Release of the entry-level "PW50" and "PW80" Bikes for children With 2006 YZ model graphics

June 13, 2005

On June 30, 2005, Yamaha Motor Co., Ltd. (YMC) releases the 2006 models of its children's bikes "PW50" and "PW80" featuring block pattern graphics with the same image as the 2006 YZ models.

The "PW50" is designed as an entry-level model for children ages 3~6 or so (weight under 25 kg) and offers features including (1) automatic engine, (2) lightweight body, (3) shaft drive and (4) the same type of right-left hand brakes as a bicycle. The "PW80" is designed for children ages 7~10 or so (weight under 40 kg) and offers features including (1) an automatic centrifugal clutch and 3-speed transmission that lets children enjoy gear changing without the need for clutch operation, (2) spoke wheels front and rear, (3) Monocross suspension and (4) a front fork with aluminum outer tubes.
(These models cannot be licensed to be ridden on public roads)


"PW50"		"PW80"

Name:	"PW50" "PW80"
Release date:	June 30, 2005
Coloring:	Deep Purplish Blue Solid E (Blue)
Sales plan:	500 units (series total, annual, domestic)

"PW50" Specifications

Overall length x width x height	1,245 x 575 x 715mm
Seat height	485mm
Wheelbase	855mm
Minimum ground clearance	105mm
Dry weight	37kg
Engine type	Air-cooled, 2-stroke, crankcase reed valve
Cylinder arrangement	Single cylinder
Displacement	49cc
Bore x Stroke	40.0 x 39.2mm
Compression ratio	6.0 : 1
Maximum power	1.8kW (2.5PS) / 5,500r/min
Maximum torque	3.5N•m (0.36kgf•m) / 4,500 r/min
Starting system	Kick
Lubrication	Autolube
Fuel tank capacity	2.0L
Engine oil volume	0.35L
Carburetion	VM12
Ignition system	CDI
Primary / Secondary reduction ratio	1.909 / 6.218
Clutch type	Wet, centrifugal automatic
Transmission type	-
Gear ratios	-
Caster / Trail	25°30' / 50mm
Tire size (Front / Rear)	2.50-10 4PR / 2.50-10 4PR
Brake type (Front / Rear)	Drum / Drum
Suspension type (Front / Rear)	Telescopic / Unit swing

"PW50" Feature Map

"PW80" Specifications

Overall length x width x height	1,540 x 640 x 880mm
Seat height	635mm
Wheelbase	1,055mm
Minimum ground clearance	185mm
Dry weight	57kg
Engine type	Air-cooled, 2-stroke, crankcase reed valve
Cylinder arrangement	Single cylinder
Displacement	79cc
Bore x Stroke	47.0 x 45.6mm
Compression ratio	6.6 : 1
Maximum power	3.5kW (4.8PS) / 5,500r/min
Maximum torque	6.3N•m (0.64kgf•m) / 5,000 r/min
Starting system	Kick
Lubrication	Autolube
Fuel tank capacity	4.9L
Engine oil volume	0.95L
Carburetion	VM15
Ignition system	CDI
Primary / Secondary reduction ratio	3.143 / 2.133
Clutch type	Wet multiple-disc and automatic
Transmission type	Constant mesh 3-speed forward
Gear ratios	1st: 3.250, 2nd: 1.812, 3rd: 1.294
Caster / Trail	26°00' / 62mm
Tire size (Front / Rear)	2.50-14 4PR / 3.00-12 4PR
Brake type (Front / Rear)	Drum / Drum
Suspension type (Front / Rear)	Telescopic / Swing arm

"PW80" Feature Map