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Kawasaki Screamer

SuperMike

SuperMike

just doesn't get it
Joined
Apr 30, 2006
Location
Old Marsh Creek Springs
Moto(s)
1969 Honda CT90, 2008 KTM SuperDuke 990
Name
o_O
BARF perks
AMA #: 2815988
Anthony West tests the screamer powered Kawasaki Ninja ZX-RR at Jerez.

Yes. It does sound like an F1 car.

[youtube]bjou0zRJZBE[/youtube]
 
holy fawk i had to play that a few times over lol

is that a new engine or something?
 
m0moma said:
holy fawk i had to play that a few times over lol

is that a new engine or something?
Click to expand...


It is the "screamer" engine (evenly spaced firing order). The current engine is the "big bang" engine (firing order is very closely grouped together folllowed by a long period of "rest").

Sort of like this:

Screamer = fire, pause, fire, pause, fire, pause, fire, pause, fire, pause, etc....

Big Bang = fire, fire, fire, fire, pause, pause, pause, pause, fire, fire, fire, fire, pause, pause....etc.
 
Roadstergal said:
Guys do like screamers, I've heard.
Click to expand...

Hopkins likes it, and says it is the next milestone in Motorcycle racing.

Yamaha boss says they will never see the screamer again, and will always use a "big bang" format because of the connection between bike and rider.
 
:wow That sounded fantastic.

btw, why don't Yamaha make a "big bang" for the street then if it is so much better connection from bike to rider? Bastids:|
 
I thought 'big bang' was firing two cylinders simultaneously, making it more like a twin?
 
Med23 said:
:wow That sounded fantastic.

btw, why don't Yamaha make a "big bang" for the street then if it is so much better connection from bike to rider? Bastids:|
Click to expand...

Because saying "this is what you need (rider friendly), not what you want (big hp)" is not a great sales strategy for sport bikes.
 
HellFyre said:
I thought 'big bang' was firing two cylinders simultaneously, making it more like a twin?
Click to expand...


Thats kind of how the Ducati 990cc big bang engine worked. Its also why the big bang engines sound terrible (to me) vs. the awesome sound of a screamer.

Click here for a good article on the big bang engines.
 
Last edited:
HellFyre said:
I thought 'big bang' was firing two cylinders simultaneously, making it more like a twin?
Click to expand...

yes it does do that, meaning the amount of rest drastically offsets the power stroke.... something more like dbl fire, dbl fire, pause, pause, pause, pause. i dont think its completely necessary that 2 pistons fire at once, but its def easier to design that way.

the sceamer went out of style because riders found that tires worked better/lasted longer w/ the big-bang. now that tire tech has caught back up and we now have traction control, well prob c the screamer again.
 
Don't expect big bang on production bikes, it induces extra vibration that doesn't suit a street bike expected to last years and thousands of miles.
 
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