HW97 fitted with Paul Short titanium piston – superb!

Forums Springers, Pumpers, C02, & Vintage HW97 fitted with Paul Short titanium piston – superb!

  • Views : 3363
  • Link

    neil180
    Participant
    Member

    Tonight I fitted the titanium piston. I never thought that you could make much difference to the stage 3 gun because it shoots really nice but….. I took out the stage 3 kit and put in the titanium kit. The titanium piston is LIGHT – I didn’t believe how much difference it could make but I weighed the standard piston, the stage 3 piston and the titanium piston ….. you will see in the video. It needs more preload to power that light piston. The stage 3 kit needed almost none – the titanium about 20mm. The shot cycle – my god, the difference is marked. Almost no sight picture movement. A fast shot cycle but really nice. Very, very nice. Impressive stuff. As ever with Pauls work, it is beautifully made – the new spring provided has the ends dressed and polished, the guides are perfect and the machining on the piston etc is a pleasure to see – almost a shame to hide it away in the gun. There will be many pellets going through this gun this weekend :D

    Link

    jps2486
    Participant
    Member

    Why couldn’t you drill a series of lightening holes in a standard HW piston to reduce the weight?

    Link

    neil180
    Participant
    Member

    There are a variety of ways to achieve the same effect. The holes route has been done before too. Its all about smoothing that shot cycle and getting everything running as well as it can. The delrin bearings keep everything concentric and the titanium piston gives the lightness. But yes – you could just drill a load of holes in your standard piston.

    Link

    scrane
    Participant
    Member

    I like that a lot!
    Any power difference before/after?

    Link

    neil180
    Participant
    Member

    “scrane”I like that a lot!
    Any power difference before/after?

    
Its Uk – so it has to be sub 12 ft/lbs. Before it was doing just about 11 ft lbs and shooting sweet – now it is producing 11.4 ft / lbs. It needs more preload but the shot cycle is nicer :D

    Link

    scrane
    Participant
    Member

    The 97 must make a great test bed for modifications. I have a 25mm HW77 I bought over 20 years ago and it still shoots very smooth and is very accurate. 
    I am a fan oh higher power PCPs and lower power springers. I imagine many people don’t know what a joy a well behaved springer is to shoot. My easy to cock, smooth shooting  beech Freimark HW35 is quite a contrast to my pretty but bumpy 12+ fpe HW35E.
    I very much appreciate your post and video.

    Link

    RifleDude
    Participant
    Member

    Thank you for your post and video, Neil! I have enjoyed your other videos of your HW97 tuning kits as well!

    Link

    dannyshoots
    Participant
    Member

    I have a 97 I'm ready to tune. How can I procure this Paul Short kit?

    Link

    Kar_shooter
    Participant
    Member

    Big fun of yours sir. And your videos also. Keep uploading such nice videos

    My HW97 is in a very talented local tuner. 

    He will reduce the piston weight too. 

    I am also waiting a vmach race muzzle brake and trigger tuning from Steve Pope him self. 

    When she will be ready i will post a review. 

Viewing 9 posts - 1 through 9 (of 9 total)

You must be logged in to reply to this topic.