PAC WithOutLoss

[Petitlu]

soon the firing system

[Gun Freak]

I'm liking the stock

Much better. I still wouldn't want to have my face near it

[POLAND_SPUD]

As he said, a leak on the pilot side of a QEV, or an airtight projectile combined with a leak on the front seal of a QDV can also trigger the shot.

Seriously ?? a leak will just vent to the atmosphere... I don't think this can trigger it... the only question is >> wouldn't it be a better idea to add a piston that does what ammo does right now ? If there was a valve he could use and ammo that fits the barrel

[Petitlu]

"J'ai encore ne voudrais pas que mon visage près qu'elle "

the breech is screwed so it is good!

[Gun Freak]

Mais je ne voudrais pas que mon visage près que 600 psi

As long as you feel safe with the construction, go for it!

[Petitlu]

ok
I understand you


PAC with my high pressure 3000psi on my face!

[al-xg]

A leak will just vent to the atmosphere,

Not with an airtight projectile... or as was mistakenly stated an airtight bolt on this valveless design.
Not much pressure is needed to move the projectile forward.

I'm pretty sure this has happened before, may have been on one of the french QDV launchers though.



Hehe, but then it wouldn't be valveless
He uses the same projectiles in his other copper barrelled canons. and in fact aren't those the ones you were saying would be good simple affordable drag stabilised projectiles ?

[Gun Freak]

PAC with my high pressure 3000psi on my face!

Je ne le ferai jamais

[POLAND_SPUD]

and in fact aren't those the ones you were saying would be good simple affordable drag stabilised projectiles ?

yup and I like them but I can't say I don't understand those who would like to be able to shoot just anything that fits in the barrel

Not with an airtight projectile... or as was mistakenly stated an airtight bolt on this valveless design.
Not much pressure is needed to move the projectile forward.

I still don't get it... air would have to leak out fast enough to create an area behind the projectile where pressure is > 10psi or so

[Gun Freak]

But if the projectile is airtight and the man's using 600 psi then it's not going to take long at all for 10 psi to collect behind the projectile.

[Petitlu]

"
But if the projectile is airtight and the man's using 600 psi then it's not going to take long at all for 10 psi to collect behind the projectile."


not because behind the projectile is not sealed so the air to the atmosphere from

No pressure rise ...

[Gun Freak]

Don't worry Petitlu, it doesn't apply here since your ammo is your valve.

[Brian the brain]

But if the bolt leaks you will get some loss.

So...

How about this idea:
Use the firingpin as the safety.

In cocked position it should leak, when released it should be as airtight as possible.

You could do this by having it all fit REALLY snug to avoid unnessecary losses ...then file the portion that travels in the bolt down so when cocked there is an open airchannel.

This could be done without any other changes.

[Petitlu]

sorry but I do not understand ...

[Brian the brain]

projectiles=good
launcher= very good!




For safety reasons with 100% seal : change the bolt.

Cut out a section, see picture.

Maybe ask Al-xg for translation.