And i'm trying to make a mini one first,i used a chamber fan,a spark ignitor, using a mix of butane and propane.But a can't get it ignited!!
some body plz tell me why and what's the basic things i need to make a good mini combustion cannon?thanks 
Help
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wyz2285
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Some one plz help me,I'm really new at combustion cannons.
And i'm trying to make a mini one first,i used a chamber fan,a spark ignitor, using a mix of butane and propane.But a can't get it ignited!! some body plz tell me why and what's the basic things i need to make a good mini combustion cannon?thanks
And i'm trying to make a mini one first,i used a chamber fan,a spark ignitor, using a mix of butane and propane.But a can't get it ignited!!
some body plz tell me why and what's the basic things i need to make a good mini combustion cannon?thanks -
jackssmirkingrevenge
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How are you getting fuel into your chamber? Getting the correct fuel/air ratio (around 4% in your case) is very important for reliable function, especially in smaller combustions.
You might want to consider using a syringe:
You might want to consider using a syringe:
hectmarr wrote:You have to make many weapons, because this field is long and short life
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wyz2285
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how does it works, i do like to build a fuel inject system,but don't know how 
Last edited by wyz2285 on Tue Jul 27, 2010 5:46 am, edited 1 time in total.
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jackssmirkingrevenge
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Ok, what is the volume of your chamber?
hectmarr wrote:You have to make many weapons, because this field is long and short life
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jackssmirkingrevenge
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So, grab a syringe and lighter setup like in the photo above, measure 12mL of fuel, inject it into your chamber, voila 
hectmarr wrote:You have to make many weapons, because this field is long and short life
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wyz2285
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so i have to take out the syringe for the lighter frist?than inject in to the chamber?
Last edited by wyz2285 on Tue Jul 27, 2010 6:04 am, edited 1 time in total.
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jackssmirkingrevenge
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Yes.
Don't worry about the gas leaking out of the nozzle while you do that
Don't worry about the gas leaking out of the nozzle while you do that
hectmarr wrote:You have to make many weapons, because this field is long and short life
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POLAND_SPUD
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what do you mean by
you can use manometric metering but, AFAIK, it is a bit trickier to get right than this method
??with out move the syringe
you can use manometric metering but, AFAIK, it is a bit trickier to get right than this method
Children are the future
unless we stop them now
unless we stop them now
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jackssmirkingrevenge
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You could also have a valve between the syringe and the chamber, which is closed when you fill the syringe, then open it and push in the plunger.
You'd also need a way to vent the chamber though.
You'd also need a way to vent the chamber though.
hectmarr wrote:You have to make many weapons, because this field is long and short life
