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Power Help!

Discussion in 'Technical' started by ChrisR7676, Sep 7, 2020.

Tags:
  1. ChrisR7676

    ChrisR7676 Active Member

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    Location:
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    Recently fitted a TBT kit (the one with just the Delrin spring guides and washers). When disassembling I removed two thick metal washers from the bottom inside of the piston and decided to refit without the two power washers supplied to see what power I was at.

    I’ve fired about 50 pellets through and power wise I’m hitting about 10ft/lbs (was 11.4ft/lbs) I’m assuming the power has reduced as I haven’t refitted the two thick metal washers but I’m wondering what sort of power increase I would expect from the two delrin power washers.
    Cheers
     
    Last edited: Sep 7, 2020
  2. PhatMan

    PhatMan Keyboard Hero

    Messages:
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    Location:
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    Chris,

    You will need to add the difference between the '2 metal washer thicknesses' and the top-hat thickness, to end up with approx. the same spring pre-load as before.

    The loss of weight in the piston may also affect the output.

    Try one (1) of the delrin washers and see what the energy goes up to.

    Have fun :)

    Best regards

    Russ
     
    ChrisR7676 likes this.
  3. Tadpole

    Tadpole Super Moderator Staff Member Mod/Admin

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    Any more than the above info by pm please as per forum rules .. ;)
     
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  4. ChrisR7676

    ChrisR7676 Active Member

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    Okay, thank you for the help! I have some other questions but I’m assuming that will have to be done over a PM?
     
  5. Nords

    Nords Thermal Fiend

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    Will do Tadpole, however may I ask what rifle? I had a metal top hat in my TX200, which Nick’s kit replaced with a delrin one, the same size. Having washers at the piston end seems a bit odd...

    Chris, you can always give Nick a ring....

    (Tadpole’s comments refer to any tech that could take a rifle above the legal limit, as per the forum rules)
     
    ChrisR7676 likes this.
  6. Gat Man

    Gat Man Posting Addict

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    Yes
     
    ChrisR7676 likes this.
  7. ChrisR7676

    ChrisR7676 Active Member

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    It’s a HW95k and yes two metal washers in the bottom of the piston. I’m just waiting on an email reply. Cheers!
     
  8. ChrisR7676

    ChrisR7676 Active Member

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    If anyone has any help could they PM me as I don’t want to break any rules in this post. Thanks
     
    Tadpole and Nords like this.
  9. Nords

    Nords Thermal Fiend

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    There are 95 gurus on here Chris, and people who know about HW95 too.... I’m sure someone will ping you soon.
     
    ChrisR7676 likes this.
  10. ChrisR7676

    ChrisR7676 Active Member

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    Yes sorry I think I should of put tuning help as the title instead.
     
    Tadpole likes this.
  11. ChrisR7676

    ChrisR7676 Active Member

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    Thanks I’ll keep an eye out
     
    Tadpole likes this.
  12. ChrisR7676

    ChrisR7676 Active Member

    Messages:
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    Hopefully this will end this thread!

    I quickly stripped the gun made a couple of adjustments & it’s brought the power up from 10.10ft/lbs to 11.24ft/lbs which is perfect really! Safely under the limit and room for bedding in. Before all of this I was running at 11.4ft/lbs but now I have a smoother shot cycle with little difference in power.

    Thanks to everyone who replied on here and sent me direct messages. Very much appreciated!
     
    Last edited by a moderator: Sep 7, 2020
    Harrypotter and Tadpole like this.

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