Where can I buy this ODD SIZE PVC?

Grey in color? It is probably electrical conduit..

found

The gray color makes me think it might be electrical conduit.

Can you put some sort of stuffing around the beer can to make up the tight fit? The idea is from the sub caliber munitions used in tank cannons.

DO NOT USE PVC FOR THIS!!!

PVC has a very nasty habit of fragmenting under shock-loads. If you must, at least wrap it with wire, so that if it does fracture, the bits can't get into people. HDPE is better, as it doesn't do this.

it is called "pb" pipe it is a light pvc used for underground electric lines, try a electrical supply house.

The really dark grey is schedule 80 pipe. Light grey is electrical.

Check with a commercial plumbing house. If they do not carry it, they should know who does in your area.

Might look here:

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found

Try looking here:

"PVC Pipe Schedule 20 (a/k/a IPS and Thin Wall) Pipe Outside Diameters have as of January 2001 been verified as consistent with those industry standard dimensions also specified in ASTM D 2241 - 00. The PVC pipe referred to in this Table is poly(vinyl chloride) PVC pipe for use in the distribution of pressurized liquids only, and is typically used in irrigation systems."

Hope that helps.

Not necessarilly, as I have several lengths of grey Schedule 80 PVC. About 1 1.4 inch OD, more or less, IIRC.

And Schedule 80 is THICK walled. Real thick.

Local HD carries schedule 40 PVC conduit in the electrical section. Even if you are launching empty cans sked 20 sounds light for the use. I don't know about the ID for sked 40 in relation to your cans. Using 3" sked 40 PVC I can launch a 9.5 ounce water ballon abount 150 feet and over a middle aged oak tree. Used it this Sunday last to launch a variety of nerf and whiffle balls for the the children of visiting friends. Great set up, I pull the launch lanyard and the children run to recover the ammo. Details to be posted to the spudguns newsgroup.

John H.

Hey Martin,

I seem to recall that the "pipe" used for centra-vac (residential central vacuum) systems is a "weird" size. I don't know much about aluminum cans, but I'm sure they also come in lots of weird sizes.

Take care.

Brian Laws>I have two small pieces of 2-1/2" SCHEDULE 20 that I found, but I need

Could do that, and use larger (more available) pipe, but saboting is an undesirable trouble I'd rather avoid.

thanks,

Martin

At this point, we're not certain it's PVC. Actually, it may not be, owing to the coloration. When I find the off-the-shelf material that matches what I have, then I'll know.

thanks,

Martin

On 3 May 2004 13:10:14 -0700, snipped-for-privacy@yahoo.com (Remove SPAM From Address to Reply) shouted from the rooftop:

SDR21 2 1/2" irrigation pipe. Home centers don't know jack about irrigation pipe.

-Carl "An honest man doesn't need a long memory"- Jesse Ventura

The section in my spare parts dept. is 2.00" OD, 1.84"ID. Gerry :-)} London, Canada