“hop-up” in BB guns

Discussion in 'Airguns' started by NRADAVE, Feb 25, 2019.

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  1. cobalt327

    cobalt327 Member

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    For a extensive O-ring material chemical resistance list, click The O-ring Store.

    TLDR- Acetone isn't recommended for buna, denatured alcohol is okay.
     
    Last edited: Jun 17, 2019
  2. Inimical Jim

    Inimical Jim Member

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    Has anyone considered using a rare earth magnet attached outside the shot tube? I wonder if it would make enough of a "magnetic bump" to get the bb rotating.
     
  3. NRADAVE

    NRADAVE Member

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    There’s are several “discussions” And some trials regarding the use of magnets. “Bob E” on 3/18/19 posted on this thread a “blog” from Pyramydair
    concerning a successful attempt with magnets.
    And I know somewhere on the “putting more power —-“ thread there’s talk about it. Youll have to read thru it ——lots of info.
     
    Cvans likes this.
  4. JimmyDei

    JimmyDei Member

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    Mar 23, 2020
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    Hi Guys....Noob to the site.
    I’ve been very intrigued by this thread and I too have been contemplating installing a hop up to my:
    Crosman DPMS SBR 4.5mm bb airgun
    I played airsoft for years and have always kept my hand in the sport however recently I’ve been starting a collection of 4.5mm/.177 shooters.
    I love this Crosman it’s decent fun but was more than disappointed in its ability to strength out that increased FPS. I realise a good hop up makes this possible in airsoft. So I started looking and found this thread.

    I can appreciate it’s of some age but if anyone is still following this or has achieved success, please take the time to reach out.

    I too have started the process and am keen to share what I have planned. Any help or advice would be more than welcomed.
    I’m by no means a gunsmith or qualified engineer, however I am a decent handy man/mechanically minded bloke, not shy to tools and the shed. Lol

    Look forward to hearing from someone/anyone
     

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