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Help for propane injection

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
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Unread postAuthor: CannonBall » Sun Apr 08, 2007 6:18 am

New problem has occured.
My butane has different presures at different temperatures.
Its not easy to get the right ratio.

But i cant find propane PURE.

Cheers
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CannonBall
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Unread postAuthor: CannonBall » Sun Apr 15, 2007 4:26 pm

I have made a new gas meter my other one was rather leaky.
And my gas presure was a little to low for my other meter setup.
I made some calculations.
Plzz reply if my calculations are wrong.
Chamber volume = 2242
Meter Volume = 106.4
Fuelratio = 3.53333
Volume of gas needed = 79ml
Calculated meter presure = 0.74 Bar = 11psi

Are my calculations correct?

Patrick 8)
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CannonBall
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