Carbon fibre ram air ducts.

Ram air dont help until you are well above 100mph. Even then I cant see it making that much difference! Only real benefit is clean cool air from front of bike... but then it will eat a lot of flies. My air box had a nice collection :'(

[Stu]

Originally Posted by Mej

Some info on how ram air works.

http://www.sportrider.com/tech/146_9910_ram/index.html

http://www.sportrider.com/tech/146_9912_ram/index.html

most interesting graph is http://www.sportrider.com/tech/146_9.../photo_12.html
i.e. a non ram air bike suffering negative pressure in the airbox as the engine sucks in air faster than it can be replaced, compared to a slightly positive air pressure in the air box of ram air bikes from about 85 mph (easily achievable by an SV )

A the end of the day Suzuki spent money researching air flow on their bikes for a reason.

[Stu]

Originally Posted by suzsv650

A the end of the day Suzuki spent money researching air flow on their bikes for a reason.

But everything they come up with is a compromise surely?
They have to compromise for cost and asthetics and not achieve the perfect solution.

[yorkie_chris]

Originally Posted by ThEGr33k

Ram air dont help until you are well above 100mph. Even then I cant see it making that much difference! Only real benefit is clean cool air from front of bike... but then it will eat a lot of flies. My air box had a nice collection :'(

Best I saw was a 600K2 which had eaten a blackbird flat out... straight down the ram air tube, most of it splattered against the back of the airbox with a load of guts and feathers stuck to the air filter mesh!

Originally Posted by suzsv650

A the end of the day Suzuki spent money researching air flow on their bikes for a reason.

They didn't on the SV. They went for the simplest possible solution to the nosie regs which is to put a massively restrictive snorkel in the intake.

[yorkie_chris]

Originally Posted by Stu

most interesting graph is http://www.sportrider.com/tech/146_9.../photo_12.html
i.e. a non ram air bike suffering negative pressure in the airbox as the engine sucks in air faster than it can be replaced, compared to a slightly positive air pressure in the air box of ram air bikes from about 85 mph (easily achievable by an SV )

Not that valid to SV though, IMO.

For that money you are fitting flatslide carbs which do not use airbox, so the "airbox pressure" then is the stagnation pressure WRT the bike.
Fair enough behind fairing/rad/whatever lump is in flow... you will have region of reduced pressure. BUT nowhere near the reduction of highly strangled stock filter as well as the structural issue.

Look at figures they get, h*nda @ 28mb. ZRX low at -27mb. As I see it that's the honda with bigger scoops than the cylinder head demands flow, and the ZRX with a poor airbox design. And still c5% difference if that depending on atmospheric pressure between tests.

Originally Posted by yorkie_chris

Best I saw was a 600K2 which had eaten a blackbird flat out... straight down the ram air tube, most of it splattered against the back of the airbox with a load of guts and feathers stuck to the air filter mesh!

Yum yum

[fastdruid]

See, there is and advantage to ram air, I heard once about an RGV250 rider who hit a pigeon, went straight through the fairing and knocked him off! I'd prefer the ram air to take a munch!

Druid

[yorkie_chris]

Originally Posted by ThEGr33k

Yum yum

You would not believe it mate, amazing sight... the mesh thing on the ram tube was stuck to the poor thing in the air box, but in process it had shredded most of the bird. Amazing how much kinetic energy there is in 150mph

Originally Posted by yorkie_chris

Best I saw was a 600K2 which had eaten a blackbird flat out... straight down the ram air tube, most of it splattered against the back of the airbox with a load of guts and feathers stuck to the air filter mesh!

nice lol

and looking at the space there is, theres no way i could feed a big enough tube from the air box to the front of the bike

so will just make some 17mm tank risers

but still would be intresting to see a sv with it vs without it