60-30-10 vs 70-20-10

[Ubehage]

I have heard some people mention that these compositions perform about the same in core-burners.

Does any of you know if that is true, and what are your arguments for using one over the other?

[dagabu]

In my experience, the two are very from each other. 70:20:10 (74:14:12) is very close to the stoichiometric ratio while 60:30:10 is starved for O2.

[Arthur]

Sometimes people chose odd formulae to manipulate the output gasses. I've read opinion that under oxidised mixes are better because the hot CO flows faster through the nozzle than the bigger molecule CO₂ . _whether I agree ...