I wonder why they've gone for what LOOKS like a 4-2 exhaust, when all the other fours are 4-1?

Because the road bike on which it's based has a 4-2 and the rules require that to be carried through to the racer...

SB

Max Biaggi WSBK bike has two pipes as well but only belchs flames out of one

Max Biaggi WSBK bike has two pipes as well but only belchs flames out of one

Yup, the left pipe is 'supposedly' a fake

Is it a rule thing or as a marketing "road bike has two so the race bike must have two" thing?

Yup, the left pipe is 'supposedly' a fake

I heard that too but the left can was sptting flames last weekend - right one wasn't so that may be fake, using the left hand pipe to make up length as they're shorter than a 4-1??

Lathafummi - bikes have got to be silhouette of the road bikes so same no of exhausts etc.

Both cans on Biaggi's bike had lots of heat haze coming out of them at Valencia, and having seen them with the fairings off they both look real enough to me.

The reasoning on the road bike is that they couldn't get enough gas out of a single pipe and silence it legally without making the can huge so they simply put another one on...

The race bike isn't silenced the same but the gas flow requirements are more ;)

SB

Ah, I didn't realise the latest GSXR had twin pipes .... is it a true 4-2 or a 4-1-2?

Still interesting that a single end-can system works on the Hondas, even though both motors will be pumping the same amount of air (or at least within a couple of % either way)

According to the Suzuki site the WSB is a 4-2-1 system !

Exhaust System: 4-2-1

SUZUKI-RACING ::::::::::.... (http://www.suzuki-racing.com/machine_profile.aspx?SRS_ID=7)

Honda went down the fashionable underseat exhaust route and managed to get a large silencer volume instead of storage space. Yamaha and Kawasaki have twin underseat cans.

Means to an end - personally the Suzuki is growing on me lookswise, and I've always hated underseat exhausts...

SB

Not sure its actually the rules as one of the rizla bikes was only running one pipe at thruxton!
Anyone else notice?

and I've always hated underseat exhausts...

.....ah.... a man after my own heart. Stick 'em under the engine where they belong!

k7 has four into two pipes k6 has four into one the road bike has two to meet noise/emisions regs and still move enough air to perform and the super bikes have to have the same layout thats why some superbikes have a four into one ( k6) four into two (k7)

k7 has four into two pipes k6 has four into one the road bike has two to meet noise/emisions regs and still move enough air to perform and the super bikes have to have the same layout thats why some superbikes have a four into one ( k6) four into two (k7)

So one (cals) of the rizlas out at thruxton was a k6?

It must have been a K6 if it only had one exhaust. The K7 road bike has two exhausts so the race bike must also have two. WSB is a silhouette class, so that means both exhausts must be there but both don't have to be working. The teams probably have different configuration exhausts to change the engine characteristics to suit the different tracks.

The reasoning on the road bike is that they couldn't get enough gas out of a single pipe and silence it legally without making the can huge so they simply put another one on...
;)

SB

There are those that would question how the feck they got the K7 Gixxer classed as legal anyway:eek::cool:thumb:

Ah, I didn't realise the latest GSXR had twin pipes .... is it a true 4-2 or a 4-1-2?

Still interesting that a single end-can system works on the Hondas, even though both motors will be pumping the same amount of air (or at least within a couple of % either way)

Are they allowed to mess about with firing orders in W/BSB:wonder:

Therein could lie your answer:Suspiciou

.....ah.... a man after my own heart. Stick 'em under the engine where they belong!

:thumb: spoton

the twin pipes on the R1 look well, but single pipe:razz: :razz:

think they look like the bikes arsehole :lol1: :lol1: