jeff wrote:hungryrob wrote:Born Again wrote:Some performance bike tyre fitters offer a dry nitrogen fill. Worth a look.
Sounds like a good idea!
Must look for them locally
You'll get Argon from a decent technical-biased dive shop (Especially up there in dry suit land) too, but I have no clue if it's heavier than air, or better/worse than CO2 or Nitrogen.
If you really wanted to get silly, you could probably make yourself a box with rubber gloves sealed into it (Like for grit blasting, etc.) and have it pressurised off a cylinder enough to displace air and then do the scope back up while inside it....
Hmmm, could a "sealed" box with plenty of dry air from a dive cylinder blown through it work? I dont think you need a fancy gas mix (though an oxygen free environment may make scope internals last longer I suppose) just a lack of water to condense out is what youre after isnt it?
Remember that argon and nitrogen are used commercially to gas poultry, and CO2 works too, it's just more unpleasant to be gassed with, so working with these gases isnt risk free, do so in a well ventilated area etc etc.