2012 Motus MST-R First Ride — Motorcyclist Magazine

2 Май 2015 | Author: | Комментарии к записи 2012 Motus MST-R First Ride — Motorcyclist Magazine отключены
Motus MST

America’s sport-tourer

The base-model shown here in silver the optional top box fitted, will use mainstream suspension, braking and wheels, to keep the price at a affordable level.

The base-model shown here in silver the optional top box fitted, will use m

Fate seemed to conspire me. I’d flown to Los Angeles to a pair of work-in-progress Motus prototypes-the MST base model and the MST-R-only to arrive just in for the ominous-sounding Carmageddon. News were forecasting traffic of epic proportion, caused by the closure of the San Diego Freeway the Sepulveda Pass to demolish an bridge.

I needn’t have With most locals to leave home, Carmageddon was a non-event. I easily clocked than 200 miles on everything tight canyons to high-speed, Coast Highway sweepers to city streets-capped with a visit to the fabled Rock on Mulholland Highway to gauge reaction to the first four-cylinder built in America since War II.

One thing is certain: The Motus attention, thanks to what is the most unique engine in modern-day motorcycling. Powered by a (1645cc), liquid-cooled, pushrod V4 by Katech, a legendary Detroit firm, the so-called KMV4 like half a NASCAR V8. One from the twin Two Brothers carbon-fiber exhaust cans bike nuts running.

The Baby Block is the literal and heart of the MST, a clever mix of ideas and new technology that the attitude and character of this machine. What’s more than a pushrod V-motor? Lee Conn, who, along designer Brian Case, Motus. A high-displacement pushrod could be hugely reliable, and understressed, so it could last a time.

Katech, known for on GM’s many championship-winning cars, designed an exceedingly V4 that looks familiar to who’s ever studied a Chevy.

A single, roller-bearing chain-driven off the crank, sits in the valley between the cylinders, steel pushrods operating two valves per cylinder. The engine to a six-speed gearbox designed by Miller-another tier-one GM partner in the area. The powertrain is positioned in the frame, like a Honda and tilted 15 degrees forward for clearance.

Case designed the steel-trellis fabricated from 4130 tubes, and tied to a tubular that acts on a progressive-rate linkage. Reasonably aggressive geometry and a claimed 52/48 forward weight bias to emphasize sport over .

Climb aboard and you encounter a natural riding stance. height is accessible at 31 inches, a 32-inch option for taller The seat, made for Motus by in Florida, gives good support, though the pad would from additional softness, or a gel insert.

Low-set footpegs and clip-ons deliver an upright, riding position that can be tailored by adjusting the bars or back a full 5 inches, with 15 degrees of angle Footpeg position is fixed, but the on the shift lever and brake can be adjusted. The windscreen is manually between four positions, a maximum of 3 inches.

The middle settings create a of still air at 85 mph, with buffeting despite what to be a narrow bit of Plexiglas. Optional will be offered, too.

I was during start-up that a still-green prototype demands one allowances for a work still in The Magneti Marelli ECU’s mapping hasn’t been yet, so it required some to coax the V4 to life. Blipping the in neutral produces a slight reaction, as the lengthwise crank the bike to the side, but this the instant you select a gear.

counter-rotating balance shafts into the gearbox cancel torque reaction completely

Motus MST
Motus MST

A smooth-running engine is a prerequisite for touring, and the Motus doesn’t With a 90-degree cylinder providing perfect primary and those twin counterbalancers secondary vibration, there’s no buzzing below 7000 and only a slight tingle the footpegs above that With the rev limit set at 7800 this is hardly an issue.

The happy spot lies 3000 and 6500 rpm, you surf the serious waves of flowing from the half-a-V8. A heat emanates from the at rest, though you don’t this much at speed.

to right) Brian Case and Lee pose with the two Motus at the L.A. Calendar Motorcycle in Long Beach, California, the Motus made its West debut.

(Left to right) Case and Lee Conn pose the two Motus prototypes at the L.A. Cal

The is the first production four-… engine equipped with GDI direct injection). A single sits beneath the butterfly of Katech-made 40mm throttle with carbon rails fuel below the valves and into the combustion chamber. injection delivers a very atomized, cooler fuel that is said to increase improve fuel economy and emissions.

Though a proven technology on the side, the GDI system fitted to the still needs some Fueling is fine under acceleration, but it’s too abrupt off throttle, as I found many midway through fast in the Santa Monica Mountains. this is just a question of the fuel-injection map.

The transmission is still a pre-production component, as Shift action, though is harsh, and the clutch is unacceptably quickly cramping your hand in heavy traffic. The ratios are well chosen,

The extremely torquey engine an ultra-long first gear, by three evenly spaced and then an overdrive fifth and for supremely relaxed high-speed engine only turns rpm in top gear at 75 mph. The gauge incorporates a shift light, but also like to see a gear V4 is so torquey, and roll-on acceleration so that it’s difficult to track of which gear in!

They say: Throttle for the soul.

Motus MST
Motus MST
Motus MST
Motus MST
Motus MST
Motus MST
Motus MST
Motus MST
Motus MST

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