Difference between revisions of "Aerosol"
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| − | Aerosol propellants come in cans, you can buy them at wal*mart, and they do not need any auxillary hardware (like a [[fuel meter]]) to use. As such, they are quite popular. | + | '''Aerosol''' propellants come in cans, you can buy them at wal*mart, and they do not need any auxillary hardware (like a [[fuel meter]]) to use. As such, they are quite popular. |
| − | It is recommended that you avoid using hairspray, as it will gum up your chamber. Deoderant is much better - | + | It is recommended that you avoid using hairspray, as it will gum up your chamber. Deoderant is much better - "Right Guard" in the brown can was the generaly recommended one until recently, when the formula was changed to use a non-combustible propellant. Any spray with flammable propellants will work, look for things like [[propane]], [[butane]], isobutane and/or [[starter fluid|ether]]). |
Because the amount of fuel cannot be measured accurately (the usual procedure is timing the spray duration by feel), it does not yield the performance that [[fuel meter|metered propane]] does - the pressure generated during a [[closed chamber]] firing is estimated to about 30-40 [[psi]], as compared to 40-50. | Because the amount of fuel cannot be measured accurately (the usual procedure is timing the spray duration by feel), it does not yield the performance that [[fuel meter|metered propane]] does - the pressure generated during a [[closed chamber]] firing is estimated to about 30-40 [[psi]], as compared to 40-50. | ||
| − | If your cannon is not firing, or is firing weakly and you have a | + | If your cannon is not firing, or is firing weakly and you have a flammable fuel (verified by spraying over a flame): check the [[ignition source]]. If you are getting a spark, you are most likely spraying too much fuel in; play around with how much you spray in until you get a good bang. And always remember to [[venting|vent]] your chamber between shots. |
[[category:fuels]] | [[category:fuels]] | ||
Revision as of 16:30, 15 March 2006
Aerosol propellants come in cans, you can buy them at wal*mart, and they do not need any auxillary hardware (like a fuel meter) to use. As such, they are quite popular.
It is recommended that you avoid using hairspray, as it will gum up your chamber. Deoderant is much better - "Right Guard" in the brown can was the generaly recommended one until recently, when the formula was changed to use a non-combustible propellant. Any spray with flammable propellants will work, look for things like propane, butane, isobutane and/or ether).
Because the amount of fuel cannot be measured accurately (the usual procedure is timing the spray duration by feel), it does not yield the performance that metered propane does - the pressure generated during a closed chamber firing is estimated to about 30-40 psi, as compared to 40-50. If your cannon is not firing, or is firing weakly and you have a flammable fuel (verified by spraying over a flame): check the ignition source. If you are getting a spark, you are most likely spraying too much fuel in; play around with how much you spray in until you get a good bang. And always remember to vent your chamber between shots.
