Thread: Help needed with making an air spitting prop..

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Okay Need some help making my big spider guy spit air, I know a few things i need but over all i have no idea. i know about the compressor, what confuses me is the valves, i want it on a timer can someone steer me in the right direction please.

Zombie, as far as making your spider "spit" i am guessing you would need a solenoid valve linked to either a timer mechanism or something like a prop controller card which will then trigger the solenoid to release a blast of air for a specific period of time, then close the valve until the next event. There are plenty of documents scattered throughout the web discussing this.
I am going to be using this controller on my project this year
picoBoo FI-104 - Controllers
Here is a great page i have found discussing the basics in pneumatics and prop control as well as solenoids.
FrightProps - Halloween Decorations, Halloween Props, Pneumatic Props, Animated Props, Halloween Accessories
And also, check out this page by our own Skeletalremains......
Beginner's Guide to Props and Pneumatics - Halloween Forum

I want to do this too. Probably have air come out of the mouth of a maniquin that people walk by... need some advice too.. THANKS

i would use a water pic (for teeth) and hack the pump into a bigger holding tank an make it spit water (little safer than air) just a thought ?

Use a cheap air brush from harbor freight

Also......have a look at this.....

Halloween Props - Halloween Animatronics - HauntedProps.com

and this.......
hissing, misting, simple spitter

and this.....
Acid Spitter Animated Prop - Decorations & Props

Originally Posted by The_Caretaker

Use a cheap air brush from harbor freight

Air brush??

I think he means an air brush (pen type hand held spray gun) that you can disassemble and modify to make the spitter you want. It already has a nozzle and the water reservoir. In theory, it could work with very little modification............

Originally Posted by Zombie69

Okay Need some help making my big spider guy spit air, I know a few things i need but over all i have no idea. i know about the compressor, what confuses me is the valves, i want it on a timer can someone steer me in the right direction please.

I've made a few sprayers both air and air/water misting. see my 2008 display link in my signature and you can see the one I made for my spider. That was a venturi fitting that sucked up a very samll amount of water and atomized it into the spray.


You are in OH, like PA I am guessing your Halloween nights can be a bit chilly, so you may want to think twice about wetting anyone too badly.

That past Halloween I used 2 ceiling mounted dry sprayers mounted in the ceiling blowing down from behind the patrons. After testing various nozzles, I got the best performance from rubber (blow gun) nozzle tips.



As far as valves go, you can get away with a simple Normally Closed solenoid valve. Can be found pretty cheaply. You just need to decide what voltage coil you want to work with and what sort of trigger/timer setup you want.