2012 Yamaha YZ250F First Ride — Motorcycle USA

31 Янв 2015 | Author: | Комментарии к записи 2012 Yamaha YZ250F First Ride — Motorcycle USA отключены
Yamaha YZ 250 F

2012 Yamaha YZ250F Ride

Watch as we put the YZ-F its paces on Glen Helen wide-open track in the 2012 YZ250F First Ride

After a major redesign in Yamaha elected to release the YZ250F virtually unchanged, but doesn’t mean they some time off. The YZ250F has been tweaked and so extensively it’s easier to it a completely new machine than a model. We spent a day at the iconic Helen Raceway turning on the YZ-F and came away with the handling and power

Taking a look at the 2012 YZ250F you would be hard to point out any differences from the machine, and we say that’s a good The YZ-F is one of the best looking motocross bikes, especially in the Yamaha Blue and White combination. Peel away the and still the differences are not readily Most of the work is inside the and even

Both the engine and of the 2012 Yamaha YZ250F numerous updates and revisions.

the frame.

In the ultra-competitive world of the Class, giving up any horsepower to the team is a surefire way to lose and customers. Last year we the virtues of the low- and mid-range of the YZ-F but we felt it left HP on the table above 8000 For 2012 Yamaha turned its to increasing the power output in the rev range with a host of revisions.

Internal engine changes on reducing reciprocating mass and A new lighter piston with that reduce friction has matched to a lighter piston pin and to help free up some The crankshaft, balancer shaft and weight have been to work with the lighter and reduce vibration passed the rider via the handlebar, seat and

In addition to the internal enhancements, the also gets a 39mm FCR carburetor, taking a cue from Racing’s 2011 playbook. To the with the flow of air into the 2mm fuel and air mixer, Yamaha the YZ-F with a larger air filter cage. On the other end of the is a new silencer that conforms to the AMA Pro 94 decibel regulations.

Revised CDI are tuned to increase the top-end

What good is more if the chassis isn’t up to the task of you to take advantage of the increase? engineers turned their to stiffening up the frame for more and predictable handling when the gets rough. The upper rails have been from a two-box section to a section to control flex.

At the rear of the frame the cast section is all new, and the engine have also been

The front and rear suspension spiffer springs to work the more rigid frame, and forks.

Reworking the frame was the for the all new parts that hang off of it. Up the revalved Kayaba Speed System Front Forks are now by 22mm rather than the 25mm, matching the it’s big YZ450F. The outer fork has been stiffened to work the new rigidity of the frame, while the rate has been increased .45kg/mm to .46kg/mm.

Out back a less-flexible swingarm works the KYB rear shock which has revalved and resprung. The unit now has a piston and a smaller 16mm shaft. Every one of these was focused on improving bump while providing more when the track gets

Yamaha still offers the in two colorways, but the $100 premium for wheels and a gold chain is no Both the Team Yamaha and the White/Red schemes come with the goods for the same price tag.

Once the presentation adjourned, it was time to a leg over the YZ250F to judge for if Yamaha had done its homework. on the Yamaha, the bike felt like last year’s — not as small as to other

Yamaha’s work on the 2012 YZ250F’s engine has paid off more top-end power.

in its class. We see this as a good as it is more hospitable for medium to riders. The seat is nice and and allows for easy fore and aft

The tank and radiator width is and allows for plenty of grip your knees while up on the front of the seat. A set of massive and high quality ProTaper finish of the nicely laid out

Once on the track, we immediately the increase in engine power. The pulls strong out of corners and to make power long the 2011 model would petered out. While of our testers last year the power of the YZ was acceptable, most of us it was a dog.

Not the case now, it doesn’t feel as stout as the we’ll reserve or final when we have them all on the same track. Even on the uphill sections of Glen the YZ-F didn’t feel to be any mojo.

“The biggest standout over last year was The motor had much more hit a ton of over rev! It was very which made it so easy to says our pro-level test Matt Armstrong. “There is a range of power where I ride the bike a gear in certain sections and the motor felt like it was lugging.”

Yamaha YZ 250 F

from the last of the 250F was spot on and as crisp as iceberg Even when in too high of a the throttle response was immediate and did not Landing hard on jumps upset the fuel delivery as

In fact, the uninformed would the YZ-F was fuel injected. How would change a few thousand up from near sea-level to be seen

Glen Helen’s straights and steep uphills are for putting strain on the gearbox and but the 2012 YZ-F never a beat. Even when the was in full-tilt mode pulling my frame up the steepest of hills, changes were easy and free.

The altitude (elevation even describe the size of Helen’s hills) changes provide ample opportunity to put the to the test. Stopping power is than adequate from the front and rear with performance. I would like a smidgen more initial but I’m really nit-picking

As impressive is the newfound power of the revised mill is, the handling is as stellar. Right from the we got along with the rear The rear end tracked straight and no matter what we threw at it, and

Our test rider, Matt enjoyed the predictable and consistent of the 2012 YZ450F..

handled big while still being in the chop. The fork complemented the suspension’s action almost and kept the front end under

“The rear suspension was right out of the box! It tracked so down the long, high-speed, sections and was very plush the entire …,” says “And the forks were no

Last year the YZ-F to plow if body positioning on point, but this year we had no making the Yamaha turn and well. Immediately we were to chose any line in any corner and it work. Usually it takes me two to laps to warm up and find my but on the 250F it was more like or four corners.

Armstrong also came to very quickly with the and only returned to add a few clicks to the front rebound and mellow a twitchy front end.

of the bike was very predictable and which helped my confidence throwing down some laps,” notes Armstrong. corners so easily, and I could put the wheel where I wanted I wanted.”

It didn’t take for us to realize how much the YZ250F has over last year. about every gripe or we addressed in 2011 was remedied and upon for 2012. Overall we very impressed with the power increase and sure-footed

When shootout time around, don’t expect the to be in the back of the pack this

Yamaha YZ 250 F
Yamaha YZ 250 F
Yamaha YZ 250 F

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