Honda VFR 750 R
The Honda VFR 750 R is a sports motorcycle of the Japanese car manufacturer Honda, which was produced from 1987 to 1992 in Hamamatsu.
History
The Honda VFR 750 R with the factory code RC30 arose from the Honda VFR 750 F and was one of the first developed specifically for the racing series motorcycles. This was reflected both in the selected materials (eg, titanium connecting rods ), as well as the price: At the launch in 1988, it was about twice as expensive as most other bikes of the vintage.
By 1990 the factory of Hamamatsu about 3000 were individually produced by a special team. Most were on the track for use, 20 years later, only about 25 % of them were obtained.
Due to their reliability, Honda won so immediately the Superbike World Championship and dominated for years the race for the Tourist Trophy on the Isle of Man.
Technology
Motor
The four overhead camshafts were driven by two gear cascade with four gears. The roller-mounted camshaft opened the valves, their stems had only 4.5 millimeters in diameter bucket tappets.
Landing gear
The rear wheel was out consuming with a single-sided swingarm.
Technical data (standard version )
- Motor Engine size: 748 cc, four-cylinder, 90 - degree V
- Power: 82 kW / 112 PS
- Torque: 69 Nm at 10.500/min
- Compression ratio: 11:1
- Bore × Stroke: 70.0 × 48.6 mm
- Valves per cylinder: 4
- Tappets
- Carburetor: Keihin VDH 0B
- 6 courses ( 2.400, 1.941, 1.632, 1.435, 1.292, 1.192 )
- Primary reduction ratio: 1.939, final drive ratio: 2.5
- Wheelbase: 1405 mm
- Steering head angle: 65 degrees 30 '
- Trail: 91 mm
- Travel: 120 mm front / 130 mm rear
- Sided swing arm with central nut
- Seat Height: 785 mm
- Front: two disc brakes 310 mm
- Back: a disc brake 220 mm
- Front: 120/70 V17 V270
- Rear: 170/60 VR18 V270
Technical data ( race versions )
- HRC TT- F1; ( Superbike ) Kit 1988 Power: 133 kW PS/99; (125 PS/92 kW) at 12.500/min
- Torque: 81 Nm at 10.500/min
- Carburetor: Keihin constant pressure: 38 mm; ( 35.3 mm)
- Weight: 150 kg
- HRC TT -F1 Kit 1989 Power: 135 hp at 12.500/min
- Torque: 82 Nm at 11.000/min
- Carburetor: Keihin constant pressure: 38 mm
- Weight: 150 kg
- HRC Superbike Kit 1991 Power: 135 PS/99, 2 kW at 13.000/min
- Torque: 82 Nm at 11.000/min
- Carburetor: Keihin constant pressure: 35.3 mm
- Weight: about 165 kg
- AMA factory race bike in 1992 Power: 150 hp/110 kW at 13.800/min
- Carburetor: Keihin flat slide: 41 mm
- Weight: about 160 kg
- Suzuka 8h -Racer in 1994 Power: 150 hp/110 kW at 14.000/min
- Carburetor: Keihin flat slide: 41 mm
- Weight: about 140 kg
Successes and their drivers
Swell
- HRC'88 Racingkit Manual: Honda VFR750R Racing'88 RACING KIT SET -UP MANUAL HRC Japan.
- HRC'89 Racingkit Manual: Honda VFR750R Racing'89 RACING KIT SET -UP MANUAL HRC 00X38 - NL0 -820, Japan.
- HRC'91 Racingkit Manual: Honda VFR750R Racing'91 RACING KIT SET -UP MANUAL HRC 00X38 - NL0 -7000, Japan.