Showing posts with label 1970s Motorcycles. Show all posts
Showing posts with label 1970s Motorcycles. Show all posts

Yamaha YR5

Yamaha YR5 1970s Japanese classic motorbike

The YR5 is a small, but perfectly-formed 'Jap classic'. Torakusu Yamaha founded Nippon Gakki in 1897. The firm went on to become one of the world's biggest makers of musical instruments. In '55, it branched out into motorbikes. Some might say they made sweeter music than Yamaha's previous products! The company logo - a tuning fork - has appeared on the tanks of millions of bikes since. Certainly sweet music to a salesperson's ears! One of the best-sellers was the YR5.

The 'big four' Japanese bike manufacturers introduced precision-engineering hitherto unseen in the industry. Indeed, Torakusu Yamaha had trained to be a clock-maker, prior to starting up Nippon Gakki. The first Yamahas were built with machinery previously used to forge aircraft propellers. Now, that is the kind of component that needs to be got right!

The YR5 was a supreme example of early Japanese bike building. It reached a top speed of 95mph - from only 350cc. Engine layout was reed-valve 2-stroke. In tandem with that, the YR5 weighed just 330lb wet. Acceleration was fierce - right up to 7,000rpm. Traditionally, there has been a trade-off between 'stroker' speed and reliability. The former tended to come at the expense of the latter. Yamaha's 2-strokes, though, gained a reputation for robustness - relatively so, at any rate. The YR5's handling and braking were equally solid. Design-wise, neat and tidy styling set off pristine paintwork. As you would expect, then - with a competitive price-tag attached - the Yamaha YR5 sold by the shedload!

MV Agusta 750 Sport

MV Agusta 750 Sport 1970s Italian classic sports bike

The MV Agusta 750 Sport was race-bred. A straight line could be drawn from the roadster to Meccanica Verghera's competition machines. They were fettled in Gallerate, near Milan, Italy. MV ruled the racing roost, at the time. The 750 Sport's clip-on 'bars - and humped-back seat - gave the game away. Add to them, a 4-leading-shoe Grimeca front brake - and a chrome quartet of megaphone exhausts. All were clear pointers to the Sport's race-track roots.

The 750's top speed of 120mph was good going in the Seventies. Especially, since the bike was a tad portly. It weighed in at 506lb. Its in-line 4-cylinder engine produced 69bhp - at 7,900rpm. Power was supplied via gear-driven twin overhead camshafts.

Compared to its rivals in the showrooms, the 750 Sport was expensive. Suffice to say, it did not sell well. To be fair, MV had little choice but to up the price. The complexities of the Sport's engine - and labour-intensive production processes - all had to be paid for. From a purely commercial standpoint, then, the Sport turned out to be another nail in MV's coffin. Count Domenico Agusta had founded MV, in '45. In '71, he suffered a fatal heart attack. With him went the soul of MV. Indeed, it was not long afterward that the marque shut up shop. The lacklustre sales of the 750 Sport had not helped. From a non-commercial point of view, however, the MV Agusta 750 Sport summed up the spirit of motorcycling like few other bikes!

Ducati 250 Desmo

Ducati 250 Desmo 1970s Italian classic motorbike

Ducati's 250 Desmo was a nailed down design classic! The famous firm began in Bologna, in '26 - producing electrical parts. That might generate a few wry grins amongst bikers of a certain age. Italian machines have traditionally been praised more for aesthetic than technical perfection.

Ducati's signature set-up, back in the day, was 'desmodromic'. It saw engine valves closed by cams - rather than springs. That provided more precise control of valvegear moving parts. For a marque so synonymous with styling, 'desmo' was definitely a feather in Ducati's cap. The 250 was the baby of the newly engineered range. Though of reduced capacity compared to its bigger siblings, the 250 was still blessed with a fair lick of speed. Indeed, it fell just a tad short of the totemic 'ton'. In handling terms, too, the 250 had plenty in its favour. Weighing in at less than 300lb - and with finely-tuned suspension - its rubber side remained resolutely glued to the tarmac. Saying that, clip-on 'bars, rear-set footrests and a solo seat coaxed riders into finding the limits of adhesion!

The Desmo was designed by Leo Tartarini. He drew the 250 with simple, strong lines. They were all that was needed. The bike had dynamism built-in - by dint of its 'racy' parts list. So, the 250 was as strong visually, as it was technically. Certainly, its desmodromic valve-train was a key asset. But, it also possessed poised and purposeful looks - belying its size. Dimunitive it may have been, but the Ducati 250 Desmo married technological innovation with innate good looks!

Suzuki GS1000

Suzuki GS1000 1970s Japanese classic motorbike

The Suzuki GS1000 was not blessed with the most exotic styling, ever to have flowed from a designer's pen. Indeed, visually, it was straight out of Studio Old Skool. But what the GS lacked in aesthetics, it more than made up in the technical stakes.

The heart of the GS was its in-line four-cylinder engine. We are talking 'classic Jap' here. The bike cruised to a top speed of 135mph. Cornering was consistently solid and stable. Its frame was robust, suspension adjustable and tyres wider than normal for Seventies superbikes. So - properly maintained and adequately set up - handling was never an issue. When the time came, its dual front disc brakes were more than capable stoppers.

Anyway, beauty is, as they say, in the eye of the beholder. For some, the GS was a beautiful bike, precisely because it was big and basic - not despite the fact. 'That's the way a motorcycle should look', they would have said. 'Forget about frills 'n' flimflam!' Heavy metal over cosmetic plastic. So, the Suzuki GS1000 was something of a wolf in sheep's clothing. On the surface, it seemed a placid enough beast. Even slightly staid, perhaps. But rider beware - if you twisted its throttle!

Benelli 750 Sei

Benelli 750 Sei 1970s Italian classic motorbike

It is a truism that the Italians are past masters of design. In engineering terms, too, they have often been ahead of the game. How far the latter held true for the Benelli Sei, though, is a moot point. For sure, the Sei was visually impressive. Six-cylinder bikes usually are. The jury was out, though, in the court of motorcycle performance stats.

Certainly, the Sei's engine looked superb. For non-Europeans, by the way, sei is Italian for six. As did its twin sets of triple-stacked exhaust pipes. When it came to horsepower, however, it was another story. Even by '75 standards, the Sei's top speed of 118mph was hardly earth-moving. Not for a six-cylinder sports bike, anyway. In the market-led surge of Seventies superbikes, Benelli's rivals all supplied quicker machines. And Ducati, Laverda and Moto Guzzi needed half as many pots. Or less!

It was not like Benelli did not know how to make bikes go fast. After all, they had been GP 250cc world champions, in 1950. And then again, in '69. But - at least in the case of the Sei - race success did not trickle down to the roadster. Saying that, the sleek contours of the Sei's 'six-pack' bodywork certainly helped. So far as buyers were concerned, they went a long way toward offsetting what the Benelli Sei lacked in the 'go' department!

Kawasaki Z1300

Kawasaki Z1300 1970s Japanese classic motorbike

The Kawasaki Z1300 is one of a select set of bikes that sport six-cylinder engines. Such a powerplant is always going to pack a punch. In the case of the Z1300, though, it does not make quite the impact you might think. Why so? The radiator plastered across it. In profile, it is still an impressive piece of kit. But - viewed head-on - the 'Z13' paid a visual price for its water-cooling.

Top whack for the big 'Z' was 135mph. It reached that speed with consummate ease. The inline 1286cc motor gave an output of 120bhp. Manoeuvrability-wise, a bike with a wet weight of 670lb was never going to be agile. That said, the Z13's handling was impressive for a bike of its size.

The Z1300 will forever be bracketed with Honda's CBX1000Z. Another Seventies siren, that machine, too, radiated 'six appeal'. The CBX, though, was a brash brute of a bike - more muscular than the Z13. The latter blended power with refinement. Its shaft final-drive, for example, was much easier on the fingers than oil-soaked chains! So, in many ways, the Kawasaki Z1300 was the perfect motorcycle. So long as you were not a designer. In which case, that pesky radiator grille rather upset the aesthetic applecart!

Honda Gold Wing GL1000

Honda Gold Wing GL1000 1970s Japanese classic motorcycle

In its day - between '74 and '79 - the Honda Gold Wing GL1000 was a luxury motorcycle. Then again, Gold Wings always are! Whichever 'Wing' you plump for, there will be a few constants. It will be big, it will be heavy - and, surest of all, it will be comfortable. So much so, indeed, that extra care may be called for. When riding a motorcycle, it pays to be alert. On a bike as relaxing as the Gold Wing, that could pose a problem!

Not that such concerns have harmed the Wing's sales. The GL1000 had a five-year production run - from '74 to '79. Obviously, it was doing something right. Overall - given its gargantuan girth - the Wing was a smooth and compliant mount. A dry weight of 571lb was a lot to coax through corners - and a handful to haul up. On both counts, though, the Wing scored well. Just in case, the 'Aspencade' came with a compressor ... for on-board suspension adjustment.

The Gold Wing is a bike with a cult following. For an owner, the 'season' starts early and ends late. Summer rallies cascade like confetti ... for those married to a Wing! The bike was always big in the US. And the Gold Wing has graced many a European get-together, too. In fact, the Gold Wing has gone global. Wherever there is a road, there will be a Honda flying up it, sooner or later. And - with a top speed of 122mph - the GL1000 will probably be sooner!

Kawasaki Z1

Kawasaki Z1 1970s Japanese classic motorcycle

The Kawasaki Z1 was nick-named the 'King' ... which kind of says it all! Suffice it to say, it was well-received - on its release, in '73. Riders had been putting up with past its sell-by date technology for years. As often as not, it was down to outdated management techniques. All that was blown away by the Oriental invasion. When the Japanese - and their new wave of machines -disembarked at the Isle of Man, 'Brit bikes' were dead in the water. The TT wins which followed presaged the future - not just for racers, but roadsters. When the Z1 hit the showrooms, the future had arrived.

The Z1's twin-camshaft, four-cylinder motor left its road-going rivals reeling! The ageing 'thumpers', twins and triples simply could not compete. The Z1 took cycle parts, too, to another level. Performance stats had gone up a gear … well, several gears, actually! The 'King' came, saw, and conquered! Before long, the British bike industry was a mere memory.

The new bike heralded Kawasaki's iconic 'Z'-series. A plethora of 'superbikes' - from the 'big four' Japanese manufacturers - followed. Never again would bikers settle for second-best. From that point on, a test-ride delivered outstanding performance, handling and braking - or the deal was off! The Kawasaki Z1 had secured its place in motorcycling's pantheon. As for Brit bikes ... the king was dead, long live the 'King'!

Moto Guzzi Le Mans 850

Moto Guzzi Le Mans 850 1970s Italian classic motorcycle

Moto Guzzi is rightly renowned for rugged, reliable machines. If any bike is going to get from A to B, a Guzzi stands as good a chance as any. One model, though, that had more going for it than mere practicality, was the Le Mans 850. Strong and purposeful, certainly. But, also a kingpin of two-wheeled design.

The Le Mans' top speed of 130mph was plenty impressive, in '76. Especially, since it was delivered by shaft-drive. A relatively heavy power-train, it is more associated with low maintenance, than high performance. So, like its second to none Italian styling, the Le Mans motor was simple - but effective.

The engine in question was an across-the-frame V-twin. So interlinked is it with Moto Guzzi, that it has attained iconic status among fans of the Mandello del Lario marque. Rather like another well-known V-twin - made in Milwaukee. Except that Harley-Davidson opted for a longitudinal layout. Guzzi's mill was first installed in a 3-wheeler ... built to cross mountains. Suffice it to say, torque was not an issue! It would be a long journey from such icy wastes - to the furnace of France's most famous racetrack. But, the Le Mans ate up the miles ... and never missed a beat. Which probably goes some way to explaining why Moto Guzzi - founded in '21 - has outlasted any other European motorcycle manufacturer. The Le Mans 850, then, blended style, power and solidity - in pretty much equal measure!

BMW R90S

BMW R90S 1970s German classic motorcycle

The BMW R90S' biggest asset was its engine. The 'Boxer' has been a BMW bastion for decades. It was thus dubbed because of the way the flat-twin's pistons 'punch' their way in and out - or, 'reciprocate', for the technically-minded. The set-up provided surprisingly swift progress. It is, after all, not a layout famed for its sophistication. However, it was well-balanced and, of course, impressively engineered.

Okay, so the R90S may have been a tad behind some of its rivals in all-out power terms. But, it more than made up the deficit with its styling. A neat bikini fairing topped off stylish smoked orange paintwork.

Within biking circles, BMWs - and their riders - enjoy a unique reputation. A BMW has long been the machine of choice for the respectable, law-abiding biker. Smooth, suave and well-heeled, 'hell-raising' does not come naturally to them. BMW bikes were always a natural fit. In its blending of upright solidity - and dashing good looks - the BMW R90S is considered a two-wheeled design classic.

Laverda Jota

Laverda Jota 1970s Italian classic motorcycle

The Laverda Jota was a stalwart of the Seventies superbikes. It combined impressive performance with Italian styling. In '76, the Jota's top speed stat of 140mph was admirable. Particularly, given that it was sourced from just three wallet-hugging cylinders!

Yet - for all its virtues - the bike might never have been launched. Prior to the Jota, Laverda had knocked out a few frankly average motorcycles. Average, but affordable. At the same time, a wave of cheap cars - like the Fiat 500 - rolled into showrooms. Non-bikers - especially, those with families - tended to plump for four wheels. As a result, Laverda came close to going out of business. In the nick of time, the management changed tack. They gave the green light to the two-wheeled exotica for which the firm is now renowned. Classic bike aficionados will forever be in their debt.

But, the bike's British importer also deserves credit. It was they who suggested to Laverda's top brass that the latter pack more power into what was already a perfectly pukka motor. Thank goodness, the marque's managers rose to the challenge. Laverda lovers have not stopped dancing since! Now, they had an engine which did justice to the Jota's impeccably-drawn lines.

Honda CBX1000Z

Honda CBX1000Z 1970s Japanese classic motorcycle

The Honda CBX1000Z was a child of its times. In the Seventies, performance was everything. Japanese superbike performance, that is. At the time, the 'Big Four' - Honda, Suzuki, Kawasaki and Yamaha - were more concerned about how a bike went than how it looked. The 'CBX' could have been cited as a case in point. Its inline-six motor was prioritised over other areas of the bike. Its 24-valve DOHC air-cooled inline-six motor, to be precise. It had been designed by a one-time GP engineer. Most famously, Mike Hailwood's Honda RC166 racer had displayed the virtues of a 6-cylinder layout.

Given the girth of its 6-pot block, the CBX handled well. Its manoeuvrability was still more impressive when its cycle parts were factored in. By today's standards, the tubular steel frame, telescopic forks, narrow wheels and high-profile tyres were spindly. And dwarfed by the mass of the motor. Straight handlebars - and twin rear shocks - were similarly conventional. In fact, the width of the engine was deceptive. Just 2″ wider than the CB750. That was due to its unusual layout. The alternator and ignition parts were located behind the block. Well out of the way, should the bike ever find itself sliding down the road!

Flat out, the CBX did 140mph. Striking though that was, it was as nothing next to the noise the bike made reaching it. The high-pitched howl of a CBX at full chat is something that once heard, is never forgotten. Especially with a slightly less than legal pipe fitted. At which point, it sounds as much like a jet plane as it does a motorcycle! Sadly, the CBX did not sell well. In time, its design would be diluted down into less extreme machines. But, motorcycling would be the poorer without bikes like the CBX. Look on them as a challenge. Get a corner just right - and there are few feelings like it. The Honda CBX1000Z was flawed, for sure ... but fantastic fun!

Ducati 900SS

Ducati 900SS 1970s Italian classic motorcycle

Of all the Seventies superbikes, the Ducati 900SS was one of the most pure of purpose. Unburdened by such 'add-ons' as an electric start and a pillion seat, the SS roared 'race-bred' - as loudly as its Conti pipes!

Ducati's proprietary desmodromic valve-gear took pride of place in the 900's V-twin engine. As a result, it solidly piled on revs - enough for the Duc to accrue a top speed of 132mph.

Yet, the 900's technical prowess seemed to fade into shade, in light of its visual virtues. Achingly good-looking, the Ducati 900SS is arguably beyond compare, styling-wise!