes
in the front or rear windows. Front, rear, left rear side and
right rear side windows are mandatory.
2.13 DATA COLLECTION DEVICES
If used, data collection devices
shall fall within these parameters. Device shall collect and/or
remember only these approved inputs:
- Head Temperature
- Exhaust Gas Temperature
- Exhaust Air/Fuel Mixture
- Revolutions Per Minute
- Lap Time
All devices shall be securely
mounted and shall not obstruct the driver in any way.
2.14 DRIVER RESTRAINT SYSTEM
The use of a 5-point quick release
style safety harness is mandatory. The Safety harnesses shall have
a SFI rating of at least 16.1 and a minimum of 2 inches wide. The
safety harness shall be free of fretting and visible wear with a
manufactured date less than 5 years old. The Safety harness shall
be mounted securely to the chassis with grade 5 SAE bolts. NO
INERTIA WHEELS
2.15 BODY REQUIREMENTS
The body is required to fit the
chassis properly. Hand made and /or home built bodies shall be
subject to approval of the sanctioning body. The sanctioning body
encourages the purchase of bodies of reliable and known sources.
2.16 BODY CONSTRUCTION
The body, which includes, trunk,
hood and roof panel shall be constructed of fiberglass and or
plastic. If the body is constructed of more than one material no
visible difference of the two shall be evident. If the body is
constructed of multiple pieces (i.e. clips, fenders etc.) the
seams shall have close fits and an appealing look. All bodies
shall have separate trunk, hood and roof panels. The roof panel
shall be hinged in the front.
Body dimensions shall be:
- MIN |
MAX
- Width: 40 inches
| 45 inches
- Length: 105 inches
| 115 inches
- Height: 30 inches
|33 inches
2.17 BODY MOUNTING
The Body shall be mounted to the
chassis by means of screws or bolts, level to the chassis. The
body shall be mounted on center to the chassis. The only holes
allowed in the body shall be located on the front spoiler under
the bumper. A maximum of 2 holes, 3 inches by 6 inches or 4 holes
3 inches by 3 inches. A metal mesh screen mounted from inside the
body is required for any/all holes.
2.18 SPOILER REQUIREMENTS
Rear Spoilers shall not have the
ability to be adjustable from inside the driver’s compartment.
Spoilers shall meet a minimum width of 35 inches and a maximum of
36 inches. The height of the spoiler shall be a minimum of 2
inches and a maximum of 4 inches tall. Spoilers shall be run
between 39 and 50 degree to a level and horizontal plane. Spoiler
shall be constructed of a thick enough material as to keep it from
flexing while at speed. Spoiler angle will be measured with driver
in the car and as raced.
2.19 BUMPER SPECIFICATIONS
Bumpers are required on front and
rear of the vehicle. Bumpers shall not be visible or protrude
outside the body.
2.20 SEAT REQUIREMENTS
The seat shall be constructed of
aluminum by a reputable manufacturer of Automobile racing seats.
Seat shall be securely mounted on the centerline of the chassis.
The only materials allowed for the mounting of the seat shall be
metal. NO modifications with there intent deemed as lightening
shall be allowed. Seats and the mounting of them are subject to
sanctioning body approval.
2.21 STEERING SPECIFICATIONS
The steering system shall consist
of a steering wheel suitable for automobile racing and mounted
with a quick release hub, and a rack and pinion style steering
box. All bolts used to mount any part of the steering systems
shall be grade 8 and use lock nuts and/or safety wire.
2.22 WHEEL SPECIFICATIONS
Wheels shall be 8 inches max
diameter and 8 inches max width and constructed of aluminum and/or
steel. Wheel rim width shall be measured at the base of the rim
seat.
2.23 TIRE SPECIFICATIONS
American Racer Slicks - 15.0 X 7.00
X 8S are mandatory. M32 compound only. Tire softeners are
prohibited
2.24 BRAKING SYSTEM
REQUIREMENTS
The braking system shall consist of
one foot-operated pedal, located on the left side of the car, that
operates a hydraulic style master cylinder. The braking system
shall brake the entire rear axle, at a minimum. NO BAND STYLE
BRAKES
2.25 THROTTLE LINKAGE
SPECIFICATION
The throttle of the engine shall be
controlled by one foot-operated pedal located on the right of the
vehicle. Throttle return springs are mandatory.
2.26 DASH REQUIREMENTS
The dash shall not hinder the
driver from controlling the car in any way. The dash shall not
obstruct the driver’s view in any way.
2.27 REAR AXLE REQUIREMENTS
The rear axle shall be made of
steel at least 1 ¼ inches in diameter. The axle shall not protrude
outside the wheels. Both rear hubs shall be securely mounted to
the axle. The hubs shall never spin independent to the other wheel
or axle. Axles shall have a groove cut into the end. This groove
shall have an external lock ring installed. No limited slip
devices.
2.28 ENGINE LOCATION AND
COOLING REQUIREMENTS
The engine must be located in the
rear of the chassis. Engine cooling shall be limited to shrouds
and ducts. NO RADIATORS. The oil capacity shall remain unaltered
from stock specifications.
2.29 AIR DUCT SPECIFICATIONS
NACA style ducts shall be located
in the rear side windows only except for one duct located in
either (not both) driver’s side window. The duct located in the
driver’s side window shall not close off more than 1/3 of the
window opening – this includes the mounting structure.
Accessibility requirements in section 2.11 are mandatory. NO
FORCED AIR INDUCTION.
2.30 MIRROR SPECIFICATIONS
All vehicles are required to have
mirror(s) that give the driver a rear view of both sides of the
car. Mirrors shall not protrude outside a vertical line drawn from
the ground up tangent past the body.
2.31 CLUTCH SPECIFICATIONS
Only dry centrifugal clutches
utilizing a “bell” and “shoe(s)” design are allowed. No
Transmissions, belt driven torque converters, oil bath or axle
clutches. Manufacturer is open. Number 35 chain drive only.
2.32 ENGINE STARTER
SPECIFICATIONS
All vehicles are required to run an
on board engine starter operated by a switch on the dash. The
starter shall be in good working order
2.33 GEARING SPECIFICATIONS
The sanctioning body reserves the
right to specify a “SPEC” gear ratio for special events or series.
2.34 CHASSIS RIDE HEIGHT
Minimum ride height shall be
measured at the nose and both sides of the chassis with driver
sitting normally inside the seat and vehicle above minimum weight.
Minimum ride height shall be one and one half inches “1 1/2”
measured at the lowest point of the chassis or body, not including
welds or fasteners for suspended vehicles. Ridged vehicles shall
retain a minimum ride height that allows for safe operation of the
vehicle. Excessive scrubbing of the chassis is prohibited and is
cause for a black flag to be issued or finish position to be taken
away.
2.35 RESTRICTOR PLATE
The use of restrictor plates for
all Junior Pro sanctioned events is mandatory. The plate must be
installed firmly in place, pushed all the way down on the
carburetor studs. One gasket shall be used on either side of the
restrictor plate. All air passing trough the intake port of the
head shall pass through the air filter. The restrictor plate must
be the approved plate offered by the Scale Racing League with out
modification.
The sanctioning body reserves the
right to require competitors to run a carburetor restrictor plate
for special events or series. The official restrictor plate
supplied by the SRL has a .750” +/- .001” diameter hole.
2.36 SHOCKS AND SPRING
SPECIFICATIONS
Shock and springs may be of any
manufacture. Springs shall be 1 7/8 inches in diameter, rates are
open. Shocks shall not have remote reservoirs(s) and shall not be
adjustable from inside the driver’s compartment.
Top of Page
3.0 CHASSIS
SPECIFICATIONS
3.1 CHASSIS MANUFACTURER
3.2 CHASSIS SPECIFICATIONS
The overall length width and height
of the chassis shall fit within the dimensions set forth in
section 2.16. The suspension settings shall be run within the
following parameter at all sanctioned events:
- MIN |
MAX
- Wheelbase: 59 inches
| 61 inches
- Front Track: 43 inches
| 45.5 inches
- Rear Track: 43 inches
| 45.5 inches
The left and right wheelbase of the
vehicle shall be no greater than ½ inch different from each other.
No portion of the wheel or tire shall protrude outside the
bodywork more than the maximum of 1 inch.
Offset chassis are prohibited on
suspended chassis construction. The use of offset chassis for
ridged vehicles is approved.
3.3 CHASSIS REPAIR
Chassis repair and modifications
shall stay within the rules set forth by the BCR. It is highly
recommended that competitors have their chassis regularly
inspected by a professional for metal fatigue. No cracked or
broken frames shall run in any sanctioned events.
Top of Page
4.0
ENGINE
4.1 ENGINE REQUIREMENTS
The engine shall fall within these
specifications. Section 4.0 shall regulate the changes and/or
modifications to the engine. No modifications, substitution and/or
changes to any engine component unless specifically detailed in
this section.
4.2 HONDA GX340
Honda GX340 (11 HP) engines that
make the following changes are allowed in competition. All shall
be bored to accept and have installed a Honda GX390 piston and
rings. These are the only differences in the 340 and 390 engines
manufactured by Honda. A GX340 with these modifications will be
known as a GX390 within this publication, and is subject to ALL
rules within section 4.0
4.3 ENGINE MANUFACTUER
Only Honda GX390 engines will be
used in SRL sanctioned events. No interchanging of parts from
different engine models allowed. Engines shall not be altered from
stock Honda specifications unless otherwise noted here within.
4.4 ENGINE LEGALITY
The use of stock Honda parts and/or
Honda factory shop manual shall be used to determine the legality
of the engine.
4.5 GOVERNOR AND OIL ALERT
SYSTEMS
Internal and external governing
system shall be removed. The removal of the charging system is at
the discretion of the driver/owner. The charging system if present
shall not be modified and shall serve no other purpose. Oil alert
system may be removed. All resulting holes shall be plugged.
4.6 HEAD SPECIFICATIONS
Head may be machined to a minimum
of 3.605". Zero decking allowed. Porting and polishing allowed. No
welding or addition of material is allowed. Head gasket shall be
stock with no modifications.
4.7 VALVE TRAIN SPECIFICATIONS
Heavy duty valve train is allowed.
Triple angle valve jobs allowed. Slotting of Honda rocker arms is
allowed.
4.8 PISTON, BLOCK AND RINGS
SPECIFICATIONS
Flat topping of the piston is
allowed. Lightening of stock, manufacturers piston is allowed.
Wrist pin may be lightened. Bore and/or piston clearance shall not
exceed the maximum service limits. When the service limit has been
exceeded it is permissible to oversize the bore by 10 thousandths
(.010"), 20 thousandths (.020"), or 30 thousandths (.030"), only
when stock replacement pistons are used. No gapless rings. The use
of an after market top ring is permissible. Block may be decked to
zero. Zero pop up allowed.
4.9 CRANK SPECIFICATIONS
Crankshaft must remain stock
stroke. No lightening allowed. Polishing is permitted. Service of
the crank by welding and/or grinding to .010 under is permissible
when the stock .010" replacement rod is used. Crankshaft may be
shortened by a maximum of 1.250 inches at the clutch end.
4.10 CONNECTING ROD
SPECIFICATIONS
Honda GX390 connecting rod shall
remain stock except for the following. Oil
lubrication holes are open. Rod bolts are open. Rod must be a
stock manufacturers (Briggs or Honda) part. Rod may be polished,
slotted for oil passage and shot peened.
4.11 BALANCER SPECIFICATIONS
The balancer shall be installed
within the factory specifications and remain stock. No
modifications.
4.12 FLYWHEEL SPECIFICATIONS
Flywheel shall be stock Honda. The
removal of the charging magnets is permissible. Flywheel may be
balanced but shall not weight less than 11 pounds 10 OZ. The use
of an advanced flywheel key is permitted.
4.15 IGNITION SPECIFICATIONS
The stock coil shall not be
rewound. Spark plug, wire and boot are open.
4.16 CAM SHAFT SPECIFICATIONS
Max lift: .285"
4.17 RECOIL STARTER
The recoil starter shall be
removed. The part referenced in the "Honda Shop Manual" as the
"Starter Pulley" may be cut down to a minimum thickness of .315.
In which case the resulting hole in the "Fan Cover" shall be
covered with a mesh screen. The Flywheel Cooling Fan shall remain
mounted and stock.
Top of Page
5.0
CARBURETOR AND INTAKE SPECIFICATIONS
5.1 CARBURETOR SPECIFICATIONS
The carburetor shall fall within
these specifications. Section 5.0 shall regulate the changes
and/or modifications to the carburetor. No modifications,
substitution and/or changes to any carburetor component unless
specifically detailed in this section.
5.2 AIR FILTER
Air filter of any size and
manufacturer is allowed. Air filter shall have no holes. All air
passing through the intake port of the head shall pass through the
air filter. Soaking of the air filter in any combustible substance
is strictly prohibited.
5.3 VELOCITY STACK
Velocity stack (AKA air filter
adapter) is open.
5.4 CARBURETOR MOUNTING
The carburetor shall be mounted in
the upright orientation. Gaskets are open.
5.5 REMOTE ADJUSTERS
The addition of a driver
compartment located remote adjuster(s) is allowed.
5.6 CARBURETOR MODELS
The carburetor shall be either the
Honda GX390 adhering to section 5.8 or Tillotson 314G adhering to
section 5.9
5.7 CARBURETOR INTAKE
The only matter allowed to pass
through the carburetor into the intake port shall be air. In other
words, No injection systems are allowed. NO RAM AIR to the
carburetor is allowed.
5.8 HONDA SPECIFICATIONS
Maximum bore shall be .925".
Modifications to mount remote adjuster(s) are allowed as long as
they serve no other purpose. Choke may be removed and the
resulting holes shall be plugged. Jet shall be stock Honda and may
be drilled. Needle and seat shall remain stock and unaltered. A
pick up hole can be drilled parallel to the existing hole of the
same size. It is permissible to remove the tab on the low idle
mixture pilot screw. Honda insulator plate can be modified but
shall be present.
5.9 TILLOTSON SPECIFICATIONS
Maximum bore shall be .887”. Jet
may be any size and or manufacture as long as there
are no modifications to the carburetor. No modifications allowed.
Top of Page
6.0
DRIVER SAFETY EQUIPMENT REQUIREMENTS
6.1 SUIT
Driver suits that effectively cover
the body from the neck to the ankles and wrist, manufactured of
fire resistant material are mandatory. All suits shall be
manufactured of the following materials:
NOMEX, KYNOL, FPT, IWS, Fiberglass,
Firewear (tm), DURETTE, FYPRO, PBI, KEVLAR or any suit carrying an
SFI rating of 3-2A/1.
6.2 HELMET
Crash helmets approved by the Snell
Foundation with a Snell sticker 1990 or
later Special Application (SA90) are mandatory. Helmets involved
in major
accidents should be sent to the Snell Memorial Foundation for
inspection.
6.3 GLOVES
Gloves made of leather and/or
acceptable fire resistant material containing
no holes are mandatory.
6.4 SHOES
Shoes, with uppers of leather
and/or nonflammable material that at a minimum cover the instep
are mandatory.
6.5 ARM RESTRAINTS
Driver Arm restraints are highly
recommended.
6.6 NECK COLLAR
Driver neck collars are highly
recommended.
Top of Page
Rules:
Extreme Engine Systems