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Uses for an old solenoid

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Uses for an old solenoid

Unread postAuthor: Gun Freak » Sun May 30, 2010 4:06 pm

I have an old solenoid from an Orbit sprinkler valve, I was wondering if anybody ever put one to any good uses? I was thinking to make it push the button of my homemade DCV but then realized that it is too weak and the little bar thingy doesn't move far enough. Then came the idea to use one on a semi-auto in place of the air cylinder, but then again, the stroke is too short. Ideas?
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Unread postAuthor: irisher » Sun May 30, 2010 4:19 pm

I used one of my old ones as the trigger to a catapult.
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Unread postAuthor: Gun Freak » Sun May 30, 2010 4:21 pm

Haha cool. See I'm the one to never throw things out and eventually use them for something in which they work perfectly :P
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Unread postAuthor: kydavies » Sun May 30, 2010 4:53 pm

ya i used my old solinoid to for a magnetic pick up attachment for my little brothers crane
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Unread postAuthor: Technician1002 » Sun May 30, 2010 5:29 pm

With a magnet on it they work as a target contact microphone for magnetic (soundcard) chronographs.
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Unread postAuthor: covey12 » Thu Jul 08, 2010 9:27 pm

i shot it out of my 1in. cannon and it was brutal ammo
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Unread postAuthor: Gun Freak » Fri Jul 09, 2010 1:01 pm

Haha cool, maybe I'll chuck a 1" barrel onto my 2" piston valve and see the damage :twisted:
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Unread postAuthor: spikerbond » Sat Jul 10, 2010 3:58 pm

i have been thinking about using one in a mini coaxial as the piston that seals the barrel, that way you dont lose any air to a pilot chamber
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Unread postAuthor: jackssmirkingrevenge » Sat Jul 10, 2010 4:21 pm

spikerbond wrote:i have been thinking about using one in a mini coaxial as the piston that seals the barrel, that way you dont lose any air to a pilot chamber


Something like this? It would work, the solenoid needs to be strong enough to pull away from the breech though. Once it does however, no more differential pressure keeping it shut so opening time should be excellent.

For a 6mm barrel at say 150 psi, the solenoid would need to pull around 6.5 lbs.

Hmm, for a 1mm barrel at 800 psi the force is less than 1 lb...
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Unread postAuthor: Gun Freak » Sat Jul 10, 2010 4:29 pm

Alright Jack, you normally build everything first so why stop here :wink:
Also, you think there is a way to balance it so it doesn't have to be as strong?
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Unread postAuthor: jackssmirkingrevenge » Sat Jul 10, 2010 5:07 pm

Gun Freak wrote:you think there is a way to balance it so it doesn't have to be as strong?


Then you'd basically have Tech's tried-and-tested QDV design, but with electric actuation instead of manual. All you'd need is enough force to overcome friction.
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Unread postAuthor: Gun Freak » Sat Jul 10, 2010 7:15 pm

Not really, I mean keep the standard co-axial barrel sealing design but find a way to ballance the force so the barrel can come unsealed easier.
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Unread postAuthor: jackssmirkingrevenge » Sat Jul 10, 2010 7:23 pm

This is what I meant:
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Unread postAuthor: Gun Freak » Sat Jul 10, 2010 7:26 pm

Oh ok, that would work too. You gonna try something like it? Itll probably need a bumper too.
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Unread postAuthor: jackssmirkingrevenge » Sat Jul 10, 2010 7:30 pm

Not directly, but what I've put forward here is along the same lines, only using a servo instead of a solenoid.
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