For years BMW has offered buyers a varied
line-up of sportbikes, tourers, and dual-purpose machines with
engine configurations ranging from twins to triples to fours.
Despite this wide range of styles and powerplants, not since
1967 has BMW built a single-cylinder machine designed for the
beginning rider.
That has changed with the 1997 F650. After three successful
years in Europe, BMW has finally brought their popular single
to North America. With its unintimidating 652cc
single-cylinder engine, lightweight chassis, great ergonomics
and tremendous flexibility, it just may have been worth the
wait.
Inspiration for BMW's F650, dubbed the Funduro in Europe,
came when company representatives visited Aprilia's factory in
Italy. At that time, Aprilia was in the final stages of
production on their Pegaso 650, a high-performance bike
powered by Rotax's liquid-cooled five-valve single. The
innovative German firm quickly recognized the benefit of
cooperative effort between these manufacturers, and
immediately sought their assistance in releasing a similar
model. By using a Rotax engine in a bike built by Aprilia, all
to BMW specifications, an important beginner-level bike could
be added to their line at a competitive price.
For BMW to use an Austrian engine in a bike built in Italy
and still have it look and feel like a BMW required careful
design planning. Various configurations were experimented with
before the final nod was given to a draft by freelance stylist
Martin Longmore. An Englishman now living in Bavaria,
Longmore's concept while designing the F650 was "to create a
harmonious blend of aesthetic, technical, functional and
innovative qualities with emotional appeal - a blend providing
that unique touch which makes every BMW absolutely
unmistakable." One look at the F650 will tell you that
Longmore's design was successful. While the bike has many
styling touches of its own, the family resemblance to R-series
Boxers is undeniable.
Chassis design is fairly straightforward. A square-section
steel frame carries engine oil in its top tube and uses the
engine as a stressed-member to increase rigidity. A pair of
41mm forks with a generous 6.69 inches of travel handle
suspension duties, while a single shock with hydraulic preload
adjustment and 40-position rebound damping is used in the
rear. Swingarm construction is of aluminum-alloy to reduce
weight. Braking chores are handled by a single four-piston
Brembo caliper putting the squeeze on an 11.8 inch disc on the
front wheel. A twin-piston caliper grabbing a 10.9 inch disc
is used at the rear.
Equally crucial to the F650's success was an engine that
provided the smoothness and reliability that BMW and its
customers demand. Rotax has long been one of the premier
manufacturers of large-displacement single-cylinder
four-strokes, and their five-valve engine had a proven track
record. Still, BMW made several engine modifications to suit
their needs. Rotax's dry-sump lubrication and single-piece
connecting rod were retained but the engine's roller bearings
were changed to low-friction plain bearings in the interests
of longer life and reduced mechanical noise. A K-series
styled, pent-roof, four-valve combustion chamber with dual
overhead camshafts, bucket tappets and shim-type valve
adjusters was used. The four-valve head provided room for a
dual-plug setup that adds horsepower while lowering exhaust
emissions, an important concern for BMW. Feeding the engine is
a pair of constant-vacuum Mikuni carburetors, each with its
own intake port. Similarly, exhaust gases are carried out by a
pair of headers through twin ports. These modifications allow
the engine to produce a healthy 48 horsepower at 6500 rpm with
41 lbs-ft of torque at 5200.
Riding the F650 shows that BMW's engineers have done their
homework. Performance is linear throughout the entire rev
range, and the motor is surprisingly smooth for a single. This
engine likes to rev, and is more than happy to pull beyond its
7500 rpm redline. However, that tendency to rev means some
low-end grunt has been sacrificed. Wheelies? Sure, with some
effort: But if you're looking for XR600 stump-pulling torque,
you'd better check elsewhere.
Around town, the BMW's long-travel suspension make
commuting a breeze. Handling is quick and predictable, due
mainly to the F650's light (421 lb. wet) weight. Brembo brakes
enable the rider to avoid even the most inattentive commuter.
Meanwhile, the 6.69 inches of suspension travel provided by
the front forks easily soak up even L.A.'s huge
earthquake-sculpted potholes.
While engine vibration makes some dual-sport singles a
chore to ride at freeway speeds, the F650 is as smooth as many
multis. Cruising at 75 mph is comfortable, and vibration isn't
more than a mild buzzing. Only at 80 mph and beyond does the
buzz increase to the point of annoyance. However, buffeting at
these speeds is tiresome due to the tall windscreen. Here the
street-only F650ST's lower screen would be preferable. Seat
comfort is good, allowing several hundred miles to pass
without complaint. Fuel mileage was excellent with a
combination of fast freeway and city riding yielding 50 miles
per gallon. With its generous 4.6 gallon tank, a cruising
range of 230 miles is possible.
experienced riders will also
appreciate its combination of simplicity, light weight and
refinement
Adding to the long-distance capability of the F650 are its
optional saddlebags, top case, heated handgrips and electrical
accessory socket. Our test unit came equipped with a set of
BMW's K-series saddlebags. While pricey at $645 plus another
$197 for the mounting hardware, these bags offer tremendous
carrying capacity. With its ability to carry both a full-face
helmet and 18-pack of cans with ease, the F650 proved itself a
valuable mule. Also available is a top case for $315, plus $96
for the mounting kit. Another option is a set of smaller city
cases for $331. However, like all of BMW's K-series luggage
they still use an awkward mounting system. Attaching the bags
always seemed to take a few minutes longer than we would have
preferred.
Similar to the R1100GS, the F650 version is offered as a
dual-purpose bike. Off-road its light weight puts it miles
ahead of its portly big brother. While nobody is going to
enter an F650 in the Baja 1000, it does possess a surprising
amount of dirt capability. We took the F650 to our official MO
off-road test area and found that, while it did bottom out
over larger bumps and get out of shape on fast bumpy sections,
it could be ridden with reasonable confidence through areas
where larger adventure bikes would fear to tread.
Shorter riders will be glad to hear that BMW offers a
lowering kit for the F650. Unlike other BMWs with adjustable
seat heights, the lowering kit actually drops the center of
gravity, via a modified swingarm and shock stop. Shortened
side and centerstands are included with the kit.
BMW's F650 is a complete, refined motorcycle that'll do
many things well. It's as capable of exploring bumpy dirt
roads as it is commuting or highway touring. While it may be
an attractive model for beginners, experienced riders will
also appreciate its combination of simplicity, light weight
and refinement.
Source Motorcycle.com
Review
The BMW F650, better known as
the Funduro, has been one of the success stories of the 1990s for the German
company, with over 64,000 units sold.
The heart of its appeal is the simple, easygoing
nature of the Rotax derived single cylinder engine, which makes it an ideal bike
for beginners, or those who just ride for relaxing fun.
Formerly manufactured under license by Aprilia of Italy, the all-new F650 for
2000 onwards is now made in Germany and features a redesigned chassis, more
powerful engine, and a welcome dash of street style too.
With optional extras like heated handlebar grips and variable rider´s seat
height, the F650 makes a credible solo touring machine, with the ability to
cruise comfortably all day in the 60-75mph speed range.
For BMW the F650 is an important bike,
representing as it does a serious effort to break into a totally new sector of
the market with an entry-level machine. The Funduro name is a combination of fun
and enduro, which sums-up the bike’s dual-purpose nature. But it’s the price
that reveals more, as it puts the F650 in a different league to previous BMWs.
In Britain, at least, the F650 is barely more than half as expensive as the
R1100RS. It costs only £140 more than Honda’s NX650 Dominator, and will almost
certainly be cheaper when the yen’s strength forces Honda to raise prices in the
near future.
Whilst the F650’s engine is impressive, its
chassis is more so, at least for the road riding for which the bike is primarily
intended. The steel frame, which uses the engine as a stressed member, and the
steel deltabox swing-arm are suitably rigid. Perhaps though, the key to the
BMW’s road going poise is in its suspension, with 170mm of axle movement at the
front and 165mm at the rear.
Serious dirt riding is not perhaps what the F650
was built for. Most enthusiasts will never take it off-road, and instead will be
impressed by such road-friendly details as the wide and clear mirrors, the broad
dual-seat with its built-in carrier and pillion grab-handles, and the
four-gallon tank that allows a range of well over 150 miles. This is a practical
roadster that you could ride around town in the week, and load up with a
passenger and luggage for a longer trip at the weekend.
The bike may have been named the Funduro, but
this winter ride was no fun at all. The motorway was slippery and jammed with
cars, the temperature was barely above freezing, and the low afternoon sun was
combining with my dirt-smeared visor to make visibility almost impossible. It’s
on cold, damp days like this, I reflected, that you really appreciate
traditional BMW comforts such as a big fairing, ABS brakes and heated handlebar
grips. Ironically the bike I was riding had none of those things, which in the
circumstances was unfortunate, but not exactly surprising. For the F650 is the
machine with which BMW abandons tradition to take a bold leap into the unknown.
The familiar blue-and-white propeller badges are in place on its petrol tank and
instrument console, but there are few other clues to link this bike with the
long line of previous BMWs.
The F650 is a revelation, and not just because
it’s the first single-cylinder BMW since the 1960s, and the first bike in the
German firm’s 70-year history to have chain rather than shaft final drive. More
importantly it’s the first BMW to be built not in Germany at all, but in Italy
using components from Austria, Italy and Japan. Radical stuff indeed, for a firm
with such a conservative image.
The desire to reduce development costs, and to
complete the production process in a relatively short two and a half years,
explains the German firm’s decision to team with Aprilia and Rotax in building
what they call the first European motorcycle. Naturally BMW are quick to
emphasise that this is much more than a rebadged model from Aprilia, whose
Pegaso trail bike also uses a 652cc Rotax engine. There are indeed significant
differences between the two singles, which each have dimensions of 100 x 83mm,
and use chain-driven twin overhead camshafts. Most obvious is that the BMW’s
cylinder head has four valves to Aprilia’s five, and is cooled by water, like
the cylinder barrel, instead of air.
The F650 motor also differs in having a
plain-bearing rather than roller-bearing crankshaft, a gear-driven balancer
shaft and a new stainless steel exhaust system. The chassis is derived from that
of the Pegaso, based around a steel, single-downtube frame which incorporates
the oil tank in its main spine. Suspension is a modified version of the
Aprilia’s Showa units, incorporating 41mm non-adjustable forks. The vertical,
rising-rate monoshock can be adjusted for rebound damping, with a conventional
screw at the bottom of the unit, and for spring preload using a remote knob on
the left of the bike. A handful of items, notably the Honda-like switchgear and
Pirelli-shod wire wheels (in 19-inch front, 17 rear sizes), are shared with the
Pegaso. But for all the similarities, the F650 is a unique bike that has BMW’s
stamp running right through it. Although many other components originate in
Italy, they are produced to the German firm’s specification. And construction is
overseen by a group of BMW engineers permanently situated at Aprilia’s plant at
Noale, near Venice in north-eastern Italy.
Styling is a personal matter but I’ll admit to
being impressed with the Funduro’s looks, and also with what seems to be good
build quality. Cost-cutting measures are apparent in the bike’s lack of
equipment, at least by BMW standards, and in the fairly basic nature of a few
parts such as the small metal fuel tap, potentially disastrous spring-loaded
sidestand and non-adjustable hand levers. But the bulbous bodywork, styled by
British freelance designer Martin Longmore, looks fresh and interesting, fits
well and appears well finished. More importantly, the F650 radiates thoughtful
design from the moment you ease yourself into a seat which, at 810mm, is both
low and wide by the standards of big dual-purpose bikes (most of whose seats are
higher by 40mm or more). Even fairly short-legged riders should have few
problems here. The riding position is typical trail bike, with wide, raised
handlebars and fairly forward-set footrests, but the bike feels light and
manageable despite, at 189kg, weighing 25kg more than the Dominator and almost
as much as the twin-pot Transalp.
It accelerates pretty handily, too, thanks to an
engine that feels pleasantly punchy despite a modest peak power output of 48bhp
at 6500rpm. (Aprilia’s Pegaso 650 produces 50bhp at 7000rpm.) The maximum torque
figure of 57Nm at 5200rpm is more relevant, in conjunction with the flat curve.
Aided by crisp response from its pair of 33mm Mikunis, the F650 pulls seamlessly
and respectably strongly all the way from below three grand to the 7500rpm
redline. There’s enough power for a genuine top speed of around 100mph, but a
more relevant figure is the comfortable cruising speed of precisely 80mph. Below
this figure, which equates to 5000rpm in top gear, the BMW’s balancer-shaft
helps give a ride that its impressively smooth by single standards. Go any
faster, and the vibration that comes drumming through the otherwise comfortable
seat soon reminds you that there’s only one big piston banging up and down
below. By then, the exposed riding position normally means you’re going fast
enough anyway. Even BMW couldn’t possibly fit this bike with shaft drive, and
its transmission works well. Certainly the five-speed gearbox is slick, positive
and generally the best I can recall on a BMW. In fact my only real complaint
with the motor is its occasional tendency to cut out at low speed, generally
when I was trickling through traffic on cold mornings. In each case I’d ridden
only a few miles, but the engine had warmed up enough to idle without choke. It
always restarted instantly but the fault was annoying and untypical of an
otherwise sophisticated bike whose manoeuvrability made it excellent in traffic.
If the F650’s engine was impressive, its chassis
was more so, at least for the road riding for which the bike is primarily
intended. The steel frame, which uses the engine as a stressed member, and the
steel deltabox swing-arm are suitably rigid. To my mind, though, the key to the
BMW’s roadgoing poise is in its suspension, which with 170mm of axle movement at
the front and 165mm at the rear has substantially less travel than that of
rivals such as Honda’s Transalp (which has 200/190mm front/rear), let alone the
more dirt-friendly Dominator (220/195mm) and Pegaso (210mm each end). What that
means is that the Funduro can not only sustain its modest top speed with no hint
of a weave, but that it can be braked and cornered considerably harder than a
typically squashy big trail bike. There’s enough travel at both ends to give a
comfortable ride on all but the worst road surfaces. But although a handful of
front brake makes the front end dip more than is sometimes ideal, and for hard
road riding even less travel would help, the forks are well-damped and the BMW
retains control far better than most rivals.
It’s a similar story at the rear, where the Showa
unit kept everything taut even when the roads eventually dried out and the pace
hotted up. Although I’m heavy at 90kg the F650 coped well on the shock’s
standard setting. Adding a few turns of the remote preload adjuster and a couple
of clicks of rebound damping gave a marginal improvement on bumpy bends, though
the real benefit would be for two-up riding. The F650’s wide bars and reasonably
light weight meant that it was fairly easy to flick around, despite a
conservative 110mm of trail. The Pirellis are biased towards road use, and
provided more than enough grip to allow peg-scraping lean angles. The front
brake, a combination of twin-piston Brembo caliper and 300mm disc, gave plenty
of feel and as much power as you’d want given the relatively narrow,
110/90-section front tyre. I was less happy with the 240mm rear disc, which
locked too easily. Naturally you can’t have things both ways, and the BMW’s
road-friendly suspension and tyres are far less suited to the off-road
excursions encouraged by the bike’s name and the hefty bash-plate protecting its
engine.
The Funduro coped well with the gentle trails I
ventured down, happily blasting through loose dirt with the same blend of grunty
motor, balance and suspension control that worked so well on the street. But
faced with mud, water, sand or big bumps, it would inevitably be outclassed by
bikes with serious suspension travel and grippier tyres. Serious dirt riding is
not what the F650 was built for, though. Most people who buy this bike will
never take it off-road, and instead will be impressed by such road-friendly
details as the wide and clear mirrors, the broad dual-seat with its built-in
carrier and pillion grab-handles, and the four-gallon tank that allows a range
of well over 150 miles. This is a practical roadster that you could ride around
town in the week, and load up with a passenger and luggage for a longer trip at
the weekend. The F650 may not have a 100bhp motor, shaft drive, a big fairing or
ABS brakes (and plenty of times during my midwinter test I wished it had the
fairing, at least). But heated grips are an option as are hard luggage, an alarm
system and a catalytic converter. Despite its Austrian engine, British stylist,
Japanese suspension, Italian construction, and despite its equally non-German
price, the F650 Funduro offers much of what is traditionally good about BMW.
NOTE: Some of the photos on
Motorcycle Specs are owned by somebody. If you see any of your
photos, you can let me know so that I can acknowledge it, or if
you object to it, I can remove it altogether. If any copyright
holder objects to their articles being placed on Motorcycle
Specs, it will be removed upon request. Any correction or more
info on these bikes will kindly beappreciated
Contact MePrivacy
Policy
Website Stats