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?view=video
Duration : 0:5:57
[youtube UvTXMtTTKQw]
brilliant
brilliant
someone send this …
someone send this link to suzuki, i can now blame my crash completly on bad crank construction. that is now my excuse!
a crossplane crank …
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
crossplane cranks …
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.
This technology is …
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.
a fine bike lot of …
a fine bike lot of power
gsx 1000r k9 … i …
gsx 1000r k9 … i don’t like … r1 the best…. BORN FROM MOTOGP! rossy’s biKE !
the engine produces …
the engine produces a smother torque curve which gives more control to the rider
i still don’t …
i still don’t understand how this concept increases traction. anybody??
insanity.
insanity.
The crossplane …
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.
this is greater …
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
well we don’t need …
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.
It’s better and …
It’s better and faster, than ZX-10R, GSX-R1000 and CBR1000RR 2009!
Sounds just like a …
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!
Sounds just like a …
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.
is this better than …
is this better than the new gsxr1000 suzuki?
All the Automotive …
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
There is no way …
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.
They aren’t talking …
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.
did you take into …
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…
nice design but …
nice design but surprised they didn’t come up with this earlier it’s common sense, much smother bowerband and more control
wow thats just …
wow thats just brillant… awesome work!
This desing of …
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.
forestR1 &rjereza = …
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!!!!!