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Hyrbid C:B ratiosOhhk,well for a usual comebustion the optimal C:B is 1.5:1 so what is the best C:B ratio for a hybrid on say a 2x mix does that mean the barrel ratio should be doubled?And doubles for every x mix after that for the optimal use of the power produced by the hybrid?
Hybrids are generally going to be using metered propane. This means that the optimal c:b ration is .6.8:1, not 1.5:1. I would assume that you are correct and you would want about a .4:1 ratio for a 2x mix.
Controlled insanity = Genius
Life flies when you're being dumb.
so how much more powerful is a hybrid to a wellbuilt pnuematic? ive never seen a hybrid in person.
guess it depends on the mix and chamber size. normal combustions produce about 60 psi with the right fuel mixture right? so a 2x hybrid would create 120psi, 3x, 180 and so on. at least that seems like the way it should work.
EDIT: oh and i forgot to add that hybrids should have a faster flow than most pneumatics too.
Pressure increases are going to be a ratio by absolute pressure, not gauge;
I belive that a 2x mix, close chamber, produces about 115 psig (measured), or 130 psia (relitive to vacume). So a 1x mix produces 65psia, or 50 psig, and a 3x produces 195 psia or 180 psig. However, the 'optimal' ratio for a hybrid is contested. See the thread on spudtech for tecnical details. Not that it matters too much. The 'optimal' barrel on a hybrid would vary by the mix used, and would probably be too long to be practical anyways. Unless you want to make a quiet hybrid. It wouldn't be too hard to figure out the (approximate) optimal barrelchamber ratio, however. A binary toohigh toolow search utilizing different mixes could find it extreamly fast, declaring the mix too high if it is loud, and too low if it is quiet... The optimal mix for a certain barrel could probably be detirmined to within a few percent using less than a dozen shots.
 
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