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Thread: HW97 Paul Short titanium piston kit - superb stuff!

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  1. #1
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    HW97 Paul Short titanium piston kit - superb stuff!

    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

    Click this link fo the video

    https://youtu.be/KbgcJ53ZG4E
    My youtube channel and please subscribe if you like itShooting at Dawn
    Facebook group Air Rifles

  2. #2
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    Another great video Neil thanks for posting, I often wondered is Paul a self taught tuner or has he worked for venom/v mach in the past.
    Weihrauch HW97 .177, Weihrauch HW80 .22, Weihrauch HW77 .22

  3. #3
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    Quote Originally Posted by para View Post
    Another great video Neil thanks for posting, I often wondered is Paul a self taught tuner or has he worked for venom/v mach in the past.
    I dont know mate. I know that is engineering work is second to none and that the stage 3 kit he made for me had thousands of pellets through it without any issues. I will ask him his background the next time I speak to him.
    My youtube channel and please subscribe if you like itShooting at Dawn
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  4. #4
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    Looks very nice indeed, thanks for making the video. Has he opened the transfer port at all? I would expect the lighter piston to bounce a bit with a standard port.

  5. #5
    JerryD is offline Will only use cherry lipbalm
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    Paul put a 25mm titanium piston system into my HW77 Mk1: this has been short stroked, glided and t.p opened. I am still playing around with it, not least of which in finding it crept up to 810-812, despite having an easy cocking stroke. Removed one packing washer to get it back to high 780s.

    I too have a Paul Short stage 3 '97, and was sceptical that it could be improved on. The lighter piston does transform it. Yes it recoils, but in a very benign manner and not much.

    Only difference in the gliding is that Paul completed sleeved the compression tube rather than buttoning it but it still means no metal-metal contact anywhere.

    Well worth the money spent (£170): I just need to get the action re-finished to match the quality of the internals now!


    .
    Jerry

  6. #6
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    Quote Originally Posted by Loki_79 View Post
    Looks very nice indeed, thanks for making the video. Has he opened the transfer port at all? I would expect the lighter piston to bounce a bit with a standard port.
    Opened to 3.4mm
    My youtube channel and please subscribe if you like itShooting at Dawn
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  7. #7
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    piston seal

    surprised to see you still have the original seal, a lot of tuners change the seal, always enjoy your vids

  8. #8
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    Another great video neil180...

    Looks like you are happy with the results, it will be interesting what the accuracy and power is like when its bedded in.

    Does this mean you dont need tbe stage 3 kit anymore. If so ill call first dibs. Lol

    Looking forward to the next installment.
    Daystate Regal xl .177 / Hawke niteeye 6-24x50irsf...
    Weihrauch HW97 .22 tbt kit / Hawke sidewinder 30 10×42...

    2 ferrets and a net...

  9. #9
    barrel's Avatar
    barrel is offline Work is the refuge of people who have nothing better to do
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    Neil that's a first class video mate, out of interest what costs are involved?.

    Kindest regards

    Barrel
    IF I WALKED ON WATER PEOPLE WOULD SAY I COULD NOT SWIM !

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