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Adriaan,

I imagine the reason that nobody answered your previous post is that
you are probably alone is making a big distinction between trimix and
heliox. The significant difference between trimix and heliox is
asside from the obvious difference in END is cost and the requirement
for a booster to get the required helium fill.
 

Certainly, you can go fill a bottle with heliox and go diving
without a c-card. This is in fact how many people do their first trimix
dive. However, your analogy to Indy 500 racing is incorrect. There is no
magic to trimix or heliox any more than there is to nitrox. The
primary requirement for a c-card in trimix is so that you can get fills. 
With a trimix c-card you should be able to get heliox fills from
a shop that has a booster. Since you like analogies, think of heliox
as one end of the spectrum of trimix much like 100% O2 is one end of
the spectrum of Nitrox.

-John

P.S. Any agency people that wish to quibble with my admittedly
biased opinion will please direct their comments to /dev/null.

> 
> List,
> 
> Since nobody seems willing to react or form an opinion, let me make it a
> bit simpler. Can I fill a bottle with HeliOx (or for that matter, Trimix),
> and just go diving? Without having taken any "technical diving" course?
> Wouldn't that be the same as racing the Indy 500 with just an ordinary
> driver licence and no knowledge whatsoever of racing cars?
> So let me ask once again, where can I obtain a c-card that allows me to
> dive HeliOx mixtures?( I know where to get Trimix education, so don't
> bother about that, it's the HeliOx I'm interested in). Or put in a
> different way, is there an agency out there that teaches the use of HeliOx,
> with the appropriate tables, theory etc.. BTW: Are there any Heliox or
> Trimix  tables on the net? I read in the archives that the US NAVY has some
> but I can't find them online...
> 
> 
> Regards,
> 
> Adri Haine,Belgium,Europe
> 
> 
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