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what do you think about this piston systeme ?

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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Unread postAuthor: CpTn_lAw » Thu Nov 12, 2009 1:13 pm

Ragnarok makes a point! If you were to build a pneumatic launcher, you wouldn't use the air that is vented by the pilot valve, you would simply try to get its volume to a minimum to avoid a big air loss. In your hybrid model valve, it's like you try to over-complicate things just for a minimal gain.



Ragnarok a raison, si tu faisais un canon a air comprimé, tu chercherais pas à utiliser l'air qui est ejecté par ta valve d'activation, tu voudrais juste que le volume d'air qui sorte soit minimal comparé a celui gardé pour le projectile. Et bien la j'ai l'impression que tu te compliques trop la vie, juste pour un gain minimal.

P.S.: bon courage pour l'anglais, les forums sont une super aide ;)
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"J'mets mes pieds où j'veux, et c'est souvent dans la gueule."
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Unread postAuthor: ceizz » Thu Nov 12, 2009 1:58 pm

finaly its maeby better with a pop-off, la nuit me portera conseil car je vais me coucher!

thank you for the french help, i just would like to know what systeme use the cobra, or larda, do you know ? burst disk or piston

if piston what about ? how is work ?
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Unread postAuthor: ramses » Thu Nov 12, 2009 5:26 pm

No poppoff is necessary. If you have an appropriated compression ratio, the air will act as a bumper. If not, good luck stopping a large metal slug without damaging anything. I know my contest entry sucked, but I will link to it anyway
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POLAND_SPUD wrote:even if there was no link I'd know it's a bot because of female name :D
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Unread postAuthor: ceizz » Thu Nov 12, 2009 9:55 pm

thank you rames for this comment, i know what i will do i will show result of my hybrid !!
:D :D :D
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Unread postAuthor: Brian the brain » Fri Nov 13, 2009 2:39 pm

This is what Eurospudguns is made for:

http://jumbodesign.nl/phpBB3/index.php

Go to the French forum section and you can talk all you want.
Main event is still here of course...
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: ceizz » Sat Nov 14, 2009 8:53 am

i like training my english so why i am here :D
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