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BMW R100 Monolever Specifications

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Details of this model are a little sketchy - BMW themselves do not list it and the chassis numbers used do not appear on the Parts CD. I understand that around 180 were sold in the US during 1990/91 but am not aware of this model being marketed anywhere else in the world - if you have information, please let me know. A copy of the BMW US Sales Brochure is shown at the bottom of the page. Thanks to Rob James and Richard Munoz for the information. Apparently this machines is referred to as an R100 Classic and the handbook supplied was for the R100RT. I have been informed by Marc Jan Compagner that this model was also sold in Japan. I now have what appear to be confirmation that this model was also sold in Japan as one has been spotted in an on-line auction there by Jeff Birtwistle.

The information that I have is that Chassis Numbers ran from 6419001-6419181.

Start of Production

1990?

BMW R100 Monoshock Photo

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End of Production

1991?

Numbers Produced

??

Price

??

Engine

 

Motor Type

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

Bore x Stroke

94 x 70.6 mm (3.70 x 2.78 in)

Displacement

980 cc

Max Power

60 hp (44 KW) at 6,500 rpm

Max Torque

74 Nm (58 ft lbs) at 3,500 rpm

Compression Ratio

8.45 : 1

Valves Per Cylinder

2

Valve Control

OHV, using push rod and rocker arm

Valves

42mm intake / 40mm exhaust

Valve Timing

(Measured at 2mm valve clearance). intake opens 16 before TDC, closes 44 before BDC; exhaust opens 56 before BDC, closes 4 after TDC

Carburation System

2 32mm Bing CV Carbs

Engine Lubricating System

Wet sump

Power Transmission

 

Clutch

Dry single plate, with lever action 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

Rear Wheel Ratio

1 : 3.00

Bevel/Crownwheel

11 / 33 teeth

   

Electrical System

 

Ignition System

Contact free electronic ignition (Bosch)

Alternator

Bosch 240 W, 14V

Starter

Bosch 0.7 Kw

Battery

12V, 25 ah battery

Chassis

 

Type of Frame

Double loop tubular frame with bolt on rear section

Front wheel suspension

Telescopic fork with hydraulic shock absorber, 38.5mm stanchion tube diameter

Rear wheel suspension

BMW Monolever swinging arm with single gas filled shock, 4.8 in travel

Spring Travel Front/Rear

175 / 121 mm (6.88 x 4.76 in)

Wheel Rims, Front

MTH2 2.50 x 18 E cast alloy

Wheel Rims, Rear

MTH2 2.50 x 18 E cast alloy

Tyres, Front

90/90H x 18 tubeless

Tyres, Rear

120/90H x 18 tubelss

Brakes, Front

Dual disc brake 285 mm / 11.22 in diameter. Brembo 2 piston caliper

Brakes, Rear

Simplex drum brake 200 mm / 7.87 in diameter

Dimensions/Weights

 

Length x Width x Height

2175 x 800 x 1447 mm (85.6 x 31.5 x 57 in)

Wheel Base

1447 mm / 56.96 in

Fuel Tank Capacity

22 litres / 4.83 gal / 5.81 gal US

Unladen Weight

419 lbs dry; 485 lbs wet

Max. Permissible Weight

970 lbs

Seat Height (Unladen)

807 mm (31.8 inches)

BMW R100 Monolever Sale Brochure

 

 

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