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Horsepower. America's four-wheeled hot rodders have loved the stuff for years. Until now real power's been the exclusive property of guys with blown vee-eights and hemi heads, but at last there's a two--wheeled equivalent to the big-inch vee-eights street rod. Enter the V-MAX. It's a muscle bike like no other. Designed exclusively for America, not only to look good, but to deliver all the horsepower Americans ever dreamed of. It'll accelerate fast enough to shift the motorcycling world on its axis. We're talking raw power here and the rugged good looks that let everyone know you mean business. The aggressive styling could have come straight from the very best Custom shops.
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| WHOLE BIKE SEE THROUGH VIEW |
In back there is motorcycling's biggest rear tire, a 150/90-15 monster that looks big enough for a dragster. it's wrapped around a new disc-type solid aluminum wheel that looks sharper than any custom wheel around. The rear end's set off by a skinnier front tire mounted on a 5-spoke 18-inch wheel. Both ends are covered by chopped fenders and accented by deep chrome. There's even a three-piece stepped seat with a lockable center section that pivots forward to reveal the filler for an under-seat fuel tank that helps keep the V-Max's center of gravity low. Between the bars is a chrome and gold speedometer: nothing else. Where the fuel is stored on other motorcycles there's a large air filter providing improved air flow to downdraft carbs. Mounted in a panel above the air filter cover is a revcounter and a temperature gauge. There are lots of other good looking features to impress everyone down at the drive-in, but when the V-MAX starts rolling it's the incredible motor that will turn the heads. This 1198cc monster produces power like nothing else before it, thanks in part, to a radical cam and four massive valves per cylinder. Short elliptical mufflers do their part to boost power and let everyone know it too. But what really gets this hot rod screaming is a unique new V-Boost System. At lower rpm each of the four downdraft carburetors feeds its own cylinder. But as the revs rise a servo motor opens a butterfly valve between each pair of inlet tracts. Suddenly there are two carbs feeding each inlet port on an intake stroke. It's like having a blower without all the mechanical losses. If anyone's unsure about the V-MAX's powerful potential there are chrome and polished-aluminum highlights that trace the power flow from the large air scoops below the tank, through the motor and out the exhaust.
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| THE 1198 cc LIQUID COOLED V-FOUR ENGINE |
For anyone just looking the V-MAX spells power. Anyone that rides motorcycling's first real hot rod will know that those looks aren't deceptive. Motorcycling finally has the power and it took Yamaha's hot-rod V-MAX to move motorcycling one major step forward. Tires The world's largest production-bike tire is used in rear. lt is a V-rated 150/90-15 with a V-pattern tread. Shaft Drive - A newly designed shaft drive with stronger bevel gears transmits the V-MAX's tremendous power. Fuel Tank - A 4-gallon fuel tank is mounted below the seat. Fuel is delivered by an electric pump and an electric reserve switch is mounted on the handlebars.
FEATURES
Chassis
Frame The tubular steel frame has a specially lowered center section to reduce seat height. The right front downtube and left rear frame tube are removable to ease maintenance.
Shocks
Dual rear shocks have four-way adjustable rebound damping and five preload positions for the massive chrome springs. Wheel travel is l00mm.
Fork
A large 40mm fork is air adjustable and has a balance pipe for ease of adjustment. An integrated aluminum fork brake increases front-end stability. Wheel travel is 140mm.
Brakes
Triple ventilated disc rotors-282mm diameter-are gripped by large 45mm opposed pistons.
Wheels
A newly designed 18-inch cast wheel is used in front. A radical 15-inch solid disc wheel is used in rear.
Seat
The V-MAX has a 3-piece stepped seat design. The lockable center section pivots forward to provide access to the fuel filler cap.
Controls
All handlebar controls are finished in silver.
Gauges
A single speedometer is mounted above the triple clamps. Separate tachometer and temperature gauge are mounted on a tank-top panel. All gauges have white faces.
Air Filter
Air filter, fuses and hydraulic reservoir are mounted under a lockable false-tank panel.
Cable Covers
Chromed springs cover the control cables.
Headlight
A small circular headlight is used.
Air Ducts
Air ducts above the cylinders help to highlight the flow of power from the intake system, through the motor and out of the exhaust system.
Motor
Engine The 1198 cc liquid-cooled V-Four engine has double overhead camshafts and four valves per cylinder.
Piston
A specially lightened piston and wrist pin improve engine performance.
Crankshaft
A new hardening and heat treatment process improve crankshaft and con rod strength.
Valves
Large 30.5mm intake and 25.0mm exhaust valves are controlled by stronger valve springs.
Camshaft
A special high-performance high-lift camshaft is designed to produce maximum horsepower.
V-Boost
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| V-BOOST FUNCTION |
A unique V-Boost System gives a Turbo-like power boost to the V-MAX motor. Four downdraft carburetors feed the cylinders through individual inlet tracts. However, the tracts between cylinders one and two and cylinders three and four are separated by butterfly valves. The valves are controlled by servo motors that measure engine rpm. At approximately 6000 rpm the servos start to open the butterfly valves until they are completely open at 8000 rpm. With the butterfly valves open each cylinder on an intake stroke is fed by two carburetors, rather than a more conventional single unit. Horsepower is considerably increased especially in the mid-and high-rpm range.
Transmission
Power is transmitted through a five-speed gearbox and a shaft final drive.
Muffler
Short elliptical mufflers help to maximize power output.
Carburetors
Four 35mm downdraft Mikuni carburetors mix fuel for the V-MAX motor.