Posted on June 10, 2010 by Fahad Majidi
Any motorcycle capable of lapping the Isle of Man TT course at over 117 mph has got to be special. When the machine in question is a standard roadster, complete with lights, generator and pillion seat, and has since benefited from a further five years of development, it is clearly very special indeed. This is just part of the pedigree of Yamaha’s stunning FZR 1000.
The big four began life in 1987, immediately capturing the imagination of the motorcycling public and becoming a best seller. In 1989 it received an extra dose of desirability with the arrival of the EXUP version, and then reveled in a further revamp for ‘94’. Throughout it has enjoyed substantially the same ‘Genesis’ engine technology: a liquid cooled four with dual overhead camshafts and no fewer than five (three inlet, two exhaust) valves per cylinder.
Long gone are the days when the Japan built superb engines which utterly outclassed their chassis. Tying the FZR together is huge aluminium ‘Deltabox’ frame, stiff as a bridge but infinitely lighter. A huge aluminium swing arm is similarly rigid. The latest versions of the FZR were ultra stiff Ohlins ‘upside-down’ front forks, and a high specifications rear monoshock. Both are adjustable for spring pre load and damping to suit different riding styles and conditions.
Filed under: Bikes, Yamaha | Tagged: aluminium, Deltabox, EXUP, FZR1000, Genesis, liquid cooled, Man TT, monoshock, motorcycle, technology, Yamaha | Leave a comment »
Posted on June 10, 2010 by Fahad Majidi
When it comes to ultimate super bikes, they don’t come much more ultimate than this, Suzuki’s GSX-R1100 is one of the biggest, most powerful, and awe inspiring superbikes ever built. Unveiled back in 1986 to enormous acclaim, the GSX-R1100 (like its pioneering smaller siblings, the (GSX-R750) has undergone many changes over the ensuring years.
At its launch the big GSX-R was light, very powerful and wickedly fast. And over the years the Suzuki, pressured by competition primarily from Yamaha’s FZR 1000, piled no more and more power. But the trade off was more and more weight gained, and by the early 1990s the GSX-R1100 had become a muscle bound monster. Putting out 145 bhp in stock (but unrestricted) trim the GSX-R scaled over 500 lbs fueled up. That’s a lot of bike producing a lot of power.
But now the GSX-R1100 has undergone another transformation and although it is still big heavy and fast, it is no longer the bad mannered behemoth it once was. Gone is the wayward handling and peculiar steering, replaced by an altogether more docile beast. What happened was the Suzuki was that Suzuki radically uprated the GSX-R1100’s motor, turning it from an oil-cooled to a water cooled affair.
They did the same thing to the GSX-R750 in 1992 and the result was a biker that was better than ever, but not by much. The main cause for adopting water cooling is that it’s more competent, but because it’s quieter an important consideration in these days of increasingly stringent noise regulations.
Filed under: Bikes, Suzuki | Tagged: bike, FZR 1000, GSX-R1100, GSX-R750, motorcycle, power, speed, super bikes, Suzuki, Yamaha | Leave a comment »
Posted on June 9, 2010 by Fahad Majidi
By the mid eighties, motorcycle design had come a long way. From the early, over-powered and ill handling Japanese superbikes, had evolved machines which took their cues from the racetrack and had tyers, suspension and steering to match. Suzuki’s GSX-R750 and Yamaha’s FZ750 typified the new breed. But there will always be those who are less concerned with all around performance than with sheer, brute power and thrill of violent standing start acceleration. The Yamaha V-Max was designed just for them.
When it was first introduced in 1985, the V-Max caused a sensation, as much for its styling as its potential performance. The high speed barred, low slung look was based on the American cruiser style bikes made for showing off an illegal sprints on impromptu drag strips on public roads. Real drag bikes had already evolved into long wheelbased, front heavy machines designed specifically for speed. Cruiser style puts the emphasis on looking fast, lots of noise and ability to leave long strips of burnt rubber off the start line are more important than actual times.
The V-Max is completely dominated by its engine. At the time its V-four layout was a high tech departure from the in line fours that powered most Japanese motorcycles. It featured a novel carburetor arrangement which meant each cylinder was fed by two carburetors, and then a gate moved to allow those same two carburetors to fill a different cylinder, thus eliminating the ‘dead’ time that usually occurs during a bike’s combustion cycle. And once on the move, the slightly lumpy power delivery, and the sheer amount of power it delivers – distract attention from the bike’s handling.
Filed under: Bikes, Yamaha | Tagged: American, bikes, design, fast, GSX-R750, handling, high speed, Honda, Japanese, machines, motorcycle, speed, superbikes, Suzuki, V-four, V-Max, Yamaha | Leave a comment »
Posted on June 9, 2010 by Fahad Majidi
When it comes to bringing technological innovation to mass produced motorcycles, Yamaha leads the way with its revolutionary GTS 1000. The GTS was the first mass production Superbike of the present age to use a front suspension system that didn’t employ a couple of telescopic forks and a chassis that doesn’t run more or less in a straight line from the steering head to the swingarm pivot.
Motorcycle manufactures have long searched for a method of suspending the front wheel of a motorcycle that doesn’t rely on conventional telescopic forks. ‘Teles’ are unsatisfactory for several reason, they are prone to flexing under braking and when corning, and then cause the front end of the bike to ‘dive’ under braking. The search for a realistic alternative has been the Holy Grail of motorcycle engineering.
Yamaha’s alternative front end, as featured on the GTS 1000, in a solitary sided front swingarm with hub-centre navigating not unlike one front wheel of a car. Separating the steering purpose from the suspension should, in theory, produce a bike that steers, corners and brakes better than a bike with conventional forks.
The GTS’s Omega chassis is different from that of a conventional bike because the front suspension removes the necessity for a headstock. The aluminium alloy frame is a squat box shaped affair which wraps around the engine, on to which are bolted the front and rear suspension systems, as well as the sub-frames necessary for the steering, seat and bodywork.
The result is a bike that has most sophisticated front suspension systems in production. The bad news is that, in the case of the GTS at least, this kind of suspension system offers no significant improvement over conventional telescopic forks. Being designed as a sports touring motorcycle the GTS is too long and carries too much weight to reap any benefits from the hub-centre steering other than the elimination of the front end drive under braking.
Filed under: Yamaha | Tagged: bike, bodywork, GTS 1000, headstock, Holy Grail, motorcycle, Omega Chassis, sports, steering, Superbike, Telescopic forks, Yamaha | Leave a comment »
Posted on May 6, 2010 by Fahad Majidi
The Dyna Glide features Harley-Davidson’s latest chassis, which Harley themselves proudly claim is the result of computer aided design (CAD). But it’s a far cry from the exotic aluminium beam frames favored by the latest Japanese race replicas. This one’s steel, good ol’ US steel, a direct spiritual descendent of an earlier generation of America iron horses.
But the frame is, in its modest way, a new departure for Harley-D as they progress ever-so-cautiously into the future. First seen on the 1991 Sturgis model, it features a refinement of the system of rubber engine mounting previously fitted to Glide and Low Rider models. And for the first time, it is possible for a normal person to ride a Harley at sustained speed without going numb from the wrists down.
Purist might frown. The essence of any Harley is that pounding V-twin beat. Unlike the anodyne whirr of Japanese multis, you’re supposed to feel it. Dyna Glide’s endeavor to offer the best of both worlds: you can tell there’s 80 cubic inches of Milwaukee muscle down there, all right, but it doesn’t put your circulation in a sling.
To ride, these are the smoothest Hogs yet, by a margin. Even sensitive souls will use power outside the Evolution engine’s hitherto rev-range without worrying that the entire bike’s about to fail to bits. Now you can happily ride at low revs where other Hogs quake and shudder. Or at high revs where your fillings used to be in danger of shaking out. Without laying a hand on the engine, rubber mounting has effectively widened the big Vee’s power band.
Filed under: Harley Davidson | Tagged: aluminium beam, America iron horses, Dyna Glide, Harley Davidson, Japanese race, Milwaukee muscle, speed, Sturgis model | Leave a comment »
Posted on May 5, 2010 by Fahad Majidi
When Triumph rejoined the motorcycle manufacturing fray in the early 1990s the two wheeled world was impressed. And old and revered name had been applied to a thoroughly modern range of motorcycles and was being sold at prices that allowed Triumphs to compete directly with the Japanese factories.
A few years down the line Triumph have expanded and revised their range, dropping models that didn’t sell well and introducing new ones they hoped would. The speed Triple is one such machine, one which has been received with open arms by the motorcycling fraternity.
Whilst some manufacturers have gone all out at the retro market, aiming traditional looking machines at the born again biker, Triumph have taken a different approach. With speed Triple they have taken an existing Superbike from their range, the Daytona 900, taken off the fairing, and tidied up what is underneath to the point where it is aesthetically pleasing (not an easy thing to do with a modern water cooled motorcycle). The result is one of the leanest, meanest looking bikes around, a café-racer for the ‘90s, not a lash-up of bits and pieces designed to look like something from the mid-1970s.
The engine of the Speed Triple is the same excellent unit that powers a whole variety of Triumphs, from the Trophy 900 to the Daytona 900. it is a water cooled DOHC 12-valce in-line three cylinder that puts out 98 bhp and 60 lb/ft of torque, enough to dispense with one of the usual six gear rations. Not massive numbers for a 900, but sufficient to give Speed Triple a top speed of 140 mph.
Filed under: Triumph | Tagged: bike, café-racer, Daytona, Japanese factories, machine, motorcycle, motorcycles, retro market, six gear, Superbike, Triumph | 1 Comment »