Kawasaki H2 Mach IV — Classic Japanese Motorcycles — Motorcycle Classics

13 Фев 2015 | Author: | Комментарии к записи Kawasaki H2 Mach IV — Classic Japanese Motorcycles — Motorcycle Classics отключены
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Dave Gurry’s Kawasaki H2 Mach IV

Kawasaki H2 IV

Years produced: 1972-1975

production: N/A

Claimed power: @ 6,800rpm

Top speed: 120mph test)

Engine type:

Weight (dry): 205kg

Price then: $1,386

now: $3,000-$4,500

The bugs are out in today, I’m thinking, as I follow Gurry’s 1972 Kawasaki H2 IV 750 along the back lanes of British Columbia. Then I the spots on my visor aren’t they’re oil droplets carried in the haze that accompanies the big wherever it goes.

Admittedly, has “improved” the Kawasaki’s automatic system to allow extra oil the engine. “I’d rather a little more oil than a piston,” he says. And given the and availability of replacement parts a blow-up occur inside the engine, Dave’s logic is

Then again, anti-social was part of the H2’s ethos. for straight-shot performance in traffic drag races, power was everything else — noise, fuel consumption — was an afterthought.

The H2 had “only one purpose in life,” to Kawasaki’s 1972 sales — “To give you the most exciting and performance.” It also mentioned how the H2 the razor sharp reactions of an rider,” and is “a machine you must seriously.”

Seriously, indeed. Seventy-four explosive horsepower into a powerband only wide; a frame better to a moped; fuel consumption would drop below 20 per gallon; spark plugs fouled in less than 10 of city riding; and all this by clouds of blue smoke and the ring-a-ding racket of a big air-cooled two-….

The motorcycling equivalent of the Pistols, the Kawasaki H2 Mach IV 750 its middle finger firmly in the of respectability when it burst the road in 1972. Essentially a version of the Kawasaki H1 Mach III with equally evil and similarly violent performance, the IV was, in the hands of an inexperienced an accident waiting to happen.

it from a distance was safer climbing aboard,” wrote Mac in his book Classic Superbikes . big Kawasaki’s uncompromising nature quite possibly be outlawed

Tracing the Triples

1972 was a year for quick bikes, and was the class to be in — not least because of the of Formula 750 racing. Norton the Combat version of its award-winning with over 120mph on MV Agusta had announced its 750S a before, the Suzuki GT750 was to be in the showrooms, the Moto Guzzi V7 was launched and Paul Smart won the 200 on the brand new Ducati 750SS.

contribution to the need for speed technology it already understood. were its bread and butter, and the H2 Mach IV owes much to the H1. Producing 60hp at 7,500rpm precious little power those revs) and weighing 410lb, the H1 became the benchmark for street performance. With the of 750cc Superbikes, Kawasaki was to up the ante.

Though it had originally the H2 as a 650, the 750cc imperative the extra cubes an easy and may explain why the H2 engine has somewhat “oversquare” dimensions than the

Instead of the disc- and reed-valve designs then coming on to the Kawasaki stuck to a piston-port for simplicity and compactness. Its 70mm pistons topped a 62mm with a 120-degree crankshaft on six main bearings. Three 32mm carburetors provided the mixture (a pump fed oil to each float bowl as well as to the and a Mitsubishi capacitive discharge system provided the sparks.

Launched in late 1971, the H2 weighed just 40lb than the 500cc H1, yet produced a 74 crankshaft horsepower at 6,800rpm. By its closest power rival in the 750 the Triumph Trident. could only around 58hp. The H2 had significant advantage over its At under $1,400 — including the 10 import duty then in — it was $300 cheaper than the Honda CB750 or the Norton Roadster, and $430 cheaper the Trident.

In spite of the wide-ranging that must have available within the Kawasaki Industries group, motorcycle design did not seem high on list of capabilities. The H2’s tubular cradle was incapable of the vicious thrust of the peaky The frame flexed under while any surface irregularity at would destabilize the front causing a disconcerting weave, and precise positioning on the road of a gamble.

The H2’s weight was also toward the rear, which, with a short swingarm, the front wheel to lift acceleration if the rider was unprepared.

in the hands of a competent pilot, the H2 be made to perform extremely In a 1973 Cycle seven-bike the H2 was awarded top rating, especially in of value for money, beating other contender on performance its own erstwhile successor, the 903cc Kawasaki Z1 .

In 1973, Kawasaki a small number of mainly changes, including a chrome fender instead of the 1972 item. For 1974, the H2 saw numerous changes, including porting and a longer swingarm to tame the power delivery, improve consumption and stabilize the handling. But was running out for big strokers: they couldn’t meet new emission without significant added

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The new realities of the mid-1970s — oil crises, environmental and noise regulations — put the H2 in the position as Richard Nixon. both had to go.

But Kawasaki was ready a winner in the wings: In 1973, the trumped its own ace with the 900cc four-… Zl. And the rest, as far as high-performance are concerned, is a recent, but very history. MC

Press reports

“As expected, the IV is an absolute jet, leaves all of rubber on the pavement, pulls in every gear, and shows no lag as you click your way from to fifth.”

— Cycle World . 1971

“Like its predecessor, the III, the new 750 Mach IV is a rocket. The drawback is that getting to the first, or to the next tavern as the may be, costs money. If your has a gas station and your uncle a tire store you’ll be off than most Mach IV If not, the local gas pump will be on a first name with you and the tire man will you up on your birthday.”

— Cycle . 1971

“The Mach IV as the ultimate stud bike now available in terms of raw power and speed, although it does the refinement of some strictly machines. If being the fastest on block appeals to you, so the Mach IV!”

— Cycle . March 1972

“The H2B is perhaps the best remaining of the superbike concept — where is paramount and very little with it. Its superbike character is in its engine, which has more and performance than any other 750 machine.”

— Cycle Guide . September

“Without a doubt, Kawasaki’s 750 Triple is a bike that has its usefulness. It was conceived at a time the buying public was preoccupied acceleration. Gut-grabbing acceleration.

And else. And the bike delivered to the of mid-12-second quarter-miles and wheelies would stop your

— Cycle World . March

“Time has dictated that a is due. Perhaps overdue. And in a way sad because brute power like the H2 turned a lot of people on at a when all of us could afford to be

— Cycle World . March

• Kawasaki Triples Resource

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