post launch ventilation?

[bennettjackson]

hey, does anyone know if after combustion there is still propane in the chamber hence the need to ventilate using a fan to get knew oxygen in the chamber?[/list]

[Secret Squirrel]

With a correct mix there should be little, if any propane or oxygen left in the chamber. Both are used up in a combustion reaction to make carbon dioxide, water, and heat.

To answer your question, yes it is necessary to vent the chamber between shots to get fresh oxygen into the chamber.

[Lockednloaded]

The product is co2 and water, and both of those would hamper the combustibility of the mix you add afterwards