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Butchered

Discussion in 'Anything Airgun Related' started by Mcdemon, Jan 26, 2014.

  1. Mcdemon

    Mcdemon Engaging Member

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    I recently bought a 2nd hand HW98 .22 which I checked over the club chrono last time out.

    Ooops running at 14.8 ft lbs!

    I bottled the club competition today as the weather was horrendous and didn't fancy water ingress into my panther ( I am sure a fellow club member will be along soon to have a go for being a pussy!).

    Instead I thought I would have a go at reducing the power somewhat. I have never stripped a springer before but with the help of a you tube video I managed to strip successfully and decided to take a couple of coils off the main spring. The amount of caked half baked grease was incredible so a good clean of the internals was carried out.

    First attempt only took the power down to 14.2 so a quick strip and three more coils was in order. ( it was a doddle to strip and rebuild 2 nd time)

    Result a 10 shot string over the combro gave an average of 589 fps and a very healthy 11.25ft lbs.

    I have never stripped a springer before and am not mechanically minded so it is not outside the realms of possibility that anyone could have achieved this. The excellent resources available on here and YouTube also gives clear concise instructions that a fool like me can follow.

    I am not sure what the original spring is and am not sure whether the weihrauch spring wood loosen enough to give the high readings but a good result none the less. I intend to fit a new spring kit and semi tune the rifle including the trigger sears eventually but this was a good start.

    [​IMG]

    ATB
    Mark
     
  2. DaveC_24

    DaveC_24 Busy Member

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    Well done for getting it back under the limit, and for getting the thing apart ok! The first springer I ever dismantled was an HW95k, which is the same rifle inside. They're not the easiest rifle to get into, but neither are they too bad!

    I think the HW98 has a round-section spring from the factory rather than a square-section spring like you have just cut. Unless they ever were fitted with a square-section spring from the factory on older rifles, my guess would be that somebody has put an over-powered spring into it, hence your problem.
     
  3. pernod

    pernod Well-Known Member

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    Im not an expert. But that looks like a square section ox spring. They are meant to be rubbish.

    pernod
     
  4. Egg

    Egg Major Poster

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    That's defo an Ox - or parts of one anyway. Haul it out entirely, bin it and get a decent one. The difference will be chalk & cheese.
     
  5. mrtho

    mrtho Busy Member

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    As above,that is an OX spring and should be binned it can damage the inside of the guns cylinder.The square edges of the coils can gouge into steel.
    Get a replacement spring such as the correct Titan spring for your model of gun or an original HW98 spring.

    ATB.
     
  6. Jackroadkill

    Jackroadkill Donator

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    This. Get a Welsh Willy kit in there and it will feel like a different rifle.
     
  7. nick2

    nick2 Keyboard Hero

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    "I bottled the club competition today as the weather was horrendous and didn't fancy water ingress into my panther ( I am sure a fellow club member will be along soon to have a go for being a pussy!)."
    Four of us turned up Mark. Comp was called off due to it being tooooo slippy on the hill.
    No wonder you were hitting so many targets last weekend, 14.8ft/lbs must have flattened out that .22 curve a tad.
     
  8. SteveO

    SteveO Top Poster

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    Those springs are horrid and make the gun cycle terrible!

    as an aside did you heat the end of the spring to red hot and compress and grind to finish it off, wet and dry and polish it?
     
  9. Egg

    Egg Major Poster

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    In all honesty I'm amazed that Ox mainsprings are still being sold - the power of marketing and suggestion at its best I suppose. They are horrendous springs IMO. Not only can they put guns over the limit but they can do all sorts of internal damage to the guns unfortunate enough to be violated by them.

    I remember being 17 and falling for the hype back then - I stuck one into a BSA Mercury and the cycle of this gun was absofeckinglutely atrocious. Rough as a robber's Rottweiler and twanged like a guitar.

    Total and utter cack.
     
  10. SteveO

    SteveO Top Poster

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    I suppose it's a sensory thing, they make the gun appear more powerful because of the noise, vibration and unrefined recoil!

    easy to sell that to uneducated buyers!
     
  11. nick2

    nick2 Keyboard Hero

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    I've shot that gun Steve, & you would be surprised how nice it was to shoot, ( running hot might have something to do with it)
    To call Mark uneducated is about right, haha.
    An uneducated buyer he is not, especially at the price he paid for it.
     
  12. SteveO

    SteveO Top Poster

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    Sorry Nick, I wasn't suggesting Mark is uneducated in any respect but rather Ox probably rely on the effects it product produces to sell it! (I know you knew what I meant though ;))

    "Hey mate, I fitted this Ox spring in my air rifle, it's really powerful now"

    when really it isn't, it's just running rough and unrefined!
     
  13. nick2

    nick2 Keyboard Hero

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    No worries Steve, Mark's a joiner by trade, he'll be trying to polish that spring with sandpaper:D
     
  14. Mcdemon

    Mcdemon Engaging Member

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    no offence taken Steve.

    if it is an oxspring it is surprisingly smooth to shoot but I will be changing it when I get around to it.
    fancy doing it myself the tuning that is but no I haven't heated the end of the spring where it sits in the top hat. I cut and dressed it with a grinding wheel only will this cause me problems? It is dressed off without sharp corners?

    obviously if I bought a new Titan this would have to be reduced also? Unless I bought a full tuning kit?

    it would be more satisfying to tune it myself though?

    Mark
     
  15. Mcdemon

    Mcdemon Engaging Member

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    No Nick not the power but pure skill!!!!!!!!!!!!!!!
     
  16. nick2

    nick2 Keyboard Hero

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    My Rse!
     

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