2010 YZ450F

[UJM]

The most radical machine I have seen in a long, long time.





Now, better make sure you are ready for this:



2010 Yamaha YZ450F Home, information, info

[hornet919]

it only has half an engine????

[Igneale]

I see that. The tornado pipe is weird. So is the rear slanted sleeve and backwards breathing.

The intro vid has some real cool CG.



Looks like Bubba Stewart might have an advantage if the experiments pay off.

[Bryce919er]

Originally Posted by hornet919

it only has half an engine????

Seriously though Cannandale tried the backwards intake thing. I like it in theory, makes sense, can't wait to see if they can make it work long term.

[hasbeenracer]

Originally Posted by Bryce919er

Seriously though Cannandale tried the backwards intake thing. I like it in theory, makes sense, can't wait to see if they can make it work long term.

True, but the Cannondale project had next to no R&D budget and was being rushed to market by the ego of Joe Montgomery.

Steve butler, Doug Dubach and a few other guys I know have been involved with this project from the beggining and according to what they have told me, it's the real deal.

[Bigdaa]

Fascinating. If it was an SM also, it would be even fore fascinatingly-nating.

[Sniper]

Maaaaan, that pipe is going to get hot. It's ti, but that thing will be glowing red in no time, I'm sure. If I let my 07 WR450 idle for about a minute at night, it'd be red. And Yes it was jetted corectly.

My WR450 was a beast. Imagine what a YZ going to do....

[omaha_919]

I'm not a YAMAHA guy, but that's one sexy beast


I'd hit that

[Super Sneaky Steve]

Yeah, I want the cool air hitting my exhaust side. That's why engines are what they are, but maybe liquid cooling changes things.

[cmurphy84]

the way it loops under the seat it looks like a built-in butt warmer.

[hasbeenracer]

Originally Posted by Sniper

Maaaaan, that pipe is going to get hot. It's ti, but that thing will be glowing red in no time, I'm sure. If I let my 07 WR450 idle for about a minute at night, it'd be red. And Yes it was jetted corectly.

My WR450 was a beast. Imagine what a YZ going to do....

Actually Sniper, the pipe is stainless steel but I'm sure someone will make a Ti system for it. The bike tips the scales at 245 lbs. That's kinda fat, but at least it's centralized fat!

Glowing head pipes are completely normal on 4-stroke off-roaders. Even my little CRF150F's head pipe glows...kinda scary when you see it all cherry red!

[WheelieTime]

Man that makes me want a Dirtbike. I still think I'd rather have a 2-stroke though.

[hasbeenracer]

Originally Posted by Super Sneaky Steve

Yeah, I want the cool air hitting my exhaust side. That's why engines are what they are, but maybe liquid cooling changes things.

The hotter the pipe, the better it will scavage burnt exhaust gasses = Horsepower!

Originally Posted by cmurphy84

the way it loops under the seat it looks like a built-in butt warmer.

I've seen it Chris, it's well insulated with that "ceramic stuff". (technical term)

[farmerjoe]

Sounds like a lot of Yamaha marketing hype. I'd wait to see how it does in the real world. FWIW, the YZ400f was radical and revolutionary. Not sure about this one.