…_.._
·-….__,
·service-Informatio&n
Group 00 February Bulletin No:
Equipment Advice 1983 00 028 83 (20 I 9)
– For U.S.A. and Canada Only –
RE: NEWB MWM OTORCYCLME ODELSF ROMM ODELY EAR 1983 ON
Dear Dealer:
Starting from the plant vacation shutdown in 1982, the BMW
range of motorcycles has been enlarged to include the
R80ST and R80RT.
Please refer to the accompanying descriptions to obtain the
principal
-technical data
-maintenance instructions
-details pf special accessories (
\~\;fi:tt•,•..- ., _._ : . •’ t/ ;i,- •C • .•. ,, , which y9u.i,,~:r:idy chir}Ji~;:v_iCe. team wi11· need/. • ..
~-•-; <~1 /il:~i-~~i.l l:§!~r~~~~~:tr~~::i,•~,,.,,, . .;• ; fW’·~·~~ r ·: . – -.- ::~ r•·
On all models,·,( th’.e::frame number is no longer stamped into
the steeril).g. hea~,•.,·i~•-;rt.i_~ ;n~w_ s tamped into. ‘l:.}1e right lower
frame looi?J~ab6ve~.J:lli:t(c·”rst~anndt’e.:mfro unti. ;”.’.PJi’.cfsh·a “nge,.
has taken place ·.du”rihg> the autumn _:of 1982-//s, _ ··•:::.
• •.. .·’ I •:.
Yours truly·; ;
~OFrd AMERICA,
INC.
Herb Neas
National Service Manager
Enclosure: Descriptions
‘lease· route and initial before filing
(
,.{
\
2
Bright chromium plate on exhaust system, cylinder guard
hoop, left side
Saddlebag holder an~ luggage grid
Kick starter as special equipment only1 electric starter
standard equipment
Distinctive color scheme for this model, (choice of two
colors):
-spheric silver with red stripe
-red metallic with silver stripe
Saddlebag case at left (new version only, with modified base;
previous left cases will not fit) 1
Special accessories – as for RSOG/S
(Exceptions: Saddlebag case holders and 11Touring 11 cases now
as a pair. Special equipment option of
revolution counter and cylinder guard hoops
now inappropriate. Special equipment option
of kick starter is added.)
Engine:
Number of Cylinders:
Displacement, effective:
Torque:
– at engine speed:
Bore x stroke:
Compression ratio:
Mixture preparation and
control:
Aircooled two-cylinder four-stroke
horizontally opposed unit with
overhead valves in inverted V layout1
light alloy construction, with
“Galnikal 11 coated aluminum cylinder·
barrels. Single-piece forged
crankshaft with plain bearings.
Two
797.5 cm3
56.7 Nm (41.8 lb.ft.)
5000/min
84.8 X 70.6 mm
8.2 : l
Two constant-depression carburetors,
barrel diameter 32mm, with coldstarting
device
Left carburetor type:
Right carburetor type:
Barrel diameter:
V 64/32/305
V 64/32/306
32mm
‘–
BMW R80ST
The following specification details on the R80ST differ from
the G/S model:
New design of front fork
19-inch front wheel
Different front mudguard
Headlight diameter 160mm (6.3 in)
Twin instrument cluster with crash pad
Touring handlebars
Fuel tank with recessed, lockable cap
Aluminum footrests with rubber covering
Redesigned exhaust-pipe cover panel
Monoshock spring-damper strut for rear wheel with 153mm (6.02 in)
travel
Seat height 845mm (33.3 in)
Deep oil sump and lower oil pump suction hea~
Low-profile tires (100/90 H 19 and 120/90 H 18)
Cylinder guard hoop with prop stand as standard equipment
l_j(
I \
Ignition System:
Coil:
Spark plugs:
Spark plug electrode
gap:
Alternator:
f:tarter motor:
Fuel tank:
Fuel tap:
Exhaust system:
Exhaust pipe diameter:
Clutch:
Clutch plate diameter:
Effort required at clutch
lever:
Gearbox:
Oil content:
4
Breakerless transistorized coil
ignition (TSZ h) with centrifugal
timing control (adjustable).
Protected location in separate
ignition box. Maintenance-free.
Adjustment data as for R80G/S.
12 V, twin-spark
14 mm dia., long thread
Bosch
Beru
Champion
W 7 D
14-7 D
N 10 Y
0.6 + 0.1 mm (0.024 + 0.004 in)
280 W
Sliding-engagement type, 0.7 kW
19 1 (4.18 U.S. gal) capacity, sheet
steel, with internal corrosion
protection
With reserve position; quantity of fuel
in reserve app. 2 1 (3.5 U.S. pint)
2 in 1, with primary expansion chamber and
high-mounted main silencer at left;
polished chromium-plated finish
35 mm (1.38 in)
Single dry plate with increased-leverage”–diaphragm
spring
165 mm (6.5 in)
50 … 70 N (110 … 154 lbf)
5-speed, flanged to engine block, with
claw-pattern shift and integral shock
damper
0.8 1 (1.4 U.S. pint) brand-name hypoid
gear oil, API Class GL 5
-above 5°C (41°F): SAE 90
-below 5°C (41°F): SAE 80
Fuel requirement:
Octane number:
Valve gear:
Valve timing:
Valve diameters:
-inlet:
-exhaust:
Valve clearances:
-up to 1000 km (app. 630
-inlet:
-exhaust:
-after 1000 km (app. 630
-inlet:
-exhaust:
Engine oil content:
if oil filter is
renewed:
Engine oil viscosities:
Oil pump:
Theoretical flow rate at
Nmax:
Oil filter:
Air cleaner:
3
Main jet:
Needle jet:
Jet needle No.
Needle position:
Idle jet:
Idle air jet:
148
2.64
46-241
4
45
1 mm
Leaded or unleaded
RON= 91 R & M = 87
(0.04 in) diam.
Camshaft driven by chain and sprockets;
valves operated by light alloy pushrods
and rockers
Inlet opens: 16° before TDC
Inlet closes: 44° after BDC
Exhaust opens: 56° before BDC
Exhaust closes: 4° after TDC
[at valve clearances of 2 mm (0. 079 in(”
42 mm (1.654 in)
38 mm (1.496 in)
miles)
0.15 mm (0.006 in)
0.20 ll1Il\. (0.008 in)
miles)
0.10 mm (0.004 in)
0.15 mm (0.006 in)
2.25 1 (3.96 U.S. pint)
2.5 1 (4.4 U.S. pint)
Please refer to the motorcycle’s rider’s
handbook – illustration of viscosity
thermometer.
Trochoid pattern (Eaton system)
1400 1 (308 U.S. gal)/h at 6000/min
and 4.5 bar pressure
”Micronic” filter element
“Micronic” pancake-type element
(
Gearbox ratios:
Final drive ratio:
– number of teeth:
Overall ratios:
Propeller shaft:
Front forks:
Oil content per fork
tube:
Total front suspension
travel:
Steering lock angle:
Handlebar:
Steering lock:
Lock system:
Mirrors:
Switches and functions:
Rear wheel drive:
5
1st, 4.4; 2nd, 2.86; 3rd, 2.07;
4th, 1.67; 5th, 1.50 to 1
3.36 1
37/11
1st, 14.78; 2nd, 9.6; 3rd, 6.95;
4th, 5.61; 5th, 5.04 to 1
With universal joint and integral
torsional vibration damper
Telescopic, with double-acting hydraulic
dampers and progressive spring rates;
fixed tube diameter 36 mm (1.42 in)
0.19 + 0.01 1 (0.44 + 0.018 U.S. pint).
Refer to Rider’s Handbook for approved
oil grades
175 mm (6.89 in)
2 X 47°
Touring pattern, adjustable
on left side of steering head
Identical-key locks for ignition,
dualseat, fuel tank filler cap and
steering lock
Two, rigidly mounted on handlebar,
mirror diameter 100 mm (3.94 in)
Central ignition/light switch in
instrument cluster
Left: lever for cold-starting device {cho
— horn push, low beam (dip) switch wi
headlight flasher, turn indicator
control
Right:. ignition cutout (“kill”) switch,
starter pushbutton
Light alloy propeller shaft housing,
crown wheel and pinion with antifriction
bearings and Palloid tooth contact
pattern. Rear wheel attached to crown
wheel flange
Oil content:
Rear swinging arm and
suspension:
Oil content for propeller
shaft lubrication:
Swinging arm length:
Suspension travel (at
wheel) :
Springing element:
Spring rate adjustment:
Front brake:
Brake disc diameter:
Brake piston diameter:
Brake operation:
6
0.35 1 (0.62 U.S. pint) brand-name
hypoid gear oil, API Class GL 5
– above 5°C (41°F): SAE 90
– below 5°C (41°F): SAE 80
Torsionally rigid BMW “monolever”
with adjustable taper roller bearings
and long-travel suspension
0.151 (0.18 U.S. pint) brand-name
gear oil, API Class GL 5
– above 5°C (41°F): SAE 90
– below 5°C (41°F): SAE 80
413 mm (16.3 in)
153 mm (6.02 in)
hypoid
Monoshock with gas-filled damper,
progressive spring rate and provision
for spring-rate adjustment
3-position
Single fixed-caliper disc brake with (
perforated stainless steel disc and
semi-metallic pads to resist wet-weather
fade. No provision for conversion
to twindisc brake
260 mm (10.23 in)
38 mm (1.5 in)
hydraulic
Master cylinder diameter: 12 mm (0.47 in)
Total brake pad area:
Rear brake:
Drum diameter
Brake operation:
Total brake lining area:
Front wheel
Front rim size:
Rear Wheel:
37 cm2
Drum, integral with rear wheel drive
200 mm (7.87 in)
Mechanical, by rod linkage
89 cm2
Spoked, with hardened light alloy rim
1. 85 B 19
Spoked, with hardened light alloy rim
(
Rear rim size:
Front tire:
Rear tire:
Frame:
Fairing:
Footrests:
Pillion footrests:
Dualseat:
Dualseat length:
Storage space:
Storage space volume:
Toolkit:
Standard Accessories:
Motorcycle electrical
equipment:
Electrical system
voltage:
Battery capacity:
Signalling equipment:
Instruments/functions:
Additional Instruments:
7
2.50 B 18
100/90 H 19 (3.25 H 19)
120/90 H 18 (4.00 H 18)
Tubular, double loop with bolted-on
rear subframe
Miniature cockpit fairing can be
installed subsequently as special
equipment
Light alloy with rubber facing,
spring-loaded, folding
Folding, rubber-faced
Detachable, with lock
600 mm (23.6 in)
Tool tray under dualseat
2.1 1 (0.074 ft 3)
21 items, plus tire inflating pump
and puncture repair kit
Cylinder guard hoop with prop stand
Central wiring harness of modern design,
with multiple protection. All electrical
control elements are centrally located
and protected under the right half of
the tank. Two fuse circuits.
12 V
16 Ah
Vibrator-pattern horn
Two separate dials integrated into
common crash pad: speedometer with
trip distance recorder. Telltale and
warning lights: left/right turn
indicator repeater (green), battery
charge (red), engine oil pressure (red),
neutral selected (green), high headlight
beam (blue)
Clock and voltmeter as special equipment
option
Headlight bulb:
Headlight diameter:
Rear light:
Dimensions:
Overall length (at unladen
8
H 4, 55/60 W
160 mm (6.3 in)
Single-chamber
weight: 2180 mm (85.8 in)
Max. width (engine):
Max. height (without
mirrors):
Handlebar width
(without mirrors}:
Handlebar width with
mirrors:
Width over footrests:
Wheelbase in normal-load
790 mm (31. l in)
1150 mm (45.3 in)
715 mm (28.1 in}
850 mm (33.5 in)
590 mm (23.2 in)
position: 1442 mm (56.8 in)
Caster in normal-load
position: 129 mm (5.08 in)
Seat height at unladen
weight: 845 mm (33.3 in)
Ground clearance: 170 mm (6.69 in)
~ in normal-load position 130 mm (5.12 in)
Heel-over angle r/1 in
normal-load position:
Weights:
Dry weight acc. to
ISO 6726:
Unladen weight:
Gross weight limit:
183 kg (403.4 lb)
198 kg (436.5 lb)
398 kg (877.4 lb)
l
0
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-….._…_ … .
9
Braking performance with all brakes in use:
To a standstill from
SO km/h (31 mile/h):
80 km/h (SO mile/h}:
100 km/h (62 mile/h):
130 km/h (81 mile/h):
150 km/h (93 mile/h):
l’ooceleration:
0 – 100 km/h (62 mile/h):
0 – 140 km/h (87 mile/h}:
0 – 400 m (1312 ft):
0 – 1000 m (3281 ft):
(Rider only) (At gross weigr
limit)
11.6 m (38.1 ft) 12.3 m (40.4 ft
30.5 m (100.l ft) 28.9 m (94.8 ft
44.1 m (144.7 ft) 47.3 m (155.2 f
76.l m (249.7 ft) 79.5 m (260.8 f
95.8 m (314.3 ft) 108.9 m (357.3
(Rider only)
5.6 s
10.3 s
13.5 s
26.0 s
10
BMW R80RT
The RBORT is derived from the RlOORT model.
The engine is the well-proven 800 cm3 unit as used in the
RBOG/S, running on regular or unleaded grade fuel.
The principal differences are to be found in the altered
equipment specification.
Engine:
Standard specification
does not include:
800 cm,3 37 kW
Clock and voltmeter
Steel-cable padlock
Nivomat self-levelling suspension
Power socket
Rear disc brake*
Holder for “Touring” pannier cases
With the exception of the item marked*, the above equipment
can be obtained as special equipment options, as well as the
remaining items on the options list.
This model has its own color schemes, with lining out:
-Pacific blue metallic with silver lining out
-Red metallic with gold lining out
Engine: Aircooled two-cylinder four-stroke
horizontally opposed unit with overhead
valves in inverted V pattern; light allo}
construction, with “Galnikal” coated
aluminum cylinder barrels. Single-piece
forged crankshaft with plain bearings.
Number of Cylinders: Two
Displacement, effective: 797.5 cm
3
Torque:
– at engine speed
Bore x stroke:
Compression ratio:
Mixture preparation and
control:
59 Nm (43.5 lb. ft)
3500/min
84.8 X 70.t; mm
8. 2 : 1
Two constant-depres~ion
cold starting device
Left carburetor type:
Right carburetor type:
Barrel diameter ‘.
Main jet:
Needle jet:
Jet needle No.
Needle position:
Idle jet:
Idle air jet:
\
carburetors wi tl
V 64/32/305
V 64/32/306
32.,mm (
145, ‘.,__/
2.64
46 – 241
4
45
1 mm (0.04 in,
(
Fuel requirement:
Octane number:
Valve gear:
Valve timing:
Valve diameters:
-inlet:
-exhaust:
Valve clearances:
-up to 1000 km (app. 630
-inlet:
-exhaust:
-after 1000 km {app. 630
-inlet:
-exhaust:
·Engine oil content:
-if oil filter is
renewed:
Engine oil viscosities:
Oil pump:
Theoretical flow rate
at Nmax:
Oil filter:
Air cleaner:
Ignition system:
Coil:
Spark plugs:
11
Leaded or unleaded
RON= 91 R & M = 87
Camshaft driven by chain and sprockets;
valves operated by light alloy pushrods
and rockers
Inlet opens: 16° before TDC
Inlet closes: 44° after BDC
Exhaust opens: 56° before BDC
Exhaust closes: 4° after.TDC
(at 2 mm (0.079 in) valve clearances)
42 mm (1.654 in)
38 mm (1.496 in)
miles)
0.15 mm (0. 006 in)
0.20 mm (0.008 in)
miles)
0.10 mm (0. 004 in)
0.15 mm (0. 006 in)
2.25 1 (3.96 U.S. pint)
2.5 1 (4.4 U.S. pint)
Pleas~ refer to the motorcycle’s rider’s
handbook – see illustration of 11viscosity
thermometer 11
Trochoid pattern (Eaton system)
1400 1 (308 u.s. gal)/h at 6000/min
and 4.5 bar pressure
“Micronic 11 filter element
11Micronic 11 pancake-type element
Breakerless transistorized coil ignition
(TSZ h) with centrifugal timing control
(adjustable). Protected location in
separate ignition box. Adjustment data
as for R80G/S.
2 X 12 V
14 mm dia., long thread
Bosch
Beru
Champion
W 7 D
14-7 D
N 10 Y
Electrode gap:
Alternator:
Starter motor:
Fuel tank:
Fuel tap:
Exhaust System:
Exhaust pipe diameter:
Clutch:
Clutch plate diameter:
Lever effort required:
Gearbox:
Oil content:
Gearbox ratios:
Final drive ratio:
– number of teeth:
Overall ratios:
Propeller shaft:
Front forks:
Oil content per fork
tube:
12
0.6 + 0.1 mm (0.024 + 0.004 in)
280 W
Sliding-engagement type, 0.7 kW
24 1 (5.28 U.S. gal) capacity, sheet
steel, with internal corrosion
protection
With reserve position; quantity in
reserve 3 1 (5.3 U.S. pint)
Two polished chromium-plated silencers;
exhaust pipes linked by two interference
pipes
38 mm (1.5 in) I
Single dry plate with increased-leverage·
diaphragm spring
165 mm (6.5 in)
50 … 70 N (110 … 154 lbf)
.. (
Five-speed, flanged to engine block, wit.ll
claw-pattern shift and integral shock
dampler
0.8 1 (1.4 Imp. pint) brand-name hypoid
gear oil, API Class GL 5
-above S°C (41°F): SAE 90
-below S°C (41°F): SAE 80
1st, 4.4; 2nd, 2.86; 3rd, 2.0; 4th, 1.67;
5th, 1.50 to 1
3.36 to 1
37/11
1st, 14.78; 2nd, 9.6; 34d, 6.95; 4th, 5.6
5th, 5.04 to 1
With univeral joint and integral
torsional vibration damper
Long-travel telescopic forks with
double-acting hydraulic dampers and
progressive-rate ~prings.
Fixed tube diameter 36 mm {1.42 in}
l/
0.22 + 0.01 1 (0.46 + 0.018 U.S. pint).
Refer to rider’s handbook for approved
grades.
(
Total front suspension
travel:
Steering lock angle:
Handlebar:
Steering lock:
Lock system:
Mirrors:
Switches and functions:
Rear wheel drive:
Oil content:
Rear wheel swinging
fork and suspension:
Oil _content for
propeller shaft
lubrication:
13
200 mm (7.87 in)
2 X 35°
“Touring” pattern, adjustable
on left side of steering head
Identical-key locks for ignition,
dualseat, fuel tank filler cap,
steering lock and storage compartment
(2x)
2, integrated into fairing
Central ignition switch on instrument panel
Left: lever for cold-starting device (choke
horn push, main light switch, low beam (dip:
switch with headlight flasher, turn
indicator switch
Right: emergency ignition cutout (“kill”)
switch, starter pushbutton
Light alloy propeller shaft housing with
antifriction bearings for crown wheel
and pinion; Palloid tooth contact pattern
0.35 1 (0.62 U.S. pint) brand-name hypoid
gear oil, API Class GL 5
-above 5°C (41°F) SAE 90
-below 5°C (41°F) SAE 80
Torsionally rigid fork with adjustable
taper roller bearings
0.15 1 (0.18 U.S. pint) brand-name hypoid
gear oil, API Class GL 5
-above 5°C (41°F): SAE 90
-below 5°C (41°F): SAE 80
Length of swinging fork: 413 mm (16.3 in)
Suspension travel
(at wheel l :
Springing element:
Spring rate adjustment:
Alternative rear
suspension:
125 mm (4.92 in)
2 spring struts with integral hydraulic
dampers; progressive spring rate and
provision for spring rate adjustment
3-position
HD spring-damper struts or nivomat selflevelling
units
i
• i
I
Front brake:
Disc diameter:
Brake piston diameter:
Brake operation:
Master cylinder diameter:
Total brake pad area:
14
Twin disc with fixed calipers, perforated(~”,
stainless steel discs and semi-metallic
pads for resistance to wet-weather fade
260 mm (10.23 in)
38 mm (1.5 in)
hydraulic
15 mm (0. 59 in)
74
cm 2
Rear brake: Drum, integral with rear wheel drive
Brake operation: Mechanical, by linkage
Total brake lining area: 89 cm2
Front wheel: Cast light alloy with safety rim profile
Front rim size: 2.15 B – 19
Rear wheel: Cast light alloy with safety rim profile
Rear rim size:
Front tire:
Rear tire:
Frame:
2.50 B – 18
3.25 S 19
4.00 S 18
Tubular, double loop with bolted-on rear
subframe
(
Fairing: Rigidly attached to frame, with
interchangeable sections. Full protection
Footrests:
Pillion rests:
Dualseat:
Dualseat length:
Storage space:
Storage space volume:
against weather effects. Adjustable ‘·
windscreen and integral, lockable storage
compartments
Adjustable, rubber-faced
Folding, rubber-faced
Hinge-up dualseat, lockable
650 mm (25.6 in)
Tool tray, rear compartment, compartments ir.
fairing ~
3.0 1 / 2.8 l / 2 x 4.5 1
(0.11 / 0.10 / 2 x 0.16 ft 3 )
Toolkit:
Standard accessories:
Electrical system:
Voltage:
Battery capacity:
Audible warning:
Instruments/functions:
Additional instruments:
Headlight bulb:
Headlight diameter:
Rear light:
Dimensions:
Overall length (at unladen
weight:
Max. width (faring):
Max. height (without
mirrors:
Handlebar width (without
mirrors:
Width over footrests:
Wheelbase in normal-load
position:
Caster in normal-load
position:
15
19 items, plus pump and puncture repair kit
Hydraulic steering damper, adjustable
First Aid kit
Central wiring harness of modern design,
with multiple protection. All electrical
control elements located in protected
positions under tank and in headlight
housing. Two fused circuits.
12 V
28 Ah
two horns
Separate dials in common housing:
speedometer with trip distance recorder;
revolution counter; telltale and warning
lamps for turn indicators (green), engine
oil pressure (red), battery charge (red),
neutral selected (green) and high headlight
beam (blue)
Clock and voltmeter as special equipment
option
H’4, 55/60 W
180 mm (6.35 in)
Multiple-chamber pattern
2210 mm (78 .0 in)
930 mm (32.8 in)
1465 mm (51.7 in)
720 mm (25.4 in)
550 mm (19. 4 in)
1465 mm (51. 7 in)
95 mm (3.35 in)
16
Seat height at unladen~
weight: 820 mm (28.9 in)
Ground clearance: 160 mm (5.65 in) – in normal-load
position: 130 mm (5.12 in)
Heel-over angle, right/left,
in normal-load
position:
Weights:
Dry weight acc. to
ISO 6726:
Unladen weight:
Gross weight limit:
Performance:
45° I 48°
214 kg (471.8 lb)
235 kg (518.l lb)
440 kg (970.0 lb)
Top speed, rider seated: 161 km/h (100 mile/h)
Braking performance with
all brakes in use:
To a standstill from:
50 km/h (31 rnile/h):
80 km/h (50 mile/h):
100 km/h (62 mile/h}:
130 km/h (81 mile/h):
150 km/h (93 rnile/h):
Acceleration:
0 – 50 km/h ( 31 rnile/h) :
0 – 100 km/h (62 mile/h):
0 – 130 km/h (81 mile/h):
0 – 160 km/h (99 mile/h)
0 – 400 m (1312 ft):
0 – 1000 m (3280 ft):
Rider only
11.6 m (38 .1 ft)
30.3 m (99.4 ft)
44.1 m (144.7 ft)
81.0 m (265.7 ft)
103.7 m (340.2 ft)
2.2 s
7.1 s
12.8 s
33.0 s
,•r•
15.3 s
29.7 s
At gross
weight limit
13~0 m ( 4 2. 7 ft
29.3 m (96.1 fJ
43.5 m (142.7 !
79.8 m .(261.8 f
108.0 m (354.3
l_,,