ALMS/LMS GT CARS Minimum body weight ammendment of 07APR09 indicated in red per Art.7.1.2.
7.1.1. GENERAL DESCRIPTION
Any copy at scale 1/24 of a real race car having been seen in the ALMS races in
the GT category of the current or the previous year will be considered as a
ALMS GT car. It will be referred to in this rulebook as a GT car.
7.1.2. WEIGHT, DIMENSIONS & GROUND CLEARANCE
The minimum weight for a complete ALMS GT cars is 190 grams. The minimum weight for the body with body mounts is 35 grams.
The ground clearance will be measured under the entire RTR car, including the
body, with the guide flag sitting free in the cutout so that all four wheels
sit flat on the tech block. At the start of every race: never below 1.00mm. During a race: never below 0.40mm.
7.1.3. CHASSIS, MAKE & TYPE
(a) Any mass manufactured chassis as per the IMCA homologation list, is allowed.
Mixing of parts between homologated chassis and makes is allowed.
(b) The chassis must be assembled with screws and/or nuts and bolts, or by
gluing, using the original mounting holes on the chassis.
No part of the chassis may be soldered.
(c) The use of after-market parts is allowed, but the use of carbon parts is
limited to : (i) body mounts, (ii) the H-plate, (iii) the spring plate, (iv)
the guide holder.
(d) The opening for the motor in the ground plate may be closed by any piece of
any make.
(e) The guide must be of standard make, with a maximum blade length of 27 mm,
and this guide blade is the only part of the chassis that may enter the track's
slot.
(f) No part of the chassis may be visible when viewing the car from above.
(g) Free materials are restricted to: (i) nuts, bolts, spacers, washers and
springs, (ii) braids & lead wires, (iii) motor holder, (iv) body holders, (v) axle bearings, (vi)
ballast weights.
7.1.4. MOTOR, GEAR AND PINION
(a) MOTOR - Only the sealed hand-out ProSlot PS4000-IMCA with balanced armature,
with an M50 9T pinion already soldered to the motor axle, and with ball
bearings in the can will be used. All of these hand-out motors will be already
broken in. Motor must be bolted to the chassis using M2 screws in the original
mounting holes and mounting bracket. The motor must be mounted with the magnets
in a horizontal plane. Soldering of the motor is not allowed, the only
exception being the connection of the lead wires to the motor terminals.
(b) PINION & GEAR - A 9 teeth M50 pinion is already soldered to the motor and may under no
circumstances be removed from the motor. Spur gear must be a 44 teeth M50 gear,
make of this gear is free. Any IMCA sanctioned race will have to be raced with
this gear ratio.
7.1.5. WHEELS, AXLES & BEARINGS AND SPUR
(a) AXLES & BEARINGS - Only steel 3 mm Ø blank axles and 6 mm outside diameter bearings of any make are allowed. Fitting
of these bearing to the chassis must be performed without any cutting or
modification to the chassis. The use of independent front wheels is allowed. No
differential of any type is allowed on the rear axle.
(b1) FRONT WHEELS - Front rims must be made from aluminium, with a minimum of 21
mm outside diameter, and 20 mm inside diameter. Front wheels are always at
least 7 mm wide and minimum 26.5 mm diameter. Front tires may be of any type of
black rubber and may be hardened. The front wheels must touch at all times over
their full width when positioning the car on the track or on the tech block.
Cambered front wheels are allowed, with a maximum camber angle of 3°. The use of cambered front wheels does not void in any way the rule regarding
the minimum diameter nor the rule regarding the contact surface with the track
or the tech block.
(b2) REAR WHEELS -Rear wheels are handout Scaleauto ProComp wheels with 27,5 mm Ø 13 mm wide, 20 mm Ø inside. Tyres may not, under no circumstances, be treated with any kind of
product at all. Removing dirt, dust and loose rubber particles from the tyres
may only be performed by rolling the car on a scotched surface.
(b3) WHEEL INSERTS - All 4 wheels of the car must be fitted with 3-dimensional
wheel inserts, fairly representing the wheels of the real 1:1 car, during the
entire race duration. Practice without wheel inserts will be tolerated, for
obvious financial reasons.
(c) SPUR - The wheels may not protrude outside of the body when viewed from
above. Under no circumstances, and irrespective the width of the body, no car
can have a front and/or rear spur wider than 83 mm. Spur will always be
measured at the widest point of the front and rear axles.
7.1.6. BODY & INTERIOR & LIGHTS
(a) MATERIAL - Body must be manufactured and/or assembled from one or more of
the following materials : moulded polystyrene, (plastic kits, Carrera
bodies,...) or moulded and / or resin laminated with glass fibre, carbon fibre,
or similar materials. These bodies must be a fair representation of the real
1:1 race car, and they must be painted in the correct colours, wearing at least
the main sponsors decals as on the real 1:1 car. Fine detailing is strongly
encouraged and appreciated, but we do realise that not everyone has the same
modelling skills. Lexan may only be used for the interior and the clear parts
like windows and headlight covers.
(b) BODY EXTERIOR - Bodies must be equipped with: (i) a windshield, (ii) side
and rear windows, if existing on the 1/1 race car, (iii) exhaust pipe(s), if
visible on the 1/1 race car, (iv) front splitter, if existing on the 1/1 race
car, (v) rear diffuser, if existing on the 1/1 race car, (vi) rear spoiler,
(vii) rear view mirror(s), (viii) windshield wiper(s) if visible on the 1/1
race car.
(c) BODY INTERIOR - Interior must contain at least following 3-dimensional items
: (i) dashboard, (ii) steering wheel, (iii) gear change lever, (iv) painted
fire extinguisher, (v) seat, (vi) painted driver figure with legs, (vii)
painted head/helmet combination in a hard plastic material.
(d) LIGHTS - For races that are partially or completely ran with a night
section, the cars must be equipped with working head- and taillights located at
their original position as on the real 1/1 car. These lights must be visibly
working during the entire period determined as night section and must be
constructed in such a way as to stay illuminated for at least 10 seconds after
the power from the track has been interrupted. The minimum requirements are :
Front lights: minimum two lights, of yellow or white colour, bright beam. Rear
lights: minimum two lights, red colour, diffuse light.
7.1.7. REPAIRS
(a) ONLY ONE BODY PER RACE - It is not allowed to exchange the car's body once a
race has been started.
(b) IMMEDIATE REPAIRS - Following repairs must be carried out within 5 laps from
when the problem first occurred : (i) replacing or refitting the windshield or
rear window, (ii) refitting the rear wing, (iii) refitting the rear diffuser,
(iv) replacing or refitting the wheel insert(s), (v) during night sections,
front and/or rear lights must be repaired as to comply with 7.1.6(d).
Unless specifically allowed by the race direction, all repairs must be done
during racing time, and are not allowed during lane rotation. During track
calls it is allowed to continue repair works already started on a car before
the track call was given.
7.1.8. SANCTIONS & PENALTIES
(a) TYRE DRESSING - Unless specifically allowed by the race direction, any form
of tyre dressing on the handout rear wheels will result in immediate
disqualification.
(b) TYRE CHANGE - During the race, a mandatory tyre change must be done during
the 5th race segment. Non-respect of this rule will result in the loss of 10
per cent of the achieved laps after 5 segments. This penalty does not clear the
competitor of the mandatory tyre change. Any car caught during a technical
inspection, for running below 0.4 mm ground clearance, will have to comply with
the 1 mm ground clearance rule before re-entering the race.
(c) ILLEGAL BODIES - for any car presented at scrutineering, not respecting all
rules concerning the body, it is at the race director's discretion how many
ballast should be applied to the body at the highest point under the front
bonnet.
end.
