F1, trickle-down, etc.

[Kurt Heintz]

> >
> >The valvessprings are pneumatic springs!

http://www.fia.com/regle/REG_TEC/F1/F1-technique-2001-a.pdf

Pneumatic is nowadays standard.
Renault used it first at the V-6 Turbo.

Kurt

> 
> Yep - Renault has used this system in the past (I don't remember if it's
> still legal in F1), and Ducati was rumored to be working on it for their
> next-gen Superbike.  Basically, the tappet traps a pocket of air underneath
> it, and that's the valvespring.  Of course, you need to make sure you've got
> a source of compressed air to keep the valves closed upon start-up, and
> that's where Ducati was running into problems.  Loose your air supply, and
> the valves all drop - that's probably going to result in a warranty return;)
> 
> Eric Bryant                      Grand Haven, MI
> mailto:eric at bryantperformance.com
> www.bryantperformance.com
> 
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