APRILIA RX 50 RACING - 2003 Manual page 76

LUBRICATION
Gearbox and primary transmission . 820 cm
COOLING
Cooling circuit capacity ................................. 0,9
Minimum operating temperature .......................-17°C
FRAME
High-resistance one-beam structure, split over the
exhaust
Steering head angle ............................................. 26°
REAR FORK
Made of rectangular-profile steel, mounted on
antifriction bushings
SUSPENSIONS
Front...................................... upside-down Æ 40 mm
Travel ............................................................ 260 mm
Rear .......................................... Gas-filled adjustable
Travel ............................................................ 100 mm
Rear wheel stroke ......................................... 260 mm
76
3
of oil (*)
(60% antifreeze + 40% water)
monoshock absorber
BRAKES
Front.........................................disc brake Æ 230 mm
Rear .........................................disc brake Æ 220 mm
l
(*)
TYRES
Front.................................... 80/90 x 21" Enduro-type
Inflation pressure (off-road).............................1.0 bar
Inflation pressure (mixed road surface)...........1.5 bar
Inflation pressure (asphalt)..............................1.6 bar
Rear .................................. 110/80 x 18" Enduro-type
Inflation pressure (off-road).............................1.1 bar
Inflation pressure (mixed road surface)...........1.6 bar
Inflation pressure (asphalt)..............................1.8 bar
RIMS
Front.............................................................21 x 1,6"
Rear ...........................................................18 x 1,85"
(*) see ≈LUBRICANT CHART∆
with hydraulic control
and floating caliper with two parallel pins
with hydraulic control
with two opposing pins Æ 28 mm
and fixed caliper