General Information

Serial #

CSI 010391

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

TUBULAR STEEL FRAME/ CHROMED FRONT & REAR FENDER, FUEL TANK SIDE PANELS, WHEEL RIMS, HANDLE BARS, CHAIN GUARD, EXHAUST PIPES/ METAL PARTS/ SYNTHETIC INDICATOR LIGHT LENSES/ LEATHERETTE SEAT WITH FOAM PADDING/ RUBBER TIRES/ GLASS HEADLIGHT LENS

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

190.0 cm

Width

67.0 cm

Height

104.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Motorized Ground Transportation

Category

Motorcycle vehicles

Sub-Category

N/A

Manufacturer

AKA

Yamaha

Country

Japan

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Quebec

Period

Unknown

Canada

Unknown

Function

GENERAL TRANSPORTATION

Technical

Yamaha's first motorcycle was the 1 YA-1, which was a copy of the German DKW RT125, and had a 125 cc, single-cylinder two-stroke engine. It was launched in February 1955 and the bike won its first race, the Mount Fuji Ascent Race, in July 1955. Yamaha continued producing two-stroke engines until it launched the XS-1 in 1969, with a 650 cc two-cylinder four-stroke engine, using expertise that it gained doing engine development work for Toyota. This motorcycle is an example of a Yamaha two-cylinder, two-storke with a YICS (Yamaha Induction Control System), fuel saving engine.The YICS consists of two seperate chambers, each connected by a hose to a port on each cylinder behind the intake valve. As the piston moves down, the cylinder fills with fresh air and fueld charge. A vacuum is created in the YICS chamber at the same time. When the intake valve closes, part of this charge is drawn into the YICS. When the intake valve reopens the mixture of the YICS shoots back into the cylinder, mixing with and swirling the main intake charge. The swirling charge is then compressed and ignited and burns more completely and produces more power than that of a conventional engine.

Area Notes

Unknown

Details

Markings

STAMPED INTO HEADSTOCK ON RIGHT & CRANKCASE TOP LEFT: `CSI-010391'/ `YAMAHA' PLATE ON BOTH SIDES OF FUEL TANK/ STAMPED INTOCRANKCASES ACCESS CAPS ON BOTH SIDES: `YAMAHA'/ ON PLATE ON FRAME COVER LEFT SIDE IS IN SILVER: `180'

Missing

BATTERY

Finish

FRAME PAINTED BLACK/ BLACK SEAT, TIRES, LEFT FRAME COVER/ UPPER FORKS, UPPER FUEL TANK, HEADLIGHT CASE RED/ CHROMED FRONT & REAR FENDER, FUEL TANK SIDE PANELS, HANDLE BARS, WHEEL RIMS, CHAIN GUARD, EXHAUST PIPES

Decoration

40 CM WIDE WHITE STRIPE DOWN CENTER ON TOP OF FUEL TANK/ FUEL TANK TOP HAS 3 TUNING FORKS [LOGO] STAMPED IN