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Thread: 2250B Crosman new valve stem

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  1. #1
    Join Date
    Dec 2021
    Location
    Camberley
    Posts
    71
    Quote Originally Posted by Shed tuner View Post
    so reducing the valve stem diameter around the port will increase gas flow and raise fps, at the expense of gas consumption, yes.

    but you are simply inputting more energy into a not particularly efficient system. The first mods I do to a 22xx are transfer port sealing (they normally leak) and an SSG, which noticably improves efficiency. A 19" barrel helps a lot too, but it's a bit long.

    HTH - JB
    And take coil off the hammer spring?

  2. #2
    Join Date
    Apr 2002
    Location
    Near Wimbledon, SW London, or Lusaka, Zambia
    Posts
    26,479
    Quote Originally Posted by Berber View Post
    And take coil off the hammer spring?
    not if you fit the SSG
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.

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