That's practically what I did, though instead of o-rings I cut holes in sections of neoprene to make my own seals. What I meant was the bolt itself should have grooves with the o-rings mounted on it, in the manner of a piston in a chamber sealing valve.Hawkeye wrote:You might as well grease it up well, add the o rings and cast right over them don't you think?
Jack's semi pellet gun?
- jackssmirkingrevenge
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hectmarr wrote:You have to make many weapons, because this field is long and short life
- jackssmirkingrevenge
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I'm not sure, I've seen some pretty friction-free setups using o-rings so conceivably it could work. Another solution which I considered was to have a friend machine the bolt and housing for me to extremely fine tolerances, of course this would leak a little but you could add a separate ball valve beween the chamber and the breech to ensure that it only leaked while firing so air loss would be negligible.
hectmarr wrote:You have to make many weapons, because this field is long and short life
Well I meant the valve that I made according to the drozd's working:Hawkeye wrote:Is this not identical to the Drozd system that Ant posted the animation to? A bit more stretched out but functionally identical.
The problem was that the orings created too much friction.
Check this link: homemade valves
Edit: I just noticed that this post is pretty old.
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I had made this several years ago - spudtech post June 2004! - unfortunately it's hard to compromise between a good seal and limiting the friction, though I suppose it you were willing to live with a slight leak you could make it just a right fit and remove the o-rings.
hectmarr wrote:You have to make many weapons, because this field is long and short life