2009 Yamaha YZF-R1 engine technology explanation

[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!!!

[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.

[AhilMohan]

@goutymaygis

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

[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

[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!

[klavernier]

a fine bike lot of power

[boglook]

gsx 1000r k9 ... i don't like ... r1 the best.... BORN FROM MOTOGP! rossy's biKE !

[livewoutlimit]

i still don't understand how this concept increases traction. anybody??

[djjaxon]

the engine produces a smother torque curve which gives more control to the rider

[V8JOHNNY]

a crossplane crank firing order creates a pulse of power per crank revolution, kind of like a big bang engine but a little softer. the theory is that the tyre polimers have that extra micro second to re-adhere to the track allowing for greater traction. V-twins are a natural big bang engine and are renound for their traction out of a corner

[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.

[boxer3main]

insanity.

[fshaia]

The crossplane design was first proposed in 1915, and developed by Cadillac and Peerless, both of whom produced flatplane V8s before introducing the crossplane design. Cadillac introduced the first crossplane in 1923, with Peerless following in 1924.

[Nicu88D]

this is greater than the introduction of ABS on bikes, but to bad no1 thought of it in the golden age of bike 1990-2004 (it's just my opinion) cause it's a rather simple manufacturing engine change

[eworque]

This technology is only achieved with help from computer to control the uneven firing. In the past years the computer might be too big to fit to the bike.

[wd5g3j8]

well we don't need two strokes anymore? that crossplane crackshaft is a brilliant piece of engneering, that means this bike behaves just like a two-stroke going in to a corner, theres not has much engine breaking & that snap power band coming out of the corner, thankyou yamaha.

[schranzcro]

It's better and faster, than ZX-10R, GSX-R1000 and CBR1000RR 2009!

[randommagnum]

Sounds just like a V8...

With a crossplane crank of course, and that's almost all of them. I guess the unevenness of having just one bank of that said V8 is outweighed by the torque advantage described.

Let's start putting crosscranks in cars, so these little rice burners can finally sound dignified!

[eworque]

crossplane cranks have been used in V8 for many decades but mostly in large displacement and low revving engines with high torque. Performance and racing engines use flatplanes to achieve high engine rev which means more power.

[randommagnum]

Sounds just like a V8...with a crossplane crank of course, which is all of them that I've seen except for a few European cars with a flat-crank V8, and those cars sound much like the typical flat-crank inline-4.

A crossplane V8 has an uneven firing order within each bank, but because of the complementary timing of the two banks, it's even overall. So, is the unevenness of the firing order in a 4-banger like this outweighed by the torque advantages? According to this, the answer is yes.

[adrianrubi]

is this better than the new gsxr1000 suzuki?

[05EVORS]

All the Automotive OEM's need to take notice with this for road cars IE; Honda, Mitsu....Honda should have adopted this a decade+ ago to compliment vtec up on top. I wanna see this motor with the right turbo since its so linear

[Uncle5cary]

They aren't talking about traction just throttle control. Angular momentum=angular velocity*inertia.

At mid-stoke when the con-rod is at 90 degree angle to the crank, rotational inertia is high. At tdc and bdc, the weight of the piston and connecting rod disappears and angular velocity must increase. It is a linear relation; not exponential as shown on the graph.

[Julius314159]

There is no way that you can look at the graph presented, and conclude that it is exponential. It could be a piecewise defined quadratic, hyperbolic or elliptical.

[vrsixer]

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

[ausirider91]

its just the same principle as 90 degree v twin cylinder

[Ranger0n20s]

wow thats just brillant... awesome work!

[999miki]

This desing of crankshaft is really good for traction. You can see it on MX bikes. 250cc 2T vs 450 4T. Four-stroke engine give ONE BANG in two revs, two-stroke ONE BANG in one rev, so in two revs TWO BANGS. Some people think that 2T engines dont have enough torque, in fact, their are just lacking traction. Honda something similar did back in 90s with 4 cilinder 2T 500cc. All cilinders fired in half rev.

[AddingMyVoice]

forestR1 &rjereza => "Big bang giving the tyre a rest? it won't know the difference! "

I'm no expert but I'm smart enough to own an R1 and a 1098S and lucky enough to have a PhD in Physics. At 100km/hr and your 400 firings/second the tire travels 6.9cm between firings. That's about the size of a tire contact patch. Mind, the torque impulse spacing of the new R1 is still close to that of a high reving 4 cyl engine. But the new R1 might give the initial kick of 1098 +R1 top end!!!!!

[corotor12345]

did you take into consideration the front and rear sprockets? the engine initial geardown and the secondary after the clutch? did you take into account the gear you are at to be going at 62 mph? if you did then you're prolly right, if you didnt then your PhD is worth nothing here and now...

[colsley]

Awesome video! Love the music and the technology.

[forestR1]

At say 12,000 RPM the engine is turning over 200 times PER SECOND and firing 400 times PER SECOND, Big bang giving the tyre a rest? it won't know the difference! Yamaha had to ditch the 20 valve layout because of enviro-nazis, i think this is just to make 'em different again. It works for me! sounds good too.

[idroppedit]

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

[riflemanjim]

The advantage to the v twin big bang engines is that there is a break in power pulses to the tire instead of getting a pulse every 90 degrees you get one about 180 degrees gives the tire time to grip so you can exit the corner easier.entrance and corner speed are more controlled by tire and chiasis balance.

[polymer9mm]

awesome vid

[Meyo99]

I can't stand that annoying inline 4 wail, so when I heard the Honda VFR 800 rumble, I had to have one! Now I want something faster, but it HAS to be different than the norm. I can't afford the Italian V4s, Honda wont give us the V5, but shit... Yamaha has come to save the day! I could listen to this bike ALL FUCKING DAY and ride even crazier in the twists! Thank god I didn't buy a used and over-priced Honda RC51 SP2 this summer!!

[chichipukaka]

I have a question...since the firing order is'nt distributed in equal time intrvals, wont there be induced stresses in the crank shaft?

[mushrume]

good thought???? but they must have it worked out .

[anothercbrowner]

cant wait to hear opinions about it after someone actually test drives it

[uwb381]

it sounds like a V4 engine

[narcossatanicos]

Sounds like SHIIIIT!!!

[gixxer450]

i want one.

[poliking55555]

how much horse power

[Semisad]

Something about 189hp

[r1willyc]

180

[Semisad]

182

[onlyplaytabs]

Sex.

[maigj]

Awesome video... these japanese guys are really creative...

[itsmpt]

I wonder if the engine has balance issues.

[JeffroGymnast]

as for balance, i dont think it will be any less balanced than before. inline 4's vibrate like hell no matter how you crank em. my only question is: why did it take so long for them to implement this? an overlapping power stroke is so obvious. hence the use of inline 6's and flat 6's by porsche and bmw over the v6. anyone care to explain?

[Robb235]

I pretty much have the same question. Why hasn't this been in production sooner?

[chichipukaka]

With due respect to your views..there is no overlapping Pwr strk...the closest being at an interval of 90 deg.

[jtomos]

Inline four vibrates as hell? ROFL

Have you riden an MT yet?

[Tr1ppins]

this commercial really wants me to buy a new drumset

[revvhard]

nice!

[w621w]

这中发动机有什么好处？没听懂啊

[m0t0fr3ak]

this commercial really wants me to buy this monster!