[Billyboy]

Hi Gazz

I recently purchased a Cobra Sub pneumatic speargun at a swap meet in Toowoombe (Queensland) - so maybe they were imported into Australia. I've only ever used rubber powered guns before so know nothing about this one. The gun looks virtually unused. but the inlet valve was shot. I epoxied in a bicycle valve and pumped it up to 120 psi, but it doesn't appear to have much power at that pressure. Do you have any idea what pressure they should run at? It seems to hold its pressure OK, but I don't have a compressor to get any more pressure into it. I have the original pump but it won't pump through the bicycle valve. I doubt whether I'd get a new valve for it.

Cheers
Bill