BMW F800S
Encyclopedia
The F800S was a sport bike
made by BMW Motorrad
from 2006 to 2010. Along with the F800S, other bikes in the F-bike range are the dual-sport F800GS
, the sport touring
F800ST
, and the naked F800R
.
BMW developed with Rotax
a 798 cc parallel-twin engine with a 360 degree firing order. This produced an exhaust note reminiscent of BMW's signature air-cooled boxer twins
. However, this firing order required both pistons to move up and down at the same time. To counter the significant inertia produced by the pistons reciprocating, BMW devised a third vestigial connecting rod
to a balance weight. The result was a parallel twin with significantly reduced vibration compared with other parallel twin engine designs. The engine was oiled by a dry sump
system, and a soft ignition-cut rev limiter engaged at 9,000 rpm.
The engine was notable for early and powerful onset of torque. Chris Pfeiffer used a modified F800S before moving to his signature F800R
, using the low-end power of the engine for stunting. BMW tuned the F800 series engine to run lean, typically with air-fuel ratios in the range of 15:1 to 16:1.
The F800S and ST both used low-maintenance belt drives and single sided swingarms. Bikes equipped with ABS also included a rear-wheel lift detection system.
In some markets, including the United States, the F800S was discontinued after the 2007 model year. The F800S was discontinued across most of the world after the summer of 2010 with only a few Central American and Eastern European countries still stocking the last supplies of the model.
Sport bike
A sport bike, also written as sportbike, is a motorcycle optimized for speed, acceleration, braking, and cornering on paved roads, typically at the expense of comfort and fuel economy in comparison to less specialized motorcycles...
made by BMW Motorrad
BMW Motorrad
BMW Motorrad is the motorcycle brand of the German company BMW, part of its Corporate and Brand Development division. The current General Director of the unit is Hendrik von Kuenheim....
from 2006 to 2010. Along with the F800S, other bikes in the F-bike range are the dual-sport F800GS
BMW GS parallel-twin
The BMW F800GS and F650GS are members of the GS family of dual-sport motorcycles manufactured in Berlin, Germany by BMW Motorrad. Both bikes were launched in 2008, and use the same 798 cc parallel-twin engine with chain drive, but with different power outputs and equipment levels...
, the sport touring
Sport touring
A Sport touring motorcycle is a type of motorcycle that blends the performance of a sport bike with the long-distance capabilities of a touring motorcycle, while providing comfort and relative safety to the rider....
F800ST
BMW F800ST
The BMW F800ST is a sport touring motorcycle, made by BMW Motorrad from 2006. Along with the closely related BMW F800S, other bikes in the F-bike range are the dual-sport F800GS, and the naked F800R...
, and the naked F800R
BMW F800R
The BMW F800R is a naked motorcycle introduced by BMW Motorrad in 2009. It is the newest addition to the F-series, which includes the F800S, the dual-sport F800GS & F650GS, and the sport touring F800ST....
.
BMW developed with Rotax
Rotax
BRP-Powertrain GmbH & Co KG , commonly known simply as Rotax, is an Austrian engine manufacturer. It develops and produces four-stroke and advanced two-stroke engines for Bombardier Recreational Products products as well as for motorcycles, karts,...
a 798 cc parallel-twin engine with a 360 degree firing order. This produced an exhaust note reminiscent of BMW's signature air-cooled boxer twins
Flat engine
A flat engine is an internal combustion engine with multiple pistons that move in a horizontal plane. Typically, the layout has cylinders arranged in two banks on either side of a single crankshaft and is sometimes known as the boxer, or horizontally opposed engine. The concept was patented in 1896...
. However, this firing order required both pistons to move up and down at the same time. To counter the significant inertia produced by the pistons reciprocating, BMW devised a third vestigial connecting rod
Connecting rod
In a reciprocating piston engine, the connecting rod or conrod connects the piston to the crank or crankshaft. Together with the crank, they form a simple mechanism that converts linear motion into rotating motion....
to a balance weight. The result was a parallel twin with significantly reduced vibration compared with other parallel twin engine designs. The engine was oiled by a dry sump
Dry sump
A dry sump is a lubricating motor oil management method for four-stroke and large two-stroke piston internal combustion engines that uses external pumps and a secondary external reservoir for oil, as compared to a conventional wet sump system....
system, and a soft ignition-cut rev limiter engaged at 9,000 rpm.
The engine was notable for early and powerful onset of torque. Chris Pfeiffer used a modified F800S before moving to his signature F800R
BMW F800R
The BMW F800R is a naked motorcycle introduced by BMW Motorrad in 2009. It is the newest addition to the F-series, which includes the F800S, the dual-sport F800GS & F650GS, and the sport touring F800ST....
, using the low-end power of the engine for stunting. BMW tuned the F800 series engine to run lean, typically with air-fuel ratios in the range of 15:1 to 16:1.
The F800S and ST both used low-maintenance belt drives and single sided swingarms. Bikes equipped with ABS also included a rear-wheel lift detection system.
In some markets, including the United States, the F800S was discontinued after the 2007 model year. The F800S was discontinued across most of the world after the summer of 2010 with only a few Central American and Eastern European countries still stocking the last supplies of the model.