solenoid to pilot a hammer valve

[Goats spudz]

Cylinder
http://www.ebay.co.uk/itm/Pneumatic-air ... 523wt_1185

12v dcv
http://www.ebay.co.uk/itm/DC-12V-Direct ... 989wt_1185

[wyz2285]

hum... interesting stuff
Are these cylinders operates as fast as a solenoid? anyway that 3-way is a cool thing to buy gonna ask my dad for more money

[pneumaticcannons]

wow im just finding this post know... what about a aeg pistol? I've seen cheapo models in the states for $40. You would get a nice grip too. Im just wondering if that would be over kill though as it is just functioning as a hammer lol.

[wyz2285]

No problem, feel free to share your idea anytime
A AEG pistol is a little overkill to be used as hammer, I have thought about it. Have in consideration of the price, even through it would come with a already made electronic selection fire. Specially here where I live is extremely strict about realistic bb guns, buy it from ebay it's impossible, buy one from store will cost me 87euro, too much to dismount it.

[Goats spudz]

where do you live because then we can find some friendly suppliers

[al-xg]

How about you go about this differently and only use the solenoid as a release mechanism for a more classic spring powered hammer using blow back to re-cock ?

[wyz2285]

I live in Portugal, practically the worst place a spuder can be.
I spent last night thinking about using air to blow back a spring hammer, for this valve is very easy, I only have to drill a port in the back of the valve stem. But can't give me selection fire, witch is my main goal of this project, only full auto, as I can't figure out a trigger mechanism for semi auto.

[pneumaticcannons]

-No-

thailand is the worst

personally, I think the blowback thing would defeat the purpose of the valve you have created. What happened to the solenoid that you said you ordered? did it work?

[wyz2285]

The problem is that solenoid isn´t working as good as I hoped, the metal core of the solenoid only alows 2 cm of travel distance, the valve needs at least 1.5cm lifting only 0.5 cm for the hammer to accelerate before hit the valve right now I my try to make a longer core for the solenoid

[al-xg]

personally, I think the blowback thing would defeat the purpose of the valve you have created.

Technically his design is allready somewhat blow back operated.



Select fire with a solenoid operated sear would be pretty easy to acheive.

As far as semi-auto is concerned nearly all blowback powered airguns/paintball guns/... would run full auto if it wasn't for the trigger group design. Have you had a look at the ZDSPB.com marker animations ?

[wyz2285]

Yes I have looked some paintball animations, some of them are quite neat design, but make those trigger with precision with the tools that I have is difficult.

[wyz2285]

After a small modification of the valve´s spring, the solenoid+valve is working
So I ordered this, it´s a NE555 timer chip.
After a short reading about 555 timer chips, I´m not able to come up with a circuit for semi/auto (a 3 shot burst fire if possible ). So if somebody have already done this, help is very appreciated

[jackssmirkingrevenge]

After a small modification of the valve´s spring, the solenoid+valve is working

video!

[wyz2285]

Jack can't you wait until it's more presentable? It's quite ghetto now, and I only put well made products on my youtube channel
Right now just a 12v dc input to the solenoid, when turn it on, opens the valve, when turned off, the valve closes, smooth action

[jackssmirkingrevenge]

Right now just a 12v dc input to the solenoid, when turn it on, opens the valve, when turned off, the valve closes, smooth action

That sounds presentable enough