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Road Test
 Yamaha Crux
  Introduction
  Design & Engineering
  Engine, Transmission & Performance
  Ride & Handling
  Fuel Economy
  Technical Specifications
  Verdict

Source Autocar India February 2001

 Engine, Transmission & Performance

To be able to get a reasonably accurate and subjective feel of any bike's engine Performance, it's imperative that the rider is able to concentrate on the riding without having to pay lots of attention to any shortcomings that the bike may have. For instance, if you have to constantly keep adjusting your position on the seat or keep fiddling with the gear pedal to select the proper gear then the experience can be somewhat marred because of it. On this account, the Crux starts with no sacrifices. Most riders will find the positioning of the controls and the seating, along with the footpegs, just right. The engine, like many engines today, has been tuned with economy in mind and first-starts in the cold mornings require the choke to be on till the engine warms up; from then on the behaviour is obedience personified. Once able to sustain throttle, the engine carburets cleanly and the power delivery is delightfully free of valleys and peaks, which enhances the riding experience immeasurably.
  
The gear ratios are matched well to the way the engine builds its torque and if brisk progress is the desire, even shortchanging a bit will not display a lull before the storm, as the engine remains in active mode. On the city streets and boxed in by congested urban traffic, the Crux retains its civil demeanor allowing you to trickle it on a hint of throttle and without having to engage the lowest of gears. Out on the highway the Crux pulls strongly through the gears but does run out of revs at the top, managing to post a true top speed in the mid-80s which should serve its intended user well enough.
   
Besides being essentially academic, aiming for a higher top speed would have meant sacrificing some of the lower and mid-range grunt, not to mention fuel economy, both of which are much more important when the bike is being positioned as utility.
  
The clutch worked perfectly, except for the cable having to be adjusted once at the lever end to take up slack, which developed during the repeated harsh launches during which the front wheel constantly pawed the air, when conducting the measured tests.
  
The 'piece de resistance' in the entire setup is undoubtedly the gearshift quality. The Crux clicks through the gears so swiftly and positively, with a feel almost magnetic in quality that it almost had us believing that a pneumatic system had been incorporated. In fact the driveline is the best we have ever had on any bike during our tests. Worthy of mention here is that the rear chain didn't need adjustment throughout the test, which is not what we can say of quite a few bikes that we have tested in the past. Sadly the same cannot be said about the front brakes. At the end of almost every brake test run, we had to adjust the cable in spite of which the front stopper felt spongy and didn't bite as well as we would have liked. The rear brake on the other hand locked on applying extreme pressure, so the combination was not conducive to posting good times. In all fairness though, it must be said that under the circumstances of testing what feels inadequate may not fall too short when put to use On the Road under much less taxing conditions. Manually removing the high spots from the front brake liners and deglazing the drum did bring about a marked improvement. Having said that, the brakes do need to be improved. Besides there may always be situations On the Road when emergency would dictate proper braking Performance.
The seat in particular has been sized for rider and pillion, both of whom can park comfortably without infringing on each other's territory. The seat padding may feel a bit hard on first settling down on it but its firmness on long rides will more than pay off by holding you securely in a position that doesn't let you shift around so that you need to adjust continuously, which can be quite discomforting.
  
Typical of single-cylinder engines, a tingling vibration at the handlebar becomes prominent as the revs rise and filter down to the petrol tank. The seat though doesn't suffer too much and the footpegs remain free of noticeable shakes and shivers.
  

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