pic: T-Shirt Launcher, still needs a chasis

[Bruceb]

I knew we would get some warnings about the PVC. We have 2 GE engineers on our team and they don't see how this PVC can be a problem. We did not buy the cheap unrated PVC from Manards, this is all pressure tested and pressure rated PVC. The 3 in dia reservoir is rated at something like 320 psi. Don't remember the exact spec but it was WAY higher than the 60psi we intend to carry at max. I was thinking about wraping it in fiberglass cloth and epoxy just for safety but I realy don't think it is an issue. I can't help thinking that the accidents have been caused by using the unrated pipe or overpressurizing it. Any way. The chambers are gasketed at both ends with a spring loaded deal that seals both ends of the chamber. We do get a little leakage here but not much. I think at max elevation and 60 psi we could launch a rolled up t-shirt about 200 ft. Thats a guess as we have not tried it outdoors yet but it hits real far up the wall indoors.
Bruce