Yamaha TZ750

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Yamaha TZ750
Retromobile 2018 - Yamaha TZ 750 - 1977 - 001.jpg
Yamaha TZ750 (1977)
Manufacturer Yamaha Motor Company
Production1974–1979
Engine 747 cc (45.6 cu in) two-stroke inline-4
Bore / stroke 66.4 mm × 54 mm (2.61 in × 2.13 in)
Power 120 hp (89 kW) @ 10,500 rpm
Wheelbase 1,390 mm (55 in)
Weight152 kg (335 lb) (dry)
Related Yamaha TZ 350

The Yamaha TZ750 is a series production two-stroke race motorcycle built by Yamaha to compete in the Formula 750 class in the 1970s. Motorcyclist called it "the most notorious and successful roadracing motorcycle of the 1970s". [1] Another journal called it the dominant motorcycle of the era, noting its nine consecutive Daytona 200 wins, starting in 1974. [2]

Contents

Another triumph of note was when Joey Dunlop rode to victory in the 1980 Classic TT during the process of which he upped the lap record on the Snaefell Mountain Course to an average speed of 115.22 mph (185.43 km/h). [3] This is also the fastest recorded lap of the Mountain Course by a Yamaha 750cc two-stroke machine.

It was rated by journalist Kevin Cameron as one of the five most influential motorcycle designs: its monoshock suspension, high-strength frame and wide tires were necessary to handle the high engine output, and became standard for sportbikes. [4]

Twin TZ750 engines powered the Silver Bird motorcycle land-speed record setting streamliner motorcycle, the first to break 300 miles per hour (480 km/h).

Specifications

TZ 750 ATZ 750 BTZ 750 CTZ 750 DTZ 750 ETZ 750 F
Year197419751976197719781979
Displacement694 cm³747 cm³747 cm³747 cm³747 cm³747 cm³
Bore/stroke64 × 54 mm66,4 × 54 mm66,4 × 54 mm66,4 × 54 mm66,4 × 54 mm66,4 × 54 mm
Power90 PS (89 hp)
@ 10,500 RPM
90 PS (89 hp)
@ 10,500 RPM
90 PS (89 hp)
@ 10,500 RPM
120 PS (120 hp)
@ 10,500 RPM
120 PS (120 hp)
@ 11,000 RPM
120 PS (120 hp)
@ 11,000 RPM
Wheelbase1407 mm1407 mm1407 mm1390 mm1390 mm1390 mm
Steering angle (grad)
636363646464
Trail in mm
979797
Dry weight in kg157157157152152152
Production (units)21346403016276

[5]

Museum examples

A 1974 example is displayed in the Communication Plaza at the corporate headquarters of the Yamaha Motor Company in Iwata, Shizuoka, Japan. [6] Another 1974 TZ750A is at the Barber Vintage Motorsports Museum in Alabama. [7]

See also

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References

  1. Mitch Boehm (February 23, 2009), "Yamaha TZ750: Meeting The Monster", Motorcyclist
  2. Kel Carruthers. "Yamaha's TZ750: Where Legends Began". superbikeplanet.com. Archived from the original on 21 December 2010.
  3. "TT 1980 Classic TT Race Results - iomtt.com: The World's #1 TT Website". www.iomtt.com. Retrieved 21 December 2022.
  4. Kevin Cameron (January 19, 2012), "Yamaha TZ750 - The FIVE GREATEST", Cycle World
  5. MacKellar 1995, p. 188.
  6. Communication Plaza Collection items - 1974 TZ750, Yamaha Corporation
  7. Phil Aynsley (March 31, 2017), "Barber Vintage Motorsports Museum", mcnews.com.au

Sources

Further reading