[s-cars] Toluene, Race Gas, Water Injection, etc

[Theodore Chen]

the idea is to spray a mist that cools the air, rather than spraying
large water droplets.  this means the nozzles have to atomize the water
pretty well.

if you tried to cool brake rotors by spraying large water droplets
at them, they'd bounce right off the rotor, each droplet packaged in
its own little ball of steam.  you'd be leaving a lot of water on the
track, and the stewards would get mad at you.

i don't know about race _cars_ using them, but in europe, people
actually race semi-tractors.  they use water cooling for the brakes.
if you watch a race, you'll see them blasting huge clouds of steam
as they brake for corners.

here's a link in french (english version also available for us
french-challenged listers): http://aravi.free.fr/index_fr.htm

another link: http://www.gtrc.de/frameSet.htm

people will race anything.  ever see swamp buggy racing?

-teddy

--- Frederic L'Huillier <flhuillier at siebel.com> wrote:
> I thought mist the brake rotors will actually brake them because of the
> difference of temperature between hot rotor and cold water. I don't recall
> any race car using a such system.
> Can anyone confirm ?
>
> Regards,
> Frederic
>
>
> -----Original Message-----
> From: Bruce Mendel [mailto:brucem105 at comcast.net]
> Sent: Sunday, November 03, 2002 9:13 PM
> To: S4audinut at aol.com; charlie at elektro.cmhnet.org; HoosierMP at aol.com
> Cc: s-car-list at audifans.com
> Subject: Re: [s-cars] Toluene, Race Gas, Water Injection, etc
>
>
> I looked at the intelligent auto spray, and the spray triggers were well
> designed, and all in all it was a nice system.
>
> However, the intake temp reductions were exponentially greater with water
> injection aft of the intercooler as compared to spraying on the intercooler.
> It was more money, but seemed to me at least to be a better performance
> tradeoff.
>
> The toluene spray idea is pretty much what you get with a good Aquamist
> atomizing nozzle and using 50% methanol in the water injection.
>
> I'm also considering hooking up two extra nozzles to mist the brake rotors
> for summer track events (not using methanol of course!).
>
> Bruce
> ----- Original Message -----
> From: <S4audinut at aol.com>
> To: <charlie at elektro.cmhnet.org>; <HoosierMP at aol.com>
> Cc: <s-car-list at audifans.com>
> Sent: Sunday, November 03, 2002 2:53 PM
> Subject: Re: [s-cars] Toluene, Race Gas, Water Injection, etc
>
>
> > --
> > [ Picked text/plain from multipart/alternative ]
> > In a message dated 11/03/2002 2:16:53 PM Eastern Standard Time,
> > charlie at elektro.cmhnet.org writes:
> >
> > > I suggest you look at the Labtronics Intelligent Intercooler Water
> Spray:
> > >   http://www.elektro.com/~audi/labtronics/
> > >
> > > It's a very well done unit that monitors ambient temperature and
> > > intercooler temperature on the BACK of the intercooler, and knows
> > > when you've got a load on the engine by watching the duty cycle
> > > of an injector.  Both load and temperature sensitivity are adjustable
> > > so it can figure when to close a relay controlling a water spray pump.
> > > This really helps conserve whatever fluid you are using.
> > >
> > > It seems to me it was about $100 US by the time it was shipped here.
> > >
> > >   - Charlie
> > >
> > >
> > >  Charlie Smith   charlie at elektro.cmhnet.org  614
> >
> > We could be onto a real perf. gainer here, Toluene injection, think about
> it!
> > Rod
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