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percussion cap ignition?

Post questions and info about hybrid (compressed gas with fuel) powered cannons here. This includes discussion about fuels, ratios, ignition systems, build types, safety, and anything else relevant.
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percussion cap ignition?

Unread postAuthor: jean » Sat Nov 02, 2013 6:47 pm

hi
on a muzzel loader the gas of the percussion cap reach the blackpowdwer for ignition.. right?
what is if the gas was forced via a check valve, into a hybrid chamber. do you think it will work? what is a possible material for the seal of the check valve?

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Re: percussion cap ignition?

Unread postAuthor: fenrir » Sat Nov 02, 2013 9:20 pm

Percussion cap ignition- This idea has been discussed multiple times, use the search.
I don't think a check valve would be strong enough, because of the extremely high pressures generated by hybrids.
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Re: percussion cap ignition?

Unread postAuthor: sharpshooter » Sat Nov 02, 2013 10:44 pm

If your figured out how to seal it in, it could work. But I don't think it provides any benifit over a proper sparkgap or 2. And that costs an extra $0.10-$0.15 a shot.
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Re: percussion cap ignition?

Unread postAuthor: jean » Sun Nov 03, 2013 6:14 am

no benefit over a spark gap. but it is for a musket style rifle and it woukd be really cool... maybe it could work with toy gun caps? target is to ignite 5-10x hybrid. and in case of flobert the pressure in the hybrid chamber will rise very high.<-power incrase?
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Re: percussion cap ignition?

Unread postAuthor: jackssmirkingrevenge » Sun Nov 03, 2013 6:58 am

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Re: percussion cap ignition?

Unread postAuthor: jean » Sun Nov 03, 2013 1:03 pm

sorry but i now know all about tungsten and so on but no help for my answer.
need a proper sealing face maybe ptfe? any special design ideas for the valve?
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Re: percussion cap ignition?

Unread postAuthor: jackssmirkingrevenge » Sun Nov 03, 2013 4:25 pm

jean wrote:sorry but i now know all about tungsten and so on but no help for my answer.


I linked to that topic because Petitlu tried cap ignition but without success, drop him a private message and he might give you better advice about his experiences.

need a proper sealing face maybe ptfe? any special design ideas for the valve?


PTFE deforms over time, you will need to replace it after a lot of use.
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