Gilera 633721 - Wheels and Tyres

Specification Desc./Quantity
Battery Dry-cell lead-acid battery, 12V-14Ah
Generator Three-phase alternating current
Frame and suspensions
CHASSIS AND SUSPENSIONS
Specification Desc./Quantity
Chassis Welded steel pipes with pressed sheet metal stiffening
Front suspension Hydraulic telescopic fork with diameter 41 mm stems
Front fork max. stroke 104 mm
Rear suspension
Type "Power drive": Shock absorber (with double-
acting helicoidal spring and adjustment of the
spring preload in 7 positions) mounted in horizon-
tal position, connected to a connecting rod pivoted
to a strut with variable length.
By varying the length of the strut it is possible to
modify the geometry and balance of the rear axle
(15 positions).
The motor has a fixed connection to the frame by
means of a shaft (direct link).
Brakes
BRAKES
Specification
Desc./Quantity
Front brakes Twin discs of stainless steel, dia. 260 mm, with floating calliper
and twin 28 mm diameter plungers (Brembo) at front right and
twin 26 mm diameter plungers (Brembo) at front left.
Rear brakes Disc of stainless steel, dia. 240 mm, with fixed calliper and two
opposed 34 mm diameter plungers
Wheels and tyres
WHEELS AND TYRES
Specification
Desc./Quantity
Rims in light alloy: Front 3.50 x 15"
Rims in light alloy: Rear 4.50 x 14"
Rear tyres Bridgestone 160/60-R14" Tubeless 65H
Front tyres Bridgestone 120/70-R15" Tubeless 56H
Tyre pressure (cold) front 2.1 bar
Tyre pressure (cold) rear 2.3 bar (2.5 bar with passenger)
N.B.
CHECK AND ADJUST TYRE PRESSURE WITH TYRES AT AMBIENT TEMPERATURE. ADJUST
PRESSURE ACCORDING TO THE WEIGHT OF RIDER AND ACCESSORIES.
CAUTION
IT IS MANDATORY TO ADOPT EXCLUSIVELY "S" CLASS TYRES, WHICH GUARANTEE COR-
RECT VEHICLE PERFORMANCE AT THE DIFFERENT SCOOTER SPEEDS. USING ANY OTHER
TYRE MAY RESULT IN VEHICLE INSTABILITY. IT IS ADVISABLE TO USE TYRE TYPES REC-
OMMENDED BY PIAGGIO.
Characteristics Nexus 500 euro 3
CHAR - 10