Society of Automotive Engineers of Japan, Inc. 240 Landmarks Top JSAE HOME
240 Landmarks of Japanese Automotive Technology
left image
240 Landmarks TopMotorcycles > Yamaha Passol S50
 Yamaha Passol S50
image
image
 
A motorcycle may have little direct appeal to women for a number of reasons: they have to straddle it; they cannot ride it while wearing a skirt; the seat is high; and the body is large and heavy.
Yamaha gave careful consideration to the reasons why women hesitate to ride motorcycles and developed the following features for the Passol.
1. A step-through body
2. A front cover
3. A forced-air-cooled engine
4. An oil bath chain
Because it incorporated these features and its main dimensional specifications were designed for women, the introduction of the Passol created an explosive increase in the number of female users.
To make the step-through vehicle concept a reality, the engine was reoriented so that its cylinders were vertical, and forced-air cooling was implemented.
This engine layout became the basis for the scooter engines that were developed from then on.
dot
Storage location:YAMAHA COMMUNICATION PLAZA (2500, Shingai, Iwata・shi, Shizuoka・ken 438・8501)
dot
Year manufactured:1977
dot
Manufacturer:Yamaha Motor Co., Ltd.
dot
Classification:Mass-production vehicle
dot
Current status:On public display: static
dot
Vehicle name / Manufacture
Vehicle name:Yamaha Passol
dot
Model:Yamaha 2E9 (S50)
dot
Company name:Yamaha Motor Co., Ltd.
dot
Vehicle type/usage:"Soft bike" type scooter
dot
Location of actual vehicle/replica:Communication Plaza
dot
Year manufactured:1977
dot
Designed by:Yamaha Motor Co., Ltd.
dot
Model / Weight
Style:Scooter
dot
Passenger capacity:1
dot
Weight:45 kg
dot
Front axle weight:17 kg
dot
Rear axle weight:28 kg
dot
Points of interest, topicality:Precursor of the scooter boom
dot
Body / Size
Overall length:1515 mm
dot
Overall width:605 mm
dot
Overall height:925 mm
dot
Headlamp type:17 W, 51 cm2
dot
Tire size (front):2.50-10-4PR
dot
Tire size (rear):2.50-10-4PR
dot
Body / Axle / Driving / Others
Frame:Under bone
dot
Suspension type (front):Telescopic
dot
Suspension type (rear):Unit swing
dot
Wheelbase:1075 mm
dot
Brakes (front):Mechanical leading trailing
dot
Brakes (rear):Mechanical leading trailing
dot
Damper (front):Cylindrical single-acting
dot
Damper (rear):Cylindrical single-acting
dot
Engine/ Size / Power
Type:Air-cooled 2-stroke gasoline
dot
Cylinder arrangement:Single cylinder
dot
Carburetor:VM125C
dot
Bore x stroke:40.0×39.7
dot
Displacement:49 cc
dot
Ignition system:CDI
dot
Max. power/r.p.m.:2.3 ps/5000 rpm
dot
Supercharger:None
dot
Lubrication method:Separate lubrication
dot
Start method:Kick
dot
Fuel tank capacity:2.3 L
dot
Drive-train
Clutch type:Automatic centrifugal
dot
Performance
Fuel economy rating:75 km/L (at 30 km/h)
dot
240 Landmarks Top Motorcycles > Yamaha Passol S50 page top
COPYRIGHT (C) SOCIETY OF AUTOMOTIVE ENGINEERS OF JAPAN, INC. ALL RIGHTS RESERVED.