Twin Sprint Roadracing Class
You can now use SLICK tyres.
This new class is the perfect class for someone
starting out in roadracing. The costs involved with this class are much lower
than most others. The machines available to compete in this class are generally
cheaper than the others. Running costs are also less. Tires are one of the
biggest costs in racing and with this class the tire wear is very low when
compared with supersport, superstock and superbike.
Machines available are;
Kawasaki ER6 (contact Cosways MC for information)
Suzuki SV650
Ducati monster 620
Hyosung GT650R
Very few modifications are allowed to the machines. Most of
the allowed mod's are for safety with a few to make them a better racing
machine. No internal engine mod's are allowed. Some suspension mod's are allowed
as well as changing the exhaust system and jetting.
Information about prepping your Suzuki SV650 can be found
on the SVdownunder forum. http://www.svdownunder.com/forums
Rules (version
2.0)
1.1
Subject to the required and permitted alterations set out below, Twin
Sprints must:
a) Carry
all relevant compliance plates, (ADR);
b)
Be eligible for
registration in all states and territories in which they complete;
c)
Be of a make and
model lawfully sold in Australia;
d)
Be as
constructed by, or modified with the approval of, the manufacturer so as to
conform with Australian design laws for normal road use; and
e)
Be two-cylinder
four-stroke engine of a capacity between 399-699cc.
1.2
Tyres: Slicks
maybe used.
1.3
To be permitted
to compete, a machine, without rider, empty of fuel, but with all other fluids
at optimum levels, must weigh no less than 110kg plus the engine capacity
divided by 13 (2% tolerance at post race control will be allowed) {.ie 650cc
=160kg, (110kg +650cc/13=160kg.) 400cc=140.7kg, (110+400cc/13=140.7kg).}
1.4
The following must be removed:
a)
Headlamp;
b)
Tail
lamp;
c)
Reflectors;
d)
Horns;
e)
Passenger
footrests;
f)
Traffic
indicators;
g)
Rear
vision mirrors;
h)
Centre
and side stands;
i)
Registration
plate / bracket and label holder;
Any sharp edges left by the removal of these components must be protected by a
rolled edge or beading of minimum 3mm diameter.
1.5
Engine and
gearbox breathing hoses and tubes, and the radiator overflow bottle vent, must
exhaust into the airbox to the rear of the carburetor intakes. The lower airbox
breather tube must be blocked.
1.6
The following
maybe removed:
a)
Passenger
handholds and footrests assemblies;
b)
Rear
number plate bracket;
1.7 The
following may be replaced or modified:
a)
Fairings,
screen, rear body work, seat, mudguards, tank covers and frame side covers, but
replacements must be the same in shape and appearance as the original, if that
model does not come originally fitted with a full fairing then one can be fitted
from a different model but the same manufacturer;
b)
Mounting
bracket for fairing, screen and instruments;
c)
Spark
plug type, leads and caps;
d)
External
gearing
e)
Brake
pads, linings, brake hoses and master cylinder;
f)
Exhaust
system
g)
Front
suspension springs and fork internal components but external appearance must
remain unchanged, except for the fitment of external adjusters;
h)
Rear
suspension springs and shocks;
i)
Fuel
metering jets and air filter;
j)
Instruments;
k)
Handle
bars and handle bar controls.
1.8 The
following may be added:
a)
Steering
damper;
b)
Ride
height adjuster;
c)
Ignition
cut-out lanyard;
d)
Quickshifter;
e)
Rear
sprocket chain guard;
f)
Power
Commander or similar.
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