Close ratio?

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vfr

Joined
Jul 16, 2009
Messages
2
Hi i'm from Singapore and new here. Need to know whether the RSV4 comes with close ratio gear box? Thks.
 
Does this help?

APRILIA RSV4 FACTORY: Technical Specifications

Engine type: Aprilia longitudinal 65° V-4 cylinder, 4-stroke, liquid cooling system, double overhead camshafts (DOHC), four valves per cylinder

Bore and stroke: 78 x 52.3 mm

Total engine capacity: 999.6 cc

Compression ratio: 13:1

Maximum power at crankshaft: 180 CV (132.4 kW) at 12,500 rpm

Maximum torque at crankshaft: 115 Nm at 10,000 rpm

Induction and fuel system: Airbox with front dynamic air intakes. Variable length intake ducts controlled via ECU.

4 Weber-Marelli 48-mm throttle bodies with 8 injectors and latest generation Ride-by-Wire engine management.

Choice of three different engine maps selecby the rider with bike in motion: Track | Sport | Road

Ignition: Magneti Marelli digital electronic ignition system integrated in engine control system, with one spark plug per cylinder and “stick-coil”-type coils

Exhaust system: 4 into 2 into 1 layout, single oxygen sensor, lateral single silencer with engine control unit-controlled butterfly valve and integrated trivalent catalytic converter (Euro 3)

Lubrication: Wet sump lubrication system with oil radiator and two oil pumps (lubrication and cooling)

Gearbox: 6-speed cassette type gearbox

1st: 39/15 (2.6)
2nd: 33/16 (2,063)
3rd: 34/20 (1.7)
4th: 32/22 (1,455)
5th: 34/26 (1,308)
6th: 33/27 (1,222)

Clutch: Multi-disc oil-bath, with mechanical slipper system

Primary drive: Straight cut gears and integrated flexible coupling, drive ratio: 73/44 (1,659)

Secondary drive: Chain, Drive ratio: 40/16 (2,5)

Chassis: Twin-spar adjustable aluminium frame, with castings and pressings. Envisaged adjustments:

·headstock position and rake
·engine height
·swingarm pin height
·Öhlins adjustable steering dumper

Front suspension: Öhlins Racing upside-down fork, 43-mm stanchions (with Tin surface treatment). Low profile forged aluminium radial caliper mountings. Completely adjustable spring preload and hydraulic compression and rebound damping. Wheel travel: 120 mm

Rear suspension: Twin sided aluminium swingarm; mixed low thickness and sheet casting technology.
Öhlins Racing monoshock with piggyback with completely adjus: spring preload, wheelbase and hydraulic compression and rebound damping. APS progressive linkages. Wheel travel: 130 mm

Brakes:
Front: Dual 320-mm diameter floating stainless steel disc with lightweight stainless steel rotor and aluminium flange with 6 pins. Brembo monobloc radial callipers with 4 34-mm opposite. Sintered pads. Radial pump and metal braided brake hose

Rear: 220-mm diameter disc; Brembo floating caliper with two 32-mm isolated pistons. Sintered pads. Pump with integrated tank and metal braided hose

Rims:Aprilia forged aluminium alloy rims, completely machined, 5 split spokes.

Front:3.5″X17″
Rear: 6″X17″

Fuel Tank: 17 litres (4-litre reserve included)

Dimensions (default settings):

Max. length: 2040 mm
Max. width: 735 mm (at the handlebar)
Max. height: 1120 mm
Min. height from the ground: 130 mm
Saddle height: 845 mm
Center to center distance: 1420 mm
Trail: 105 mm
Steering angle: 24.5°
Curb weight (dry): 179 kg
 
But there's no indication whether it is close ratio or not. Perhaps someone can interprete that gear readings. Thks.
 
as its basically a race bike why ask???...just change sprockets if your that bothered
 
my guess would be yes. google brought up this: V-4 engine is ultra-compact, which allows the entire bike to be 250cc GP-sized. Six-speed gearbox is cassette-type, expediting internal gear-ratio changes for racing. Take a look at the last of the facory's g'box ratio's (factory had close-ratio g'box) if they're similar (its a twin so may be slightly different) then you have your answer
 
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