Iki mbah buyute BMW GS 1200…(kata kawan lho)

Iki mbah buyut BMW GS 1200

mbahe BMW GG 1200 (1)

Disela-sela gelaran acara Motor Antik Club Indonesia (MACI) di Gresik beberapa waktu lalu (postingan disini) terselip sebuah motor BMW yang menurut pengamatan kawan KHS ini merupakan mbahe GS series. KHS pun berusahan mendekat meskipun matahari begitu terik untuk menjepretnya. Kenapa disebut mbah buyutnya GS ? menurut penuturan teman KHS tadi karena basis mesin yang digunakan sudah berbentuk tegak siku dan sedikit ramping seperti BMW GS saat ini. KHS yang tidak begitu paham sejarah motor-motor ya hanya menyimak saja penuturan kawan tadi :mrgreen:Berbekal mbah google maka KHS pun mencari tahu kebenaran mengenai pernyataan teman KHS tadi. Akhirnya KHS pun menuju salah satu situs di http://www.bmbikes.co.uk/ yang menurut pengamatan KHS menunjukkan bahwa motor ini merupakan BMW R80/7 series.  KHS pun kebingungan karena R80 series banyak sekali modelnya yang ditawarkan dari motor berkubikasi 800 cc ini . 😀mbahe BMW GG 1200 (3)

Berikut spesifikasi BMW R80/7 ini :

Engine

 

Motor Type

Four-stroke two cylinder horizontally opposed “Boxer” engine, air cooled

Bore x Stroke

84.8 x 70.6 mm (3.33 x 2.77 in)

Displacement

797.5 cc

Max Power

55 hp (40 KW) at 7,000 rpm or 50 hp (37 Kw) at 7,250 rpm

Max Torque

64 Nm / 47 ft lb at 5,500 rpm or 58 Nm / 42 ft lb at 5,500 rpm

Compression Ratio

9.2 : 1 or 8.2 : 1

Valves Per Cylinder

2

Valve Control

OHV, using push rod and rocker arm

Carburation System

2 constant depression carburettors, Bing 64/32/201 –  64/32/202

Engine Lubricating System

Wet sump

Power Transmission

 

Clutch

Dry single plate, with diaphragm spring

Number of Gears

5

Gear Selection

Dog type gearbox (ratchet foot lever)

Gearbox Ratios

4.4 / 2.86 / 2.07 / 1.67 / 1.50 (optional sport version: 3.38 / 2.43 / 1.93 / 1.67 / 1.50

Rear Wheel Ratio

1: 3.20 or 1 : 3.36

Bevel/Crownwheel

10 / 32  or 11 / 37 teeth

Electrical System

 

Ignition System

Battery ignition. From 1981 model: Contact free electronic ignition

Alternator

Bosch 12 V/280 W

Starter

Bosch 0.7 Kw

Spark Plugs

Bosch W 175 T 30 / Beru 175/14/3 A / Champion N10Y

Chassis

 

Type of Frame

Double loop tubular frame with bolt on rear section

Front wheel suspension

Telescopic fork with hydraulic shock absorber

Rear wheel suspension

Long swinging arm with adjustable strut

Spring Travel Front/Rear

200 / 125 mm (7.87 x 4.92 in)

Wheel Rims, Front

1.85 B 19

Wheel Rims, Rear

2.50 B 18

Tyres, Front

3.25 H 19

Tyres, Rear

4.00 H 18

Brakes, Front

Dual disc brake 260 mm / 10.23 in diameter. ATE 1 piston caliper

Brakes, Rear

Simplex drum brake 200 mm / 7.87 in diameter

Dimensions/Weights

 

Length x Width x Height

2180  (from 1978: 2210) x 746 x 1080 mm (85.82 (87.00) x 29.37 x 42.51 in)

Wheel Base

1465 mm / 57.67 in

Fuel Tank Capacity

24 litres / 5.27 gal / 6.34 gal US

Unladen Weight with Full Tank

215 Kg / 473 lb

Max. Permissible Weight

398 Kg / 876 lb

Ground Clearance

165 mm / 6.49 in

Seat Height (Unladen)

810 mm (31.9 inches)

Fuel Consumption

4.75 litres or 5.0 litres100Km (at constant 90 Kph) / 59 mpg / 47 mpg US or 56 mpg / 47 mpg US

Top Speed

180 Kph / 111 mph or 170 Kph / 105 mph

Acceleration 0 – 100 Kph / 62 mph

5.9 seconds or 6.4 seconds

BMW R80 Mono (3)

Kalau yang KHS jepret diatas sepertinya sudah terdapa rubahan disisi kepalanya ..cmiiiw. Namun entahlah ini juga hanya nebak-nebak belaka, mungkin mantemans ada yang lebih tahu bisa dishare dimari 😀 .

Maturnuwun.

sumber bacaan :

http://motorbike-search-engine.co.uk/classic_bikes/bmw-r80-gallery.php

http://www.bmbikes.co.uk/specpages/R80-7.htm

 

baca juga :

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