Yamaha TZ 350
The Yamaha TZ 350 was a racing motorcycle produced by the Yamaha Motor Company from 1973 to 1981 for competition in the Grand Prix motorcycle racing series. The motorcycle was powered by a 350 cc two stroke engine.
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| Manufacturer | Yamaha |
|---|---|
| Production | 1973 (TZ 350A) till 1981 (TZ 350 H) |
| Class | Grand Prix motorcycle racing |
| Engine | 347 cc (21.2 cu in) air-cooled, two-stroke parallel twin |
| Bore / stroke | 64 mm × 54 mm (2.5 in × 2.1 in) |
| Top speed | over 289 km/h (180 mph) |
| Power | 60 bhp (45 kW) @ 9,500 rpm (A) to 72 bhp (54 kW) @ 11,000 rpm (H) |
| Torque | 35 N⋅m (26 lbf⋅ft) @ 9,440 rpm |
| Transmission | 6-speed |
| Suspension | Rear: Twin Shock (A&B); Mono-Shock (C-H) |
| Brakes | Front: 2 x Twin L-Shoe (A&B); Disc (since Model C) Rear:1 x Single L-Shoe (A&B) ; Disc (since Model C) |
| Tires | Front: 2.75" x 18" (A&B); 3.0" x 18" (Since C) Rear: 3.0" x 18" (A-E);3.5" x 18" (F-H) |
| Rake, trail | 27.5°, 4.3 inches (110 mm) (Model A-E) |
| Wheelbase | 1,331 mm (52.4 in) (diff per model) |
| Dimensions | L: 1,946 mm (76.6 in) W: 510 mm (20 in) (between 510 and 635) |
| Weight | 115 kg (dry) |
| Fuel capacity | 23 L (5.1 imp gal; 6.1 US gal) |
Model history
Production of the motorcycle started in 1973 with Model A (60 bhp @9,500rpm) and ended 1981 with Model H (72 bhp @ 11,000rpm) when the GP series came to an end.[1]
Production Racer were series manufactured racing bikes. Two Yamaha TZ 350 models are part of the motorcycle collection of the Technikmuseum Speyer.[2]
Yamaha often leveraged the marketing of their RD and RZ series road motorcycles by referencing the TZ series. See also: RD250, RD350, RD400, RZ250, RZ350. The TZ motors provided the inspiration and engineering basis of Yamaha's contemporaneous road going two strokes.