Audi R8 downshift sound

[Giovaneveterano]

I'm curious: what causes the synthetic (horn-style) sound after every downshift?
Fonsecker get it spot on.

Thanks for any reply

 

[PhilS13]

The actuators performing the gear changes are likely pneumatic.

It sounds like a small electric pump that rebuilds air presssure in the system after a few shifts.

Could be wrong...just a guess

 

[RSR2KX]

That´s correct.

- Gearbox Six-speed, pneumatic activated sport gearbox with shift-paddles

http://www.raceofchampions.com/cars/audi-r8-lms/

It´s in the old one an the new one, Porsche also use it in their 991 cup cars.

 

[Giovaneveterano]

Thank you guys for the answers!

 

[Epistolarius]

Race cars with paddle shift of the last decades have had pneumatic activated gearboxes, GT, LMP, Formula, rally cars. It's the specific models (Megaline I think) used in the Audi/Porsche/Lamborghini/Bentley GT race cars where the sound of the actuator is most noticeable.

 

[Lucanus69]

It's an alarm that should warn You about racing to slow!

 

[Giovaneveterano]

Yesterday, playing with the 911 GT3 R I noticed that sound even on the Porsche. It's way less noticeable than the R8, but it's there.
Fonsecker's recordings are spectacular