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|bore_stroke = 94.0mm x 94.0mm | |bore_stroke = 94.0mm x 94.0mm | ||
|compression = 8.2:1 | |compression = 8.2:1 | ||
|top_speed = | |top_speed = 222 km/h / 137.9 mph | ||
|power = 70.0 HP (52.2 KW) @ 7500RPM | |power = 70.0 HP (52.2 KW) @ 7500RPM | ||
|torque = 56.06 ft/lbs (76.0 Nm) @ 5500RPM | |torque = 56.06 ft/lbs (76.0 Nm) @ 5500RPM | ||
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|competition = | |competition = | ||
}} | }} | ||
The '''[[BMW]] Krauser MKM 1000''' was an air-cooled, four-stroke, boxer twin cylinder, 4 valves per cylinder Sport Bike [[motorcycle]] produced by [[BMW]] in 1981. Max [[torque]] was 56.06 ft/lbs (76.0 Nm) @ 5500 RPM. Claimed [[horsepower]] was 70.0 HP (52.2 KW) @ 7500 RPM. It could reach a top speed of 222 km/h / 137.9 mph. | |||
The '''[[BMW]] Krauser MKM 1000''' was | |||
==Engine== | ==Engine== | ||
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==1981 BMW Krauser MKM 1000== | ==1981 BMW Krauser MKM 1000== | ||
<gallery mode='packed-hover'> | |||
File:bmw-krauser-mkm-1000-1981-1981-4.jpg|600px|1981 BMW Krauser MKM 1000 | |||
File:bmw-krauser-mkm-1000-1981-1981-3.jpg|600px|1981 BMW Krauser MKM 1000 | |||
File:bmw-krauser-mkm-1000-1981-1981-2.jpg|600px|1981 BMW Krauser MKM 1000 | |||
File:bmw-krauser-mkm-1000-1981-1981-1.jpg|600px|1981 BMW Krauser MKM 1000 | |||
File:bmw-krauser-mkm-1000-1981-1981-0.jpg|600px|1981 BMW Krauser MKM 1000 | |||
</gallery> | |||
The 1981 MY BMW MKM 100 has, at its heart, an air-cooled, four-stroke, 980cc, boxer twin cylinder powerplant paired to a five-speed manual transmission that can produce a claimed 70 horsepower and 75 Nm of torque. It comes with features such as a 36mm telescopic fork, Boge dual shocks as a rear suspension, laced wheels, dual front disc brakes, a small windscreen, a full fairing, a large headlamp, a dual seat and an analogue instrument cluster. | The 1981 MY BMW MKM 100 has, at its heart, an air-cooled, four-stroke, 980cc, boxer twin cylinder powerplant paired to a five-speed manual transmission that can produce a claimed 70 horsepower and 75 Nm of torque. It comes with features such as a 36mm telescopic fork, Boge dual shocks as a rear suspension, laced wheels, dual front disc brakes, a small windscreen, a full fairing, a large headlamp, a dual seat and an analogue instrument cluster. | ||
==Review== | |||
There will always be a small number of motorcycle | |||
enthusiasts who insist on something different; it is their aim to improve | |||
upon excellence. If the prime mover is a German, he will usually pick on his | |||
native BMW as a candidate for the treatment. So it was with Mike Krauser, | |||
his name already famous for high quality, quickly detachable luggage | |||
systems. He looked at the top BMW of the time, the sporting R100RS, and | |||
found it wanting. | |||
First thing to go was the frame. Comfortable | |||
suspension and plenty of room for two had no place on the super-sporting | |||
machine he envisaged; nor did the simple (and inevitably flexible) tubular | |||
frame. Krauser commissioned German aircraft engineers to design an | |||
alternative, and they came up with a masterpiece of complexity, a veritable | |||
bird-cage of short, straight tubes that double- and triple-triangulated one | |||
another for maximum rigidity, The BMW suspension was modified to | |||
eliminate the mid-corner wallows, then the whole was clothed in compact | |||
bodywork that echoed the BMW's austere styling without the bulk; the petrol | |||
tank, seat and rear mudguard were unified in one piece of glass fibre. | |||
Krauser then turned to the flat-twin engine. The overall design was | |||
excellent, well-balanced and well-cooled, but he wanted more flexibility as | |||
well as more urge at high revs. He commissioned a more modern four-valve | |||
head to replace the BMW's two valves, which not only improved the breathing | |||
throughout the rev range, but also lifted the rev ceiling. | |||
The MKM1000 | |||
was a long time in the making, and all the careful development work has | |||
produced a fine bike. To ride, it is essentially a BMW - the familiar Boxer | |||
engine and the sensations of the shaft drive see to that. But it is a BMW | |||
apart. First, there is the riding position, crouched over the bars in | |||
a sporting style. It throws the weight forward rather uncomfortably at lower | |||
speeds, but the more the wind lifts the rider, the better control becomes. | |||
The handling is concomitantly sporting, with a far more direct response to | |||
the subtleties of control than any standard BMW. Engine modifications | |||
perform the same function of tautening up the German luxury bike to release | |||
its sporting potential. Curiously, the first sensation of the four-valve | |||
engine is of milder manners, since the Krauser pulls smoothly and strongly | |||
from below 3,000rpm. It is the crispness higher up Ihe rev range that makes | |||
it a 130mph-plus machine. The MKM1000 is exotic, very expensive, and | |||
very rare - a special version of a rather special breed. | |||
Source The | |||
worlds fastest motorcycles by John Cutts & Michael Scott | |||
Cycle Guide Review | |||
In Germany, motorcycles are meant to be ridden at | |||
top speed. You have no choice. The country is laced with high-speed | |||
thoroughfares called autobahns that are far twistier than American turnpikes. | |||
The speed limit is not 55 mph. The left-hand lane is restricted to highspeed | |||
cruising. Unless you keep a reasonable pace, you're apt to be squashed like a | |||
cockroach by Porsche 928s, BMW 645s or Mercedes-Benz 450SLCs hurtling along at | |||
200 kph. | |||
It is the leather-suited weekend motorcyclist who | |||
craves this sort of riding who will most appreciate the Krauser MKM1000. Once | |||
you tuck behind the Whirlpool-white fairing at 90 mph, the only evidence of the | |||
hole the bike punches in the wind is a slight rustle around your ears. With your | |||
arms stretched to meet the narrow handlebar, your feet resting on | |||
hand-fabricated rearsets and your backside braced against the tailpiece, the MKM | |||
carves single-mindedly through high-speed sweepers like a racer, the BMW S-type | |||
engine throbbling like an oversize metronome. The Krauser MKM1000 is one of the | |||
best bikes for flat-out running ever built. | |||
Motorcycle luggage and accessory manufacturer | |||
Mike Krauser had such Sunday adventures in mind when he commissioned the MKM1000 | |||
(Mike Krauser Motorcycle) for production. Krauser has sponsored racing sidecars | |||
in the past, provided some backing for Freddie Spencer's European adventures | |||
this year and bankrolled Toni Mang's successful pursuit of the 1980 250cc | |||
roadracing world championship, but he has long sought to stamp street riding | |||
with his own personal imprint. With this BMW-powered special, Krauser hopes to | |||
embody his vision of what a true high-performance road bike should be. | |||
The MKM has its genesis in a development firm | |||
called HPN, composed of former endurance racer Alfred Halbfeld, a silent partner | |||
named Pepper1 and Michael Neher. In April 1979, the firm began development of a | |||
BMW-powered special because, as Neher comments, only BMW owners can afford such | |||
bikes. Furthermore, HPN elected to certify the bike as a production motorcycle | |||
with the TUV, the hard-nose German counterpart of the DOT and EPA. After $22,000 | |||
of certification and a further $115,000 of development, HPN convinced Krauser to | |||
fund a 200-unit production run. | |||
Virtually all of the MKM's running gear comes | |||
from BMW parts binsa move to satisfy the TUVwhich insures that the MKM is a | |||
high-performance street bike instead of a streetable racer like the Bimota, | |||
Motoplast or Behn specials. The S-type BMW engine with its hot cam, 8.2:1 | |||
compression ratio and 40mm Bing CV carbs is fitted, and the wheels, exhaust | |||
pipes, brakes and shaft drive also come from the 1980 R100S (now called the | |||
R100CS). The S-model's suspension pieces have been modified to provide less | |||
travel for greater high-speed stability, however. Stiffer preload springs do the | |||
job in front while stiff springs and heavier 10-weight shock oil do the job in | |||
the rear. This production-based hardware attests to the MKM's expected | |||
durability and also explains why the bike qualifies as a street-legal bike in | |||
the U.S. | |||
The linchpin of the Krauser-bike, though, is its | |||
frame. As with many of the specialty bikes these days, the frame has its roots | |||
in pre-Honda RCB endurance racing, when engine technology was closely controlled | |||
and speed had to come from chassis engineering. The MKM uses a space frame, a | |||
design offering plenty of that elusive but valuable quantity, torsional | |||
rigidity, for good high-speed handling while minimizing weight. HPN also used | |||
computer modeling to develop a space frame that uses many short lengths of | |||
small-diameter tubing. This Gitterrohrfarhwerk or birdcage-like design permits | |||
an extremely lightweight structure-25.3 poundsthat still offers substantial | |||
torsional rigidity. | |||
Surrounding the MKM's frame is a fiberglass body | |||
drawn by Franz Wiedemann, who learned his trade designing BMW's R100RS and | |||
R100RT fairings in the Pininfarina windtunnel. The fairing and the one-piece | |||
tank/seat/tailpiece attach to the frame with Dzus-type fasteners. The 5.6-gallon | |||
aluminum fuel tank (with a miniscule reserve capacity) lies beneath the | |||
fiberglass, nestled among the frame tubes. The simple slab of foam that forms | |||
the seat can be removed to reveal a storage area in the tailpiece. A different | |||
body with a passenger seat also can be ordered for the MKM if you prefer. | |||
Once you fit yourself into the monoposto riding | |||
position and get underway, the feedback the MKM gives you is pure BMW. Yet the | |||
Krauser bike manages to refine these sensations, reducing the amplitude of | |||
engine vibrations and controlling the rise and fall of the rear end. As a | |||
result, the MKM operates with greater precision than any BMW, including the way | |||
the rearset shift lever snaps through clunk-free gearchanges. | |||
As the open road beckons, the MKM chassis goes to | |||
work like no other BMW as well. Not a trace of high-speed BMW-weave can be | |||
detected. A wheelbase one-inch longer than the R100S's provides part of the | |||
reason. Also, the engine has been raised 25mm in the frame for greater ground | |||
clearance, which gives the MKM a higher center of gravity for even more | |||
straightline stability. | |||
For all its autobahn-calibrated manners, the | |||
Krauser bike adapts to scratching in the corners fairly well. The steering in | |||
particular is incredibly precise. The narrow handlebar and high cg prevent you | |||
from pitching the bike into corners with abandon, but the MKM's steadiness under | |||
all circumstances proves to be a great go-fast asset. The engine complements | |||
your roadracing fantasies because the great, fund of torque on hand allows you | |||
to concentrate on riding instead of shifting. Meanwhile, the oversize Metzeler | |||
tires also are up to the roadholding capabilities of the chassis (the swingarm | |||
has been widened to permit the installation of the 130/80V18 rear tire). | |||
Still, there's rarely any question about how | |||
bikes like the MKM1000 react to speed. It's everyday use that separates the | |||
winners from the losers. Because of the use of BMW components, the Krauser bike | |||
actually is easier to live with than most one-off machines. Even so, the MKM | |||
stumbles when it comes to comfort. Unless you're cruising at more than 80 mph, | |||
there's not enough wind pressure to help you sustain the riding position, so the | |||
narrow R100RS handlebar soon introduces you to wrist wreck. Also, the suspension | |||
is simply oversprung. It will pound your joints to powder on any trip over city | |||
streets or Interstate. The Europeans unfortunately equate a rocky ride with high | |||
performance, thinking that the thumps signal a tautly strung bike that fosters a | |||
closer relationship of man and machine. And this classic confusion of stiffness | |||
with streetwise road holding will wear you down after an hour of riding. | |||
Despite its comfort limitations, the MKM1000 is | |||
indeed the ultimate BMW it set out to be. It's the sort of motorcycle you'd | |||
trailer behind your Audi 5000 Turbo to some Alpine locale for an afternoon run. | |||
It's difficult to know if the MKM design | |||
will prove as significant in the long run as Mike Krauser hopes, however. The | |||
space frame does indeed combine stiffness with low weight. Also, the MKM frame | |||
actually affords access to the engine, allowing you to pull the top end without | |||
removing the engine from the framealthough this feature is largely a function | |||
of the engine design rather than the frame. Still, this point could be moot, for | |||
engine durability these days is such that removing the engine from the frame is | |||
an accepted part of major maintenanceas with the Honda CB750. But the | |||
spaceframe's advantages are all but cancelled by one thingprice. The MKM1000 | |||
will cost, $15,000 at various BMW dealers in this country, largely because of | |||
the labor cost of building its frame. And for this reason, the Krauserbike will | |||
remain one of the world's best limited production BMWsbut probably not the next | |||
full-scale production BMW.Michael Jordan■ | |||
==Specifications== | |||
{| class="wikitable" | |||
|- | |||
!Make Model | |||
|BMW Krauser MKM 1000 | |||
|- | |||
!Year | |||
|1980 | |||
|- | |||
!Engine Type | |||
|Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 4 valves per cylinder. | |||
|- | |||
!Displacement | |||
|980 cc / 59.8 cu in. | |||
|- | |||
!Bore X Stroke | |||
|94 x 70.6 mm | |||
|- | |||
!Cooling System | |||
|Air cooled | |||
|- | |||
!Compression | |||
|8.2:1 | |||
|- | |||
!Induction | |||
|2 x ∅40mm Bing carburetors. | |||
|- | |||
!Ignition | |||
|Single points, single coil | |||
|- | |||
!Starting | |||
|Electric | |||
|- | |||
!Max Power | |||
|52.2 kW / 70 hp @ 7500 rpm | |||
|- | |||
!Max Torque | |||
|75.4 Nm / 7.7 kgf-m / 55.7 ft/lb @ 5500 rpm | |||
|- | |||
!Transmission | |||
|5 Speed | |||
|- | |||
!Final Drive | |||
|Chain | |||
|- | |||
!Front Suspension | |||
|∅36mm BMW modified forks | |||
|- | |||
!Front Wheel Travel | |||
|160 mm / 6.3" | |||
|- | |||
!Rear Suspension | |||
|Boge dual shocks | |||
|- | |||
!Rear Wheel Travel | |||
|124.5 mm / 4.9" | |||
|- | |||
!Front Brakes | |||
|2 x ∅259mm discs | |||
|- | |||
!Rear Brakes | |||
|Single disc | |||
|- | |||
!Front Tire | |||
|3.50-V19 | |||
|- | |||
!Rear Tire | |||
|130/80 V18 | |||
|- | |||
!Dry Weight | |||
|212 kg / 467.3 lbs | |||
|- | |||
!Fuel Capacity | |||
|17.5 Liters / 4.6 US gal | |||
|- | |||
!Consumption Average | |||
|4.7 L/100 km/ 21.3 km/l / 50 US mpg | |||
|- | |||
!Standing ¼ Mile | |||
|12.3 sec | |||
|- | |||
!Top Speed | |||
|222 km/h / 137.9 mph | |||
|- | |||
!Road Test | |||
|BIKE Magazine Krauser MKM 1000 Brochure Superbike Motorcycle Sport Cycle Guide | |||
|} | |||
== Videos == | |||
{{#ev:youtube|https://www.youtube.com/watch?v=ve6u9a99Uc8|600|center}} | |||
[[Category:Sport Bike motorcycles]] | [[Category:Sport Bike motorcycles]] | ||
[[Category:BMW motorcycles]] | [[Category:BMW motorcycles]] | ||
[[Category:1980s motorcycles]] | [[Category:1980s motorcycles]] |