RE: PH2 Heroes: BMW R80 GS

Monday 27th August

BMW R80 GS: PH2 Heroes

In the first of a new series, PH tracks down and rides the most important bikes in motorcycling history



The BMW rider pulling up alongside my steed in the Ringwood traffic knew he was looking at something different. He looked old enough to know - or think he might know - that I was on an original and pristine BMW R80 G/S, the bike that didn't just kick off a whole new class of big-capacity adventure motorcycles but that was also instrumental in saving BMW's entire two-wheeled business.

Maybe he owned one back in the 1980s. Anyway, after a good look up and down and a big thumbs-up, he was off, and I continued on my way, deep in thought.

Riding another G/S some four decades after the last time I rode one was quite a memory shock for me. In 1980, I was a scribbler on SuperBike magazine, the only Northern bloke in a cosmopolitan mix of two cheeky London chappies and two biltong-fed South Africans. The Durban lads were hardcore BMW fanboys. Before coming over to the UK to make their fortune, they had put in plenty of flat-twin miles on both veldt and tarmac. One of them was the editor of the mag, so the non-saffers in the office weren't that surprised when a long-term R80 G/S test bike arrived in the compound.

We were even less surprised to find that the keys were rarely available. That wasn't a massive issue, if I'm honest. Although we appreciated the lightness, quality and civility of BMWs, the Brits on the mag were more into the madness of Japanese multis leavened by a sprinkling of Italian exotica from Ducati, Laverda and MV.


We weren't the only ones who didn't really 'get' the G/S when BMW's first Gelande/Strasse (terrain/street) was released to the goggle-eyed world bike press in 1980. The concept of a dual-purpose bike wasn't new, but the idea of an 800cc shaft-driven BMW one with a single-sided swingarm and a bright orange seat definitely was.

The G/S was particularly weird because it represented such a massive swerve for BMW at the time. For more than half a century, BMW had been turning out expensive, 'premium' naked singles and flat twins designed for relaxed on-road pottering. Then, in the early 1970s, the public's head was turned by explosively quick Japanese superbikes like the Honda CB750 and the Kawasaki Z1.

The British bike industry had already paid the ultimate price for its complacency. By 1979 the Germans were in serious danger of going down the same plughole. Even BMW's poster-child R100RS - the first serious mainstream bike to bring easy three-figure continental cruising speeds within reach of the gentleman rider - didn't have enough developmental headroom in its 1000cc flat twin to stave off the power-driven march of the new Japanese fours.

Something had to be done, and quick. That's what BMW's suits said to Karl-Heinz Gerlinger, the man given the unenviable task of turning the ailing motorcycle division around. The solution turned to be a genuine game-changer, the forerunner of a whole new genre of bike empowering countless round-the-world trips and nearly as many TV series.


The success of the G/S also came as a surprise to BMW. Even at Munich, very few people saw it coming. Its genesis was classic skunkworks stuff. BMW's bike R&D department was crewed by big, fit, stubble-jawed men, not always but quite often called Herman or Manfred. For them, fun was a weekend of two-wheeled dirt-bashing with plenty of wurst and a few steins at the end of it. Annoyingly, however, BMW didn't make any off-roaders. Employees could never be caught riding a bike from another manufacturer, so a group of engineers marshalled by a chap called Laszlo Peres built their own dirtbike, the unprepossessing Red Devil.

Looking very much like the finished G/S, but with a more workmanlike rattle-can paint finish, the Red Devil was about as far removed from the old school sit-up-straight R80 streetbike as you could imagine. It used the sweet-handling R65 frame with a single-sided monoshock swingarm instead of the usual twin-shock setup, and had a high-level exhaust, big front wheel and semi-knobbly tyres.

In 1979 Peres showed the Red Devil to Gerlinger, who was on a bowel-looseningly short 18-month deadline to deliver some results. He liked it. At the very least it would distract folk until the far more important K-series four-cylinder BMWs made their entrance. Gerlinger gave it the green light in 1979 and it was ready to go at the 1980 Cologne show.

Suspension engineer Rüdiger Gutsche, an accomplished ISDT competitor on his own heavily modified R75/5, was the natural choice to develop the bike for motorsport. Single-sided swingarms tend to increase the unsprung weight of the rear suspension, as they need to be pretty beefy to maintain chassis rigidity, but they also simplify rear wheel removal, so that was a handy start for Gutsche. Several Paris-Dakar Rally victories throughout the 1980s by iron-butt supermen like Hubert Auriol and Gaston Rahier testified to Gutsche's skills and to the basic design's desert-smashing talents. Punters naturally wanted the look and as much of the ability of the P-D monsters as possible in a retail offering. The rest is history.


The chap who spotted me in Ringwood on the bike you're looking at here would only have been half right about it being a G/S, because actually it's not a G/S. It's a GS. The distinction is important. The clue is at the back end, where we see the unexpected presence of BMW's Paralever. The original G/S only had the single-pivot 'monolever' swingarm/shaft-drive housing, whereas the later Paralever uses two links to connect the rear drive to the transmission.

So what's the story? This GS is in fact a mule for that following generation of Paralever-equipped BMWs which started in 1986 with the R100GS. It's thought that just fifteen of these GS prototypes were built, and this is one of them.

In the days of that first monolever G/S you could stick any BMW into gear, clamp on the front brake, let the clutch out a bit and amuse your mates as the torque windup through the shaft drive sent the whole back end soaring skywards. The Paralever cuts out much of that shaft-jacking foolishness in exchange for preventing the rear wheel from 'tucking in' quite so markedly under acceleration, or running out of suspension travel so quickly over rocky terrain. It's a good thing.

Nobody's sure how this mule got out of the factory. Normally, these beasts end up in the crusher. I'm glad it did make its own 'great escape', because nearly four decades after I last rode a G/S I'm getting warm feelings about this one.


As with many things in life, it seems a lot smaller than it once did. For various reasons, today's monstrous R1200 GS is not a bike I'd be buying as a long-term ownership proposition. This 1986 GS comes from a different time, when BMW's reputation seemed a good deal more important than image or sales figures. Quality is present in every detail. The bespoke housings for the undersized Motometer quartz clock and tacho flanking the big speedo create a curved dash effect. Unlike the bendy tin stuff you get under a Japanese bike seat, the GS's toolkit looks man enough to dismantle a medium-sized trawler. There's even a useable tyre pump tucked under the tank to inflate the tubeless tyres on their side-laced rims.

The owner of this rare machine is Steve Bateman (Superbike Wholesale Ringwood, 07768 534210, superbikebuyer@aol.com). This one-time short-circuit and endurance racing champ is now a collector and fettler of interesting bikes from recent history. He has replaced the correct flattened-off valve covers with a set of round ones because they're easily interchangeable and make a nice connection with those fearsome Marlboro Elf GS Dakar bombers. The high, narrow centrestand is every bit as hernia-inducing as it was in 1980, but the conventional indicator switch is a blessed relief compared to the over-fussy and unintuitive switchgear BMW went to in later years.

What's it like to ride? In a word: refreshing. Like all GSs, it's a tall bike. The difficulty of deploying the spring-loaded sidestand from the saddle means that anyone under six feet will need to be ready to take on the bike's weight when they dismount.

Time to start. The fuel petcocks (one for each carb) twist and click into their detents with the oiled accuracy of a Heckler & Koch trigger. Click the bar-mounted choke knob and press the starter. After that distinctive BMW kerplunk-spin the GS settles into the smoothest idle I've ever experienced on a Munich twin. Bateman has perfectly balanced the Bing carbs, whose exposed float bowls were always vulnerable to water ingress in a British winter.


Engine noise is practically non-existent, although the dry clutch does rattle like a tin of spanners. Pull in the remarkably light cable to silence the clutch and prod in a gear. The selection process is Germanically deliberate and decisive. Once you're moving, the GS is a doddle to ride. The low-speed balance is fabulous. Introduce even a tiny element of planning into your city riding and you'll rarely need to put your feet down.

Any fears of weight are quickly dismissed. Opinions on the actual weight vary from 185kg to 210kg. The flat-twin BMW engines look big, and the sticky-out cylinders mean you should steer clear of deeply rutted bits of Gelande, but there's not that much heavy metal swinging around inside those crankcases. That's reflected in the GS's quick-steering agility and airy feel.

There's only 50hp to play with, delivered at the sort of revs few are likely to reach (6500rpm). Much better to enjoy the deep Dornier thrum under load and the soft performance that's friendly and accessible rather than in your face and threatening.

If you've ever been on a camel when it's decided to sit down front end first, you'll get on fine with the knees-bend dive of the GS under braking. There's only one disc and one piston, but the action is sharp.


As the Paralever system was refined and improved, the torque arm moved to a new position above the swingarm to boost ground clearance. That's not going to be an issue for me today. The bike would probably permit more larks: it's so docile. But how do you value something like this? I have no number in mind. Whatever it is, it will be a lot higher than the amount featuring on my bank statements, so my progress around the manure-spattered New Forest corner cleverly chosen by photographer John is on the stately side of safe.

By 1987 the G/S's job had been done and it was quietly retired. Funny to think that when the G/S made its debut at Cologne, quite a few journalists wondered what the hell it was supposed to be. Clearly it was too insubstantial for traditional upright BMW touring, and far too big for even semi-serious dirt riding.

Even so, the G/S found buyers. Just under 22,000 of them, in fact. More importantly, it prepared the ground for well over half a million BMW twin-pot adventure bikes - a trend that shows no sign of slowing up, despite the common view that BMW's current adventure bike range has become a grotesquely oversized pastiche of the G/S, and despite the fact that many owners have been bitten hard by corrosion issues, inexcusable really on a machine of this nature.

The first bike to bear the G/S badge was a street machine that could sort of go off road. Any resemblance to an off-road bike was purely coincidental. Das Motorrad, Germany's notoriously partisan motorcycle publication, made the pithy comment that the G/S was "the best road motorcycle BMW has ever built". That kind of sums it up.


SPECIFICATION - BMW R80 G/S
Engine:
797cc horizontally opposed OHV aircooled twin
Power: 50hp at 6500rpm
Torque: 41ft lb at 5000rpm
Transmission: 5-speed gearbox, dry single plate clutch, shaft final drive
0-62mph: 5.6sec
Top speed: 104mph
Frame: Double loop tubular with Monolever swingarm (Paralever on GS prototype shown)
Seat height: 33.9in
Wheels: 21in front, 18in rear
Brakes: (front) single 260mm disc front with Brembo 2-piston caliper; (rear) 200mm drum brake







[Images: John Goodman]

Author
Discussion

bozzy.

Original Poster:

103 posts

14 months

Monday 27th August
quotequote all
Interesting article that. Thanks PH2.

LuS1fer

34,517 posts

181 months

Monday 27th August
quotequote all
Nothing wrong with 70s Honda toolkits. Still have a couple of spanners and the expanding pliers in my current tool kit.

CS Garth

1,729 posts

41 months

Monday 27th August
quotequote all
Very interesting - this and the Tiger Moth article have been excellent and have introduce some great variety. Thank you

Renncamper

7 posts

54 months

Monday 27th August
quotequote all
Nice writing. Still, I’m not sure a Boxer should be called a flat twin...

Robert-nszl1

217 posts

24 months

Monday 27th August
quotequote all
I've often wondered what made these the hit that they are. All bikes sell a dream of sorts, and those rising GSs are often viewed as Ewan Mcgregor wannabes, and are criticised for "never going off road". But the reality is these are great bikes on road. Having owned a couple of more recent GSs (as well as other bikes), while they are big old things, they are by no means the heaviest, the boxer engine has huge character, and they are great all rounders having used mine to both commute (with just a top box) and tour.

The reality is not everyone wants to have sore wrists after a day in the saddle, and the big tourers are often unwieldy in town. And I like the quirky looks of these bikes. I for one am glad Japan didn't completely take over the world. BMW kept the flag flying for European bikes long before the resurgence of Triumph and Ducati and the GS was clearly an important contributor to that.
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2smoke

57 posts

47 months

Monday 27th August
quotequote all
Great article thanks. Looks like a well restored and maintained machine. I'd love a chance to see it up close, it shares so much DNA with the latest R1200GS.

V8 FOU

2,572 posts

83 months

Monday 27th August
quotequote all
Great article Tony. Ah, those SuperBike days! What ever happened to Terry Grimwood?

These are really fab bikes - I always loved the "bumble bee" paint job on the R100 GS. the R80, though is a lot smoother for very little loss in power.

carinatauk

878 posts

188 months

Monday 27th August
quotequote all
This why the G/S made the headlines; Gaston Rahier won the Paris-Dakar on one




I have had the G/S and GS; the monolever was far superior to the paralever. Both were easy to work on, to the extent that I chose a 1984 100GS to go to Gambia on 5 years ago.

Wonderful bikes, not as quick as todays version but far superior, IMHO

Finding a good example of either version is like finding rocking horse pooh. They are out there but the values are steep.

TerryGrim

1 posts

4 months

Monday 27th August
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[quote=V8 FOU]Great article Tony. Ah, those SuperBike days! What ever happened to Terry Grimwood?

I often ask myself that very question.

Bill Ferry

48 posts

90 months

Monday 27th August
quotequote all
Damnation.!
Now you've let the cat out of the bag.. and surely, now the numpty's will want a proper one.!?
B#gger..
The early model GS' were the nicest variants and steadily improved over the years. I have never understood how, when the the later models constantly grew in size, the riders just seemed to get properly smaller.? How do they move one in the garage to get access to the freezer.? defeats me.!
However, with your limited budget [mine too..] if you don't know it, you might want to check out the epic website.. "Car and Classic" where early GS' do appear. It's a simple site to use.. and equally the tremendous Gary Burton at BaMW bikes, he's in Derby. Both are good websites.
Finally, a compliment.. this article is the bestest I have ever seen on the early GS, and I have followed them since those days.
Sadly, I have never owned one, because.. well, life just got in the way.!
Thank you for this.
WF

CAPP0

14,154 posts

139 months

Monday 27th August
quotequote all
Mate of mine has a genuine Paris-Dakar version in his garage. He used to commute on it, it was heavily used and abused, and then, about 20 years ago, it dropped a valve and hasn't turned a wheel under it's own steam since, despite a few of us pointing out to him the value of these now in good condition.

Blackpuddin

8,430 posts

141 months

Monday 27th August
quotequote all
Where did it all go wrong?

CAPP0

14,154 posts

139 months

Monday 27th August
quotequote all
Having piloted one of those ^ through the Atlas Mountains and through sections of the Sahara, I'd say it didn't.

Motorrad

6,667 posts

123 months

Monday 27th August
quotequote all
I have a lot more love and respect for the early bike than what they've become. I'm large and in charge (biggrin) but the modern bikes are just too bloated and overblown imo, water cooling brought some benefits to make up for some of the compromises but unlike the first bikes they just aren't cool.

Pothole

25,976 posts

218 months

Monday 27th August
quotequote all
One of these was my favourite sale from my brief sojourn into motorcycle sales back in 1990-91. All the supposedly experienced salesmen told me not to waste time with this bloke, he kept coming in and looking at the nearly mint black and yellow G/S we had had hanging around for months - I thought it was a bit overpriced but we had a lot in it having taken it in p/ex for a 1500 Gold Wing...I humoured the guy over many boring midweek late afternoons and eventually sold him the bike for the full asking, making me top salesman (again) for the month, scooping the bonus and grinning like the Cheshire cat. He even let me have a quick turn up the road and back. Quite a step up from my MTX125!

Ocellia

147 posts

85 months

Monday 27th August
quotequote all
The BMW engine used in the odd Citroen 2CV as well!
https://www.youtube.com/watch?v=hAocmae9vyE

Loyly

16,353 posts

95 months

Monday 27th August
quotequote all
An excellent article by PH standards! A very good read and an interesting bike.

This was the era when the GS was a bike to respect. You can see in this model the methodical and engineering based thinking behind it. The fact that the bike was a quickly cobbled-together back office project makes it even better.

The modern GS is a ridiculous bike. I like them and they're evidently great at ploughing long distances over road. Quick enough to make most car drivers st themselves and comfortable enough to ride all day. However, they're becoming more and more massive. For longer distance touring, something like a K1600GT would be far better but the Charlie and Ewan crowd want 'the look'.

2smoke

57 posts

47 months

Tuesday 28th August
quotequote all
Whilst I agree some riders are looking to follow a trend. I don't think there are many bikes as capable as a modern R1200GS. It is a machine I didn't want to like and hated the attached cliche and subsequent piss taking as a <40 year old guy, but it really surprised me and I was convinced after an hour's ride. It is so versatile and has tackled anything I've thrown at it. A roads, B roads, byways and motorways. One up, two up, fully laden with or without gear. For this reason it is the machine I choose to ride more often than any of the other three in my collection.
Sure it is a big bike, that's a challenge sometimes as a short ass, but I manage okay. As for the K1600GT that bike is around 80KG heavier, cracking engine though!

73RS

67 posts

144 months

Tuesday 28th August
quotequote all
Friend did the Hardalpi a few years ago on an original one. Went as well as the modern stuff, but so much more compact - and far more interesting. Much more capable than it appears.

runnerbean 14

37 posts

70 months

Wednesday 29th August
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Unsure quite why Mr Middlehurst is so sniffy about the modern R1200 GS - sounds like inverted bike snobbery to me. It's no heavier than the R80 G/S but has two and a half times the power, which makes it a blast to ride.

In typical BMW manner it has been refined over time to be brilliant at what it does, and safer too with ABS etc. As an extra bonus you can see over the top of the car in front, and it's far kinder on the wrists than rice rocket sports bikes.

I do prefer the non-Adventure version as I find 4+ gallons plenty at 45 mpg giving 180 miles between splash and dash.