2009 Yamaha YZF-R1 engine technology explanation

Yamaha introduces a new engine with the introduction of the 2009 Yamaha YZF-R1.This is the first production bike using inline 4 - crossplane crankshaft engine technology.
http://www.yamaha-motor-europe.com/products/motorcycles/supersport/yzf_r1.jsp...

Category:

Autos & Vehicles

Tags:

• 2009
• yzf-r1
• super
• sport
• Yamaha
• engine
• art
• of
• engineering
• technology
• inline
• four
• crossplane
• crankshaft
• explanation

[vrsixer]

nice design but surprised they didn't come up with this earlier it's common sense, much smother bowerband and more control

[idroppedit]

ummm there's the bike called the M1... won a few championships with it... it works... trust me!

[bassistmatt]

the crossplane doesn't develop more peak torque than the flatplane as when all 4 pistons are stopped at tdc/bdc in a flatplane gives the torque due to the slight acceleration of the crank. what the crossplane does is allow the engine to rev up faster. a flatplane fires "bang - bang - bang - bang -" 0-180-360-540-720, crossplane fires "bang - - bang - bangbang-" 0-270-450-540-720. there is a 90deg overlap and a 270deg gap along with two 180 degree strokes through the 720deg firing cycle.

[MrRon4444]

but all de motogp bikes use cross plane crank.....yamaha was de 1st 2 bring it 2 de market!!!

[AhilMohan]

@goutymaygis

It doesnt sound anything like a V-twin. More like a V-Four if anything. The latter using similar firing pattern.

[ausirider91]

its just the same principle as 90 degree v twin cylinder

[goutymaygis]

Does the 09 and 10' R1's get their vtwin sound from the newly designed crank shaft? I love the sound, just need some explanation as to why is sounds like this now:) I love it none the less. So much meaner sounding.

[xdux]

love the drums and bike combo. yamaha makes sick drums too! just ask dave weckl.

[xerox2405]

es todo una belleza pero el sonido es muy feo es mejor la del 2007

[carbonhornet]

@livewoutlimit the crankshaft carries constant speed and does not slow down due to tdc or bdc. therefore you get power at all parts of rotation and the wheel gets smooth power delivery to the wheel. its like a vtwin but in an inline format.

[Gan805]

brilliant

[shootphotosnotarabs]

someone send this link to suzuki, i can now blame my crash completly on bad crank construction. that is now my excuse!