Thread: Exorcist

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I am attempting Creep Crafters Exorcist Corpselator. Their design calls for a hand pump, but I am having trouble locating a similar one. Has anyone made and used a PVC cylinder? Are they safe? What about a cheap pneumatic cylinder with about a 17-inch throw..do they exist?

Here is the link:
The Exorcist -Creep Crafters .Com-

EDIT: I found this one (Giant Bimba Air Cylinder 3/4" Bore 14" Stroke-The Electronic Goldmine) but it says it needs 250 psi. Is that the minimum it needs to operate or the max it can use? (in other words, just a type-o).

Any help would be greatly appreciated!

Well PVC can be used to make cylinders, BUT it isn't recommended. PVC ages and becomes brittle, sunlight can age it quicker, and cold can make it brittle. All of which could lead to a cylinder rupturing and potentially sending plastic shards flying.

Bicycle pumps from Wal-Mart have been used, but again you are using it for something it was not intended for. If you decide to go this route, I suggest using it at a moderately low pressure. High pressure and you are again asking for trouble.

Real cylinders are really the best way to go. Try ebay or Monsterguts or Evilusions for cylinders.

Thanks for the reply. I've gotten the idea that they are not safe, just as you say. Did you look at the one in my first post...the bimba? I'm just curious as to if it the recommended pressure max out at 250 or if 250 psi is what it takes to operate it.

100psi is your operating pressure 250Ppsi will be the maximum operating pressure, most compressors available will be 100psi, most hardware is designed to be optimum at 100psi, and until you have some considerable pneumatics experience, I don't recommend that you have ambitions above 100psi

100psi in a 3/4" cylinder will give you a 40lb load per cylinder

PVC, bicycle pumps, door openers or any other ingenuous home made cylinder that some irresponsible individuals will recommend are an absolute NO, just don't even dare think you can get away with it. consider the what if your cylinder fails, (and yes cylinders fail), if its a properly made cylinder used in a manner consistent to the manufacturers instructions, then the failure is not your fault, if its a home made bodge job then you don't have a leg to stand on.

Yes, I gathered that form some other sites(about homemade cylinders).

So the ad just has a type-o about that particular cylinder needing a minimum of 250 psi to operate? I'd like to buy that one I just wanted to clarify the specs.

it has to be a typo, 250 PSI is a monstrous amount of pressure to be considered a minimum pressure, Id say it was the maximum pressure, or it should read 25psi

Look here:

FrightProps - Halloween Props, Pneumatic Props, Animated Props, Halloween Accessories

they have most any size you want.

I used a bicycle pump for my Corpselator. It was hard to find one. I found it at TSC stores in Canada. Mine runs on about 40 psi. I have been using it for 3 seasons now.

Originally Posted by Bones

I am attempting Creep Crafters Exorcist Corpselator. Their design calls for a hand pump, but I am having trouble locating a similar one. Has anyone made and used a PVC cylinder? Are they safe? What about a cheap pneumatic cylinder with about a 17-inch throw..do they exist?

Here is the link:
The Exorcist -Creep Crafters .Com-

EDIT: I found this one (Giant Bimba Air Cylinder 3/4" Bore 14" Stroke-The Electronic Goldmine) but it says it needs 250 psi. Is that the minimum it needs to operate or the max it can use? (in other words, just a type-o).

pvc cylinders are not safe at all. Take this from a guy who had a pvc air system at his machine shop explode an elbow and try to kill him.

Bimba cylinders can operate on anything from around 10-20 (the amount of pressure it needs to get the seals to break free and start moving), up to a MAXIMUM of 250 psi.

Please use the the bimba or any real pneumatic cylinder vs. going the bicyle pump/pvc/door closer route.