Difference between revisions of "Yamaha YDS-1"
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[[Category:Yamaha motorcycles]] | [[Category:Yamaha motorcycles]] | ||
{{ | {{Motorcycle | ||
|name = | |name = Yamaha YDS-1 | ||
| | |photo=1959 Yamaha YDS-1.jpg | ||
|aka = | |aka = | ||
|manufacturer = | |manufacturer = Yamaha | ||
|parent_company = | |parent_company = | ||
|production = 1959 | |production = 1959 | ||
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|predecessor = | |predecessor = | ||
|successor = | |successor = | ||
|class = | |class = Naked | ||
|engine = Twin cylinder, two stroke, OHV, air-cooled | |engine = Twin cylinder, two stroke, OHV, air-cooled | ||
|bore_stroke = 53.3mm x 53.3mm | |bore_stroke = 53.3mm x 53.3mm | ||
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|fuel_capacity = | |fuel_capacity = | ||
|oil_capacity = | |oil_capacity = | ||
|recommended_oil=Yamalube 10w-40 | |||
|fuel_consumption = | |fuel_consumption = | ||
|turning_radius = | |turning_radius = | ||
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[[Category:Yamaha motorcycles]] | [[Category:Yamaha motorcycles]] | ||
[[Category:1950s motorcycles]] | [[Category:1950s motorcycles]] | ||
Latest revision as of 20:12, 23 November 2019
The Yamaha YDS-1 was a 250cc, 2-stroke, twin cylinder, twin carb, streetbike produced by Yamaha starting in 1959 that had a reputation for blowing away 650cc vertical twins during this time.
Further developing on the sporty performance of the YD-1, this new model mounted a 20hp engine on a steel-pipe cradle frame to achieve unprecedented running performance. Features like the first domestic-made 5-speed transmission and combination type instrument panel with engine tachometer caught the imagination of sports riders, who quickly nicknamed it “Japan’s first sports model.”
YDS1-R[edit | edit source]
The YDS1-R was a race kitted version of Yamaha's new for 1959 street bike. These machines were Yamaha's first effort at building a European style road racer, their previous models were more dirt oriented to suit the Japanese racing scene. These machines were the forerunners of the very successful TD/TZ250 parallel twin racing machines that dominated that 250cc racing class for a number of years.
|
Yamaha YDS-1 | |
Manufacturer | |
---|---|
Production | 1959 |
Class | Naked |
Engine | Twin cylinder, two stroke, OHV, air-cooled |
Bore / Stroke | 53.3mm x 53.3mm |
Horsepower | 17.97 HP (13.4 KW) @ 7500RPM |
Torque | 3.69 ft/lbs (5.0 Nm) @ 6000RPM |
Transmission | Gear box: 4-Speed Final Drive: Chain |
Suspension | Front: Telescopic forks Rear: Swing arm |
Brakes | Front: Drum Rear: Drum |
Front Tire | 3.00-18 |
Rear Tire | 3.00-18 |
Weight | 138.0 kg (wet) |
Recommended Oil | Yamalube 10w-40 |
Manuals | Service Manual |
The Yamaha YDS-1 was a Twin cylinder, two stroke, OHV, air-cooled Naked motorcycle produced by Yamaha in 1959. Max torque was 3.69 ft/lbs (5.0 Nm) @ 6000 RPM. Claimed horsepower was 17.97 HP (13.4 KW) @ 7500 RPM.
Engine[edit | edit source]
A 53.3mm bore x 53.3mm stroke result in a displacement of just 249.0 cubic centimeters.
Drive[edit | edit source]
The bike has a 4-Speed transmission. Power was moderated via the Wet, multiplate.
Chassis[edit | edit source]
It came with a 3.00-18 front tire and a 3.00-18 rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The front suspension was a Telescopic forks while the rear was equipped with a Swing arm.
1959 - 1962 Yamaha YDS-1[edit | edit source]
Further developing on the sporty performance of the YD-1, this new model mounted a 20 hp (15 Kw) engine on a steel-pipe cradle frame to achieve unprecedented running performance. Features like the first domestic-made 5-speed transmission and combination type instrument panel with engine tachometer caught the imagination of sports riders, who quickly nicknamed it Japan’s first sports model.