I was just wondering if anyone knew whatever happened to the screamer engine kawasaki was supposed to implement in their GP bikes? I remember hearing about it last year, but i never followed up on the development of it. I sure would have loved to hear that thing go around either Laguna Seca or Indiannapolis.
Joined Jun 2006
2K Posts | 20+
south wales UK
<div class='quotetop'>QUOTE (Bisquit @ Feb 27 2009, 08:38 PM) <{POST_SNAPBACK}><div class='quotemain'>I was just wondering if anyone knew whatever happened to the screamer engine kawasaki was supposed to implement in their GP bikes? I remember hearing about it last year, but i never followed up on the development of it. I sure would have loved to hear that thing go around either Laguna Seca or Indiannapolis.
Hey welcome to the forum...
the screamer did sound awesome but i think i read somewhere that kwak needed to extract more power from the new motor? i maybe wrong?
i wouldnt be suprised if they secretly develop this new engine and comeback to motogp in 2010/11
they are saving a huge amount of money by pulling out... maybe some of the funds will go into developing the engine for the future who knows.
Hey welcome to the forum...
the screamer did sound awesome but i think i read somewhere that kwak needed to extract more power from the new motor? i maybe wrong?
i wouldnt be suprised if they secretly develop this new engine and comeback to motogp in 2010/11
they are saving a huge amount of money by pulling out... maybe some of the funds will go into developing the engine for the future who knows.
Joined Dec 2008
333 Posts | 0+
Lienden
<div class='quotetop'>QUOTE (jazkat @ Feb 27 2009, 10:53 PM) <{POST_SNAPBACK}><div class='quotemain'>Hey welcome to the forum...
the screamer did sound awesome but i think i read somewhere that kwak needed to extract more power from the new motor? i maybe wrong?
i wouldnt be suprised if they secretly develop this new engine and comeback to motogp in 2010/11
they are saving a huge amount of money by pulling out... maybe some of the funds will go into developing the engine for the future who knows.
melandri IS testing a new engine...
the screamer did sound awesome but i think i read somewhere that kwak needed to extract more power from the new motor? i maybe wrong?
i wouldnt be suprised if they secretly develop this new engine and comeback to motogp in 2010/11
they are saving a huge amount of money by pulling out... maybe some of the funds will go into developing the engine for the future who knows.
melandri IS testing a new engine...
Joined Jun 2006
2K Posts | 20+
south wales UK
<div class='quotetop'>QUOTE (Slide @ Mar 1 2009, 11:29 PM) <{POST_SNAPBACK}><div class='quotemain'>melandri IS testing a new engine...
yes but we are talking about kwaks screamer engine not the current motor.. i dont think thats what melandri is testing at qatar
yes but we are talking about kwaks screamer engine not the current motor.. i dont think thats what melandri is testing at qatar
Joined Dec 2008
333 Posts | 0+
Lienden
<div class='quotetop'>QUOTE (jazkat @ Mar 2 2009, 03:51 AM) <{POST_SNAPBACK}><div class='quotemain'>yes but we are talking about kwaks screamer engine not the current motor.. i dont think thats what melandri is testing at qatar
well, they were talking about "an all new engine and chassis"...
well, they were talking about "an all new engine and chassis"...
A screamer inline 4 is not going to win anything. I am surprised by what has been learned about the benefits of odd firing orders that they wasted any money on it at all.
Joined Dec 2008
333 Posts | 0+
Lienden
<div class='quotetop'>QUOTE (gsfan @ Mar 3 2009, 04:29 AM) <{POST_SNAPBACK}><div class='quotemain'>A screamer inline 4 is not going to win anything. I am surprised by what has been learned about the benefits of odd firing orders that they wasted any money on it at all.
the yamaha's have an irregular firing order...
the yamaha's have an irregular firing order...
<div class='quotetop'>QUOTE (Mick D @ Mar 3 2009, 01:11 PM) <{POST_SNAPBACK}><div class='quotemain'>Yup, GS - Slide's right. Works so good on the M1 they filtered it down to the R1 and Spies sure seemed happy that Yamaha "wasted their money" on that useless technology...
IMO thats what gsfan said, its just theres some punctuation missing from his post. he means that he cant see why kwak wasted money on a screamer when the big bang engine is such a proven concept....
IMO thats what gsfan said, its just theres some punctuation missing from his post. he means that he cant see why kwak wasted money on a screamer when the big bang engine is such a proven concept....
Joined Jun 2007
10K Posts | 1K+
Norah Head
<div class='quotetop'>QUOTE (BigAl @ Mar 4 2009, 02:10 AM) <{POST_SNAPBACK}><div class='quotemain'>IMO thats what gsfan said, its just theres some punctuation missing from his post. he means that he cant see why kwak wasted money on a screamer when the big bang engine is such a proven concept....
I think if we look back it was all brought out again when everyone was trying to find out why the Ducati was cleaning up ... ie. 07. And Stoner runs screamer config ..... well as screamer as a 90deg. V4 can get.
Kawasaki, knowing that there general power was down, probably thought they could get more power by going screamer config. then work on the controllability problems with the electronics.
I think if we look back it was all brought out again when everyone was trying to find out why the Ducati was cleaning up ... ie. 07. And Stoner runs screamer config ..... well as screamer as a 90deg. V4 can get.
Kawasaki, knowing that there general power was down, probably thought they could get more power by going screamer config. then work on the controllability problems with the electronics.
i read in an article a little while back from the kwak boss that the problem with the screamer engine is that it takes a lot of high rpm revving to make power and when the bike is at 15,000 to 19,000 rpm the motor is so loud that the rider cannot listen to what the bike or rear tire is doing hence the fact that they cant get a feel for the bike with the screamers. He said that he will NOT use the screamer engine.
Maybe my fault for not being clear but BigAl is right. A V configuration is a big bang motor. My SV is a big bang motor. The odd firing order of the Yamaha is perfect.
<div class='quotetop'>QUOTE (gsfan @ Mar 3 2009, 06:58 PM) <{POST_SNAPBACK}><div class='quotemain'>Maybe my fault for not being clear but BigAl is right. A V configuration is a big bang motor. My SV is a big bang motor. The odd firing order of the Yamaha is perfect.
A big bang engine fire all four cylinders within 90 deg of the 720 deg 4 stroke sysklus.
Your SV is a V-twin noting less nothing more. It has a min of 270 deg between each fire pulse.
Yamaha does not conider their engine to be a big bang engine, but "Cross plane" or something they call it. While it has an iregular fiering order they spred it out more than a traditional big bang engine. That's true for both the M1 and R1.
A big bang engine fire all four cylinders within 90 deg of the 720 deg 4 stroke sysklus.
Your SV is a V-twin noting less nothing more. It has a min of 270 deg between each fire pulse.
Yamaha does not conider their engine to be a big bang engine, but "Cross plane" or something they call it. While it has an iregular fiering order they spred it out more than a traditional big bang engine. That's true for both the M1 and R1.
90 degree Vtwins have a natural odd firing order (however slight) is what I mean whereas the inline four does not unless made that way. Making them odd cancels out the internal inertia forces (substantial to the point of equal to the engines output at high rpm according to Yamaha) which makes for a better high revving engine. By extension, the Ducati wouldn't have to be set up with an odd firing order as it would have it inherent in the design. This is why I believe the V configuration is so good. It has the best configuration naturally. Yamaha has found the workaround though (and bonused on the short wheelbase handling) and they have a fantastic motor although I still prefer the V.
Ignoring sumultaneous firing, V-Twins can only have 2 firing orders (front/back, back/front)
A V-4 is quite different. It can alter timing of front/back, AND right left.
IT DOES NOT have to be a big bang (front 2/rear 2), and rarely is
A V-4 is quite different. It can alter timing of front/back, AND right left.
IT DOES NOT have to be a big bang (front 2/rear 2), and rarely is
<div class='quotetop'>QUOTE (clarkjw @ Mar 5 2009, 07:21 PM) <{POST_SNAPBACK}><div class='quotemain'>Ignoring sumultaneous firing, V-Twins can only have 2 firing orders (front/back, back/front)
A V-4 is quite different. It can alter timing of front/back, AND right left.
IT DOES NOT have to be a big bang (front 2/rear 2), and rarely is
Ducati made a "big bang" V4 when they introduced the GP bike but thru it away almost at once.
It sounded just like the V-twin, I was there first time it went public at Valencia. Now they are obvioulsy using a "screamer" configuration. Anyone doubting that has never really hard them.
A V-4 is quite different. It can alter timing of front/back, AND right left.
IT DOES NOT have to be a big bang (front 2/rear 2), and rarely is
Ducati made a "big bang" V4 when they introduced the GP bike but thru it away almost at once.
It sounded just like the V-twin, I was there first time it went public at Valencia. Now they are obvioulsy using a "screamer" configuration. Anyone doubting that has never really hard them.
I've heard that no one uses screamer engines in MotoGP any more,and not big bang either.
That they have found something in between.Even if the straight 4:s of Yamaha and Kawasaki are more different.And Ducati,Suzuki and Honda has more of an even firing order(you just have to listen to them).I would guess Kawasaki came to the same conclution as the others ,that a screamer isn't the most effective.For traction or vibrations or poweroutput i don't know.
This is from the Swedish commentator on Eurosport.I don't know who he talked to though.
That they have found something in between.Even if the straight 4:s of Yamaha and Kawasaki are more different.And Ducati,Suzuki and Honda has more of an even firing order(you just have to listen to them).I would guess Kawasaki came to the same conclution as the others ,that a screamer isn't the most effective.For traction or vibrations or poweroutput i don't know.
This is from the Swedish commentator on Eurosport.I don't know who he talked to though.
Joined Jun 2006
2K Posts | 20+
south wales UK
<div class='quotetop'>QUOTE (Anders GUZZI @ Mar 5 2009, 09:35 PM) <{POST_SNAPBACK}><div class='quotemain'>I've heard that no one uses screamer engines in MotoGP any more,and not big bang either.
That they have found something in between.Even if the straight 4:s of Yamaha and Kawasaki are more different.And Ducati,Suzuki and Honda has more of an even firing order(you just have to listen to them).I would guess Kawasaki came to the same conclution as the others ,that a screamer isn't the most effective.For traction or vibrations or poweroutput i don't know.
This is from the Swedish commentator on Eurosport.I don't know who he talked to though.
this was 07 so i guess 08/09 still uses the same firing order
Firing up the GP7 on the rollers produced a glorious sound from the twin 2-into-1 exhausts. The "screamer"-firing-order engine used this year has allowed Ducati to revert to these, in contrast to the four separate megaphones required by the old "Twin Pulse" 990. The lumpy, offbeat, 3000-rpm idle speed is deliberately set high to help offset engine braking when you close the ride-by-wire throttle entering a turn.
the Ducati accelerates very hard from around 11,000 rpm onwards. There's a meaty spread of midrange power as it builds furiously toward the 19,000-rpm rev limiter dialed in for this press test (20,000-plus rpm in race guise has been rumored).
That they have found something in between.Even if the straight 4:s of Yamaha and Kawasaki are more different.And Ducati,Suzuki and Honda has more of an even firing order(you just have to listen to them).I would guess Kawasaki came to the same conclution as the others ,that a screamer isn't the most effective.For traction or vibrations or poweroutput i don't know.
This is from the Swedish commentator on Eurosport.I don't know who he talked to though.
this was 07 so i guess 08/09 still uses the same firing order
Firing up the GP7 on the rollers produced a glorious sound from the twin 2-into-1 exhausts. The "screamer"-firing-order engine used this year has allowed Ducati to revert to these, in contrast to the four separate megaphones required by the old "Twin Pulse" 990. The lumpy, offbeat, 3000-rpm idle speed is deliberately set high to help offset engine braking when you close the ride-by-wire throttle entering a turn.
the Ducati accelerates very hard from around 11,000 rpm onwards. There's a meaty spread of midrange power as it builds furiously toward the 19,000-rpm rev limiter dialed in for this press test (20,000-plus rpm in race guise has been rumored).
Similar threads
