Aprilia RS 125 (1999-02) vs Vespa Primavera 125 (2015-) vs Ariel VH 500 Red Hunter (1932-59) vs Laverda OR600 Atlas (1988-89)

Comparison technical specifications

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Make:	Aprilia	Vespa	Ariel	Laverda
Model:	RS 125	Primavera 125	VH 500 Red Hunter	OR600 Atlas
Years:	1999-02	2015-	1932-59	1988-89
Engine:	Single cylinder, two stroke, reed valves induction	Four stroke, single cylinder, SOHC, 3 valve	Four stroke, stroke, single cylinder, OHV, 2-valves	Four stroke, parallel twin cylinders, DOHC, 4 valve per cylinder, 180° crankshaft.
Capacity:	125 cc / 7.6 cu in	124.5 cc / 7.6 cub in	497 cc / 30.3 cu in	571.6 cc / 34.8 cu-in
Bore x Stroke:	54 x 54.5mm	52 x 58.6 mm mm	86.4 x 85 mm (after 1936: 81.8 x 95)	76 x 63 mm
Compression Ratio:	14.5:1	10.5:1	6.0:1 (after 1954: 6.8:1)	9.1:1
Ignition:	Electronic	Electronic	Magnet/flywheel	Bosch electronic
Starting:	Electric	Electric	Kick start	Electric
Max Power:	24.8 kW / 34 hp @ 11000 rpm	7.8 kW / 10.6 hp @ 7700 rpm	17.9 kW / 24 hp @ 6000 rpm	50 hp / 36.4 kW @ 7500 rpm
Transmission:	6 Speed	CVT	4-Speed	6 Speed
Final Drive:	Chain	Belt	Chain	Chain
Front Suspension:	Upside-down forks, Ø 40mm	Single arm with coil spring and dual action mono shock absorber	Grider front forks	Air assisted telescopic forks
Rear Suspension:	Monoshock	Hydraulic monoshock	Rigid, springloaded saddle (after 1954: dual shocks)	Single shock
Front Brakes:	Single 320 mm discs, 4 piston caliper	Single Stainless steel 200mm disc, hydraulically operated	Drum	Single 260mm disc 2piston calliper
Rear Brakes:	Single 240 mm disc, 2 piston caliper	Drum, 140 mm, mechanically operated	Drum	Single 230mm disc 1 piston calliper
Dry Weight:	115 kg / 254 lbs	115 kg / 254 lbs	190 kg / 418 lbs	151 kg
Fuel Capacity:	11.5 L / 3.0 US gal	8 Litres / 2.1 US gal	14.8 L / 3.9 US gal	25 Litres / 6.6 US gal