Well this is my very first combustion in all my experience with Spudguns, it took a bit over an hour to complete and just seems quite ghetto with all the tape and whatnot. It will definately be my last combustion.
The bore is actually closer to 68mm than 75mm.
The shots were in order of Crap - Best.
[youtube][/youtube]
Part Ghetto First Combustion 75mm Mortar
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potatoflinger
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That isn't a bad looking gun, but as you said the performance wasn't too great, although the shots were getting progressively better, so I guess you were getting better at measuring the fuel.
Unless you go all out and build an advanced combustion, the performance of a combustion gun won't really be too amazing.
Unless you go all out and build an advanced combustion, the performance of a combustion gun won't really be too amazing.
It's hard to soar with eagles when you're working with turkeys.
It doesn't look that bad 
. I don't now if it's possible but when you don't have a bigger chamber the barrel I would use a powerful fuel like hydrogen 
. I'm not sure the PVC will hold that amount of pressure 
Tom
. I don't now if it's possible but when you don't have a bigger chamber the barrel I would use a powerful fuel like hydrogen . I'm not sure the PVC will hold that amount of pressure Tom
Really really proud member of the Dutch Spud Clan!
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MaxuS the 2nd
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Lol, well thanks guys..It's probably going to rot in my shed now.
I'm a pneumatic man, I like them far more than combustions mostly due to the reliability.
I'm a pneumatic man, I like them far more than combustions mostly due to the reliability.
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MaxuS the 2nd
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I'm using very loosely fitting tennis balls and whatever else I can shove down the barrel. This cost almost nothing to make, the end plug is custom made from a piece of wood and bolted into the end. I'm using a schrader for supplying new air to the chamber.
I can't be arsed to make a propane meter for this beast, all efforts are going into my rather huge spud gun instead (it's yet another pneumatic).
I can't be arsed to make a propane meter for this beast, all efforts are going into my rather huge spud gun instead (it's yet another pneumatic).
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MaxuS the 2nd
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Lol, doesn't even produce a muzzle flash. 
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MaxuS the 2nd
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C:B Ratio was about 0.5:1. Yeah, I thought about moving the stop.
I did a dry fire earlier and it sure does require ear protection when standing right next to it.
I did a dry fire earlier and it sure does require ear protection when standing right next to it.
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MaxuS the 2nd
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It is rated for 10 bar (147.5psi). I'm doubtful it will fracture under such low pressures.