BMW R 80 ST
| BMW | |
|---|---|
|
|
| R 80 ST | |
| Manufacturer | BMW |
| Sales description | BMW R 80 ST |
| Production period | 1982 to 1984 |
| class | motorcycle |
| design type | Tourer |
| Motor data | |
| Air-cooled boxer engine with two cylinders | |
| Displacement (cm³) | 797 |
| Power (kW / PS ) | 37/50 at 6500 min -1 |
| Torque ( N m ) | 57 at 5000 min -1 |
| Top speed ( km / h) | 172 |
| transmission | 5 courses |
| drive | Cardan drive |
| Brakes | front Ø 260 mm disc brakes, rear Ø 200 mm drum brake |
| Wheelbase (mm) | 1446 |
| Dimensions (L × W × H, mm): | 2180 × 820 × 1150 |
| Seat height (cm) | 85 |
| Empty weight (kg) | 197 |
| successor | BMW R 80 |
The BMW R 80 ST is a motorcycle model from the manufacturer BMW . It is the street-oriented sister model of the BMW R 80 G / S travel enduro .
The most important technical adjustments to road use were a 19 "front wheel, road tires and shorter suspension travel, which, however, created a significantly higher ground clearance than the classic touring motorcycles of this brand. This and the low weight of only 180 kg then also led to dynamic handling. Otherwise, the main difference between the ST and the off-road model was that it had a mudguard directly above the front wheel and the headlight and instrument panel, which was identical to that of the R45 / R65.
Their boxer engine with 797 cc displacement and 37 kW (50 hp) came from the BMW R 80/7 .
The model was built from 1982 to 1984 in 5953 copies. There was no direct successor, but the classic street models BMW R 80 (from 1985 with Monolever) and BMW R 100 R with (from 1992 with Paralever ) followed.
Technical specifications
The frame, tank and seat are from the BMW R 80 G / S , the fork tubes and the fork bridge from the BMW R 100 , the sliding tubes and the cockpit from the BMW R 65 and the fenders from the BMW R 45 . engine
- Engine type four-stroke , two - cylinder boxer engine , air-cooled
- Bore 84.8 mm
- Stroke 70.6 mm
- Displacement 797.5 cm³
- Rated power 50 HP (37 kW ) at 6500 min -1
- Maximum torque 59 Nm at 3500 min -1
- Compression ratio 8.2: 1
- Valves each 2, hanging
- Valve control ohv, via tappets, bumpers and rocker arms
- Mixture preparation 2 equal pressure carburettors
- Engine lubrication wet sump
Power transmission
- Clutch disc, dry, with translated cup spring
- Number of gears 5
- Switching claw switching (ratchet foot switching )
- Gear ratio 4.4 / 2.86 / 2.07 / 1.67 / 1.50: 1
- Rear wheel ratio 1: 3.364
- Bevel / ring gear 11/37 teeth
Electrical system
- Ignition Contactless electronic ignition ( Bosch )
- Alternator Bosch 280 W
- Starter Bosch 700 watts
- Spark plug Bosch W 7 DC / Beru 14 - 7 DU / Champion N 9 YC
landing gear
- Frame Double-loop tubular steel frame, screwed-on rear section
- Front suspension telescopic fork with hydraulic shock absorbers
- Rear suspension BMW single-sided swing arm (Monolever)
- Suspension travel front / rear 175/153 mm
- Front rim 1.85 × 19 WM
- Rear rim 2.50 × 18 WM
- Front tires 100/90 H 19
- Rear tires 120/90 H 18
- Front brakes single disc brake Ø 285 mm
- Rear brakes Simplex drum brake Ø 200 mm
mass and weight
- Length 2180 mm
- Width 820 mm
- Height 1150 mm
- Wheelbase 1446 mm
- Tank capacity 19.0 l
- Empty weight, fully fueled 192 kg
- Permissible total weight 398 kg
- Fuel consumption 4.7 l / 100 km (at a constant 90 km / h )
- Acceleration 0 - 100 km / h 5.7 s
- Maximum speed 164/176 km / h sitting / lying
criticism
“Nevertheless, the ST is indisputably the handiest machine in its class. It can be guided through curves so playfully that you think you're on a much smaller machine. The comparison with the G / S is obvious, even if the ST is not sensitive to steering influences. "
See also
Web links
- http://www.bmw-motorrad.de
- http://www.micapeak.com/bmw/gs/
- http://motorclassic.gmxhome.de/gs.htm
- http://www.w-onroad.de/gs/
Individual evidence
- ↑ A giant step forward . In: Motorrad BMW Spezial . Edition 2/2012, p. 54.
- ↑ Horst Vieselmann: Fulfilled wishes . In: motorcycle . Issue 23/1982, November 10, 1982, p. 10.
