BMW R1200S
 | |
| Manufacturer | BMW Motorrad |
|---|---|
| Production | 2006–2007[1] |
| Predecessor | R1100S |
| Successor | BMW HP2 Sport[2] |
| Engine | 1170 cc flat twin |
| Bore / stroke | 101 mm × 73 mm (4.0 in × 2.9 in) |
| Compression ratio | 12.5:1 |
| Power | 82.45 kW (110.57 hp) @ 7,525 rpm[3] |
| Torque | 107.06 N·m (78.96 lb·ft) @ 6,710 rpm[3] |
| Ignition type | Digital CDI |
| Transmission | Single-plate dry clutch, 6-speed, chain drive[4] |
| Frame type | Tubular steel Trellis |
| Suspension |
Öhlins, Front: BMW Telelever Rear: BMW Paralever |
| Dimensions |
L: 2,151 mm (84.7 in) H: 1,177 mm (46.3 in) |
| Weight |
399 lb (181 kg) (claimed)[4] (dry) 488 lb (221 kg)[3] (wet) |
| Fuel capacity | 16 l; 3.5 imp gal (4.2 US gal) |
The BMW R1200S is a sports motorcycle produced by BMW Motorrad from 2006 to 2007.
Compared to the BMW R1100S which it succeeded, the R1200S was 13 kg (29 lb) lighter, and (with a compression ratio raised from 11.3:1 to 12.5:1)[5][6][7] it was 25% more powerful with 122 horsepower (91 kW).[8] Much of the weight saving was due to a new trellis-type frame which replaced the massive alloy frame of the R1100S.
Despite these refinements, overall the R1100S was perhaps the more successful design. Motor Cycle News said of the R1200S: "As an oddball track motorcycle it works, but as an accomplished all-rounder it falls short of the standards set by the R1100S that preceded it."[8]
HP2 Sport
In 2008 the R1200S was superseded by the double overhead camshaft HP2 Sport.[9] At 178 kg (dry) and 128 hp, the HP2 is even lighter and more powerful than the R1200S upon which it is based; (and compared to the R1100S, the HP2 is 30 kg lighter and 30 hp more powerful).[10] The HP2's dohc engine was the most powerful "oilhead" design[11] before BMW adopted liquid cooling for some of its flat twins in 2014.
Oilhead engine
In late 2012, BMW introduced a new liquid cooled version of its flat-twin engine,[12] but as of 2014 the company still fit its 110 hp oilhead to production bikes such as the BMW R nineT roadster and the R1200R.[13] BMW are introducing a budget version of the R-nineT, to be called a "Scrambler". In 2015, the company declared that provided the 1200 cc oilhead is not tuned beyond an output of 108 bhp, the motor can still pass emissions regulations.[14]
References
- ↑ http://www.motorcyclenews.com/bike-reviews/bmw/r1200s/2006/
- ↑ http://www.motorcyclenews.com/bike-reviews/bmw/hp2-sport/2008/
- 1 2 3 Conner, Blake. "BMW R1200S." Cycle World December 2006: 58+. General OneFile. 10 May 2015.
- 1 2 Cathcart, Alan. "Uber-boxer: riding BMW's first works racer in 50 years." Motorcyclist March 2008: 80+. General OneFile. 10 May 2015.
- ↑ Gantriis, Peter (2013), The Art of BMW: 90 Years of Motorcycle Excellence, Motorbooks, p. 188
- ↑ Phil Hawksley. "BMW R1200S". bmbikes.co.uk. Retrieved 1 January 2015.
- ↑ "2007 BMW R1200S Road Test". Rider Magazine. Retrieved 1 January 2015.
- 1 2 "BMW R1200S (2006-2007) Review", Motor Cycle News, 23 November 2006, retrieved 1 December 2014
- ↑ http://www.topspeed.com/motorcycles/motorcycle-reviews/bmw/2012-bmw-hp2-sport-ar126981.html
- ↑ "BMW HP2 Sport (2008-2012) Review", Motor Cycle News, 20 December 2007
- ↑ "BMW HP2 Sport (2008-2012) Review", Motor Cycle News, 20 December 2007
- ↑ http://www.cycleworld.com/2012/12/21/bmws-all-new-water-cooled-boxer-tech-preview/
- ↑ Roland Brown (7 Feb 2014), "BMW R nineT review", The Daily Telegraph
- ↑ Motor Cycle News - 8 April 2015
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