2011 Aprilia Scooter SR50

2011 Aprilia Scooter SR502011 Aprilia Scooter SR50 Specifications

Engine: Liquid cooled horizontal single cylinder two stroke. Electronic direct fuel injection.

Bore x Stroke: 40 x 39.3 mm

Total displacement: 49 cc

Compression ratio: 11.5:1

Ignition: High power inductive ignition

Starting: Electric

Generator: Flywheel-magneto, 165 W – 12 V.

Gear box: Continuous automatic variator

Clutch: Automatic centrifugal dry clutch

Primary drive: V belt

Final drive: Gears in oil bath.

Frame: Split single cradle frame in high tensile strength steel tube

Front suspension: Hydraulic fork, 90 mm wheel travel

Rear suspension: Engine unit acting as swingarm; frame linkages on two radial silent block mountings; wheel travel 70 mm. Rear: 190 mm stainless steel disc; racing caliper with twin opposed 30 mm pistons

Brakes: Front Brake 7.5” stainless steel disc; racing caliper with twin opposed 1.3” pistons Rear Brake 7.5” stainless steel disc; racing caliper with twin opposed 1.2” pistons

Wheels: Five spoke, light alloy wheels front and rear: 3.50 x 13"

Tyres: Tubeless. Front and rear: 130/60 x 13”

Dimensions: Overall length: 1860 mm Overall width: 705 mm Overall height: 1120 mm Seat height: 32.2" Wheelbase: 50.78"

Fuel tank capacity: 1.85 gals

Intake: Reed valve

Other: Fuel injection Electronically controlled, air assisted, direct injection into the combustion chamber. Injector type EFI low flow injector. Direct injection system External opening, SMD 8 micron medium spray. Pressure regulator Pressure differential maintained at 2.5 bar. Throttle body Ø 18 mm throttle body with integrated TPS (Throttle Position Sensor). Air compressor Driven off crankshaft, lubricated by air-oil mix in crank chamber. Fuel pump 6.5 – 8 bar, high pressure pump with low electrical power absorption, < 0.5 A. Electronic Control Unit 8 Hz clock speed, 22 pin.

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