Twin Sprint

[Francis C]

Twin Sprints 2009

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 (1% tolerance at post race control will be allowed) {.ie 650cc =160kg (110kg +650/13=110+50=160kg.) 400cc=140.7kg (110+400/13=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 cutout lanyard;
d)   Quick shifter;
e)   Rear sprocket chain guard;
f)   Power Commander or similar.

Version 2.0

[Francis C]

Twin Sprints 2010

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 (1% tolerance at post race control will be allowed) {.ie 650cc =160kg (110kg +650/13=110+50=160kg.) 400cc=140.7kg (110+400/13=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;
l)   Camshafts, but only with items from the same make & model of machine;
m)   Camshaft wheels to allow dialling.

1.8   The following may be added:
a)   Steering damper;
b)   Ride height adjuster;
c)   Ignition cutout lanyard;
d)   Speedshifter gearchange device;
e)   Rear sprocket chain guard;
f)   Power Commander or similar.

Version 2.1