To serve as a resource center to explain what we are about to the media
and to potential competitors, and sponsors.
To act as a centralized resource for SCCA Formula Junior families, to
aid in both the conduct of their racing season and in identifying and
recruiting new SCCA Formula Junior participants.
It is important to stress that "if they build it, they will come"
does not hold true. In order for Formula Junior to become what is envisioned
for it, it will take active and continuous effort on the part of all Formula
Junior families to recruit and retain new members, attract manufacturer
support, and continuous media coverage.
If you are a new Formula Junior competitor, or if you are interested
in competing, your first step should be to to visit the Resources section.
Be sure to join the Discussion list - this will put you in contact with
current FJ Families (quite possibly in your area) who will be happy to
help you get started. Discussion list members will also happily answer
any questions asked of them.
The following information regarding allowable Kart configurations and
Safety is taken directly from the 2007
SCCA Solo2 Rulebook, beginning on Page 146. References to other rulebook
sections are included at the point of reference.
2. Formula Junior B (formerly FJ1 and FJ3)
a.AGE: 8 years to 11 years
b.ENGINES:
1. Briggs & Stratton Raptor.
A.FUEL: Gas or Methanol
B.WEIGHT: 245 pounds for gas-fueled karts and 250 pounds for methanol-fueled
karts
C.OTHER: Balanced and blueprinted engines are allowed, but no Controlled
Stock, Modified, Limited Modified or Open Motors
2. Yamaha KT-100, only heads with OEM casting
"Yamaha" and cylinders with Y3 or Y4 and 787 are legal
A.Fuel: Gas and Oil.
B.Carburetor and Exhaust:
1.Walbro WA55b or HPV1 with WA55B manifold with RLV SSX-V exhaust or
2.Walbro WB3A carburetor and 0.600 restrictor plate with RLV YBX exhaust.
3.If hole exists in pipe for EGT sensor, EGT sensor
probe must be in place.
C.Weight: 250 pounds
3. Comer K-80
A.Fuel: Gas and Oil
B.Carburetor, exhaust and clutch as supplied with engine from manufacturer.
C.Weight: 250 lbs.
4. Briggs and Stratton World Formula: As homologated except it is permissible
to use an alternate chain/sprocket/gear (type 35).
A.Fuel: Gas
B.Restrictor: An internal carburetor throttle stop and/or intake restriction
must be used.
C.Weight: 275 pounds
D.Battery may be removed
B. CHASSIS
Formula Junior will follow section 19.1.A. 2. Additionally, Cadet sized
chassis (overall length 69", wheelbase 35" minimum and 38"
maximum) is approved for all engine configurations in FJB. All FJ karts
will follow rules section 19.1 items pertaining to construction materials
and ballast.
19.1 F125
A. FRAME/DIMENSIONS
1. Chassis must be constructed of carbon steel alloy using traditional
tubular construction. Nerf bars are required. Suspensions are prohibited.
Differential mechanisms that allow the rear wheels to rotate at different
speeds are prohibited.
2. Maximum width measured at any point shall be 55 inches. Maximum
length measured at any point shall be 84 inches.
5. All non-structural weights must be affixed to the kart, seat, or
driver in such a way as to prevent said weight from becoming separated
from kart/driver or moving freely during competition runs. In addition
to bolted on weights, this also allows weights to be placed on the driver
underneath a suit, to be placed inside the seat liners/inserts, and
to be used with quick change mechanisms, thus facilitating addition
and removal of weight during driver changes. Arm or wrist weights are
prohibited. Ballast weights may not be mounted to nerf bars or moving
parts.
C. WHEELS AND TIRES
For all classes: maximum tire size for rear tires is 6.00/11.0-5.
Maximum size for front tires is 4.50/10-5. Tire compound is restricted
to Bridgestone YHC or other tire manufacturer's models with durometer
readings of 58 or higher.
Kart specific "rain tread" tires of any durometer reading
may be used at a rain event. This does not allow the use of slick type
tires with compounds or designations softer than class specifications,
even if grooved to show a defined three dimensional tread pattern. Declaration
of a rain event is at the discretion of the Youth Steward." Declaration
of a rain event is at the discretion of the Youth Steward.
D. CLUTCHES
For all classes, wet or dry clutches allowed. Jackshaft clutch drives
for 2 cycle engines allowed, but must be securely fastened to the engine
and/or engine mount. No frame mounted Jackshafts. Axle clutches are
not allowed.
World Formula clutches must be as homologated except it is permissible
to use an alternate chain/sprocket/gear (type 35).
E. SAFETY EQUIPMENT
1. Must follow 19.1.G. In addition to meeting the requirements of 4.3.1,
helmets for Formula Junior drivers must be of closed face design, incorporating
full face shields and chin bars.
19.1 F125
G. DRIVER SAFETY EQUIPMENT
1. Neck Braces: An unaltered, collar type neck brace designed for motor
sports use, is mandatory. Kart specific neck braces are recommended.
2. Driver apparel: Drivers are minimally required to wear jackets of
leather, vinyl or abrasion resistant nylon or equivalent, and full length
pants to prevent or minimize abrasions. Full abrasion kart suits are
recommended. Shoes, socks, and abrasion resistant gloves are mandatory.
3. Seat Positioning: When normally positioned in the kart for competition,
the entirety of the driver shall be within the perimeter of the kart
and the driver must be able to reach and operate all controls. Loose
cushions or pads that prevent the driver from being adequately supported
by the sides of the seat are not allowed.
4.3.1 Helmets
Helmets meeting the following standards must be worn while on course:
All helmets meeting the current or two immediately preceding Snell Foundation
standards (SA, K, or M), or SFI standards 31.1A, 31.2A, 41.1A, or 41.2A
are acceptable. (edit: 2000 or 2005 currently)
For maximum protection, helmets must fit securely and should provide
adequate peripheral vision. The chin strap must be securely fastened.
Loaner helmets should be available to vehicle occupants not having their
own.
2. Kill switches: All drivers must demonstrate the ability to shut
down the engine both while driving and stationary. It is suggested that
the kart have an operational ignition kill switch within easy reach
of the driver in the normal operating position.
3. Seats: It is not permissible to use any type of strap or seat belt.
In the event a kart is upset, a driver must be able to exit the kart
unrestrained by a seat belt or strap. It is recommended to utilize some
form of seat insert and pedal extensions to fit drivers of different
sizes to one seat.
F. BODYWORK
Providing Solo Rules Sections 19.1.A and 19.2 are met and the kart is
prepared to the rules of a nationally recognized sanctioning body (e.g.
WKA, IKF, CIK), any style bodywork may be used.