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Thread: Help stripping and sorting a HW35k

  1. #196
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    sounds good. now just enjoy shooting it.. power will probably go up as it wears in a bit.
    Also the grease in the piston liner will rob a little power, but then it also damps down vibration, so a trade off worth making IMHO.
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.

  2. #197
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    Quote Originally Posted by Shed tuner View Post
    sounds good. now just enjoy shooting it.. power will probably go up as it wears in a bit.
    Also the grease in the piston liner will rob a little power, but then it also damps down vibration, so a trade off worth making IMHO.
    Yes itís certainly taken away 95% of the remaining twang, itís very civilised now

    Our club has finally opened with its normal opening hours, albeit with masks and cleaning etc so hopefully I get down there in the next week or so and see what itíll do

    Norm

  3. #198
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    Quote Originally Posted by Mr.Fixit-Norm View Post
    Following Shedtuners advice on piston sleeves, and not to overthink it I stripped the 35 down and looked around for a suitable sleeving material. I found some flexible clear plastic from the lid of a flash floor wipes tub but this proved to be too thick at 0.5mm

    My search led me to the recycling bin and I dug out a 2L plastic milk container. I cut a big bit out of the side and it had a nice slippery feel to it. ( the label said it was PET ) it was also 0.2mm thick so ideal.

    I worked out the internal circumference ( 75.36mm ) and made the sleeve 75mm x 100mm long. It rolled easily and I fitted it in so it went into the stepped area then put the delrin slip washer back which trapped it, making sure the small open slit was opposite the cocking slot as suggested

    Then I added some more molyslip to the piston so that it lubricated the inner part of the sleeve ( shouldíve done that first ). It was an interference fit now but I figured it would wear in a bit.

    Reassembled and putting FAP pellets through it over the chrono it had lost a bit of power and was down from an average of 580ft/sec ( 10.2 ftlbs ) to 568 ( 9.7ftlbs ) but very consistent ( 563 - 572 ! ), which might be because the spring is a little tighter in the sleeve. I decided to add the remaining TBT delrin slip washer inside the piston and lo and behold despite only adding 3mm of preload the power went back to 587ft/sec 10.3ftlbs ( 583 - 591 spread ) with virtually no twang and no perceptible increase in cocking effort

    Win win all round ( and a win on the Remy Express compact thread as well )

    All I need to do now is find a 5Ē long moderator for the 35k and Iím sorted. ( so itíll fit in the new gun bag without having to unscrew it )

    Many thanks to all the contributors to the thread, and for all the good advice

    Norm
    Result! Nice one, Norm. As JB says, just enjoy now.
    THE BOINGER BASH AT QUIGLEY HOLLOW. MAKING GREAT MEMORIES SINCE 15th JUNE, 2013.
    NEXT EVENT :- October 9 & 10, 2021...BOING!!

  4. #199
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    Quote Originally Posted by TonyL View Post
    Result! Nice one, Norm. As JB says, just enjoy now.
    Thanks Tony, itís been an interesting job and Iíve learnt a lot. Itís definitely going to be one of my favourite guns , with the Remy close behind

    Iím thinking now with my new found skills I might revisit the BAM DB4 I sorted out last year ( youíll probably remember it, itís the one with the marmite custom sprayed stock )

    Iím thinking now of sleeves etc

    My poor precharged guns will be feeling left out at this rate, although I have got a VERY odd homemade 0.25 precharged, break barrel bull pup one that needs to be revisited

    Norm

  5. #200
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    Once you've been infected with the fettling bug, likely recipients can come from many varied sources.

    If you ever were to get the chance and once Uncle Mick is well enough to once again host The Boinger Bash at Quigley Hollow, you simply have to witness his heavily modified B2..

    Plenty of other "budget" type guns that have been fettled always there to try, too.


    Tell us more about that homemade PCP then.........When I first saw "break barrel" I was thinking along the lines of the Bowkett / BSA Spitfire. Something tells me this will be different.......?..
    THE BOINGER BASH AT QUIGLEY HOLLOW. MAKING GREAT MEMORIES SINCE 15th JUNE, 2013.
    NEXT EVENT :- October 9 & 10, 2021...BOING!!

  6. #201
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    Quote Originally Posted by TonyL View Post
    Once you've been infected with the fettling bug, likely recipients can come from many varied sources.

    If you ever were to get the chance and once Uncle Mick is well enough to once again host The Boinger Bash at Quigley Hollow, you simply have to witness his heavily modified B2..

    Plenty of other "budget" type guns that have been fettled always there to try, too.


    Tell us more about that homemade PCP then.........When I first saw "break barrel" I was thinking along the lines of the Bowkett / BSA Spitfire. Something tells me this will be different.......?..
    Yes itís very different indeed !
    Many years ago my late friend Martin Cooper started making this rather unusual beast but for some reason abandoned it. I came across the Ďactioní 6 years ago after he died and his sister asked me to have a look at all his airgun stuff.

    He was a very clever and skilled engineer, a coded welded and had a good understanding of air guns and pressure vessels. He made to the best of my knowledge three precharged airguns, two as 0.177 target rifles and one 0.22 as a hunting gun, along with a very nice target pistol.

    All of them are very accurate and well made. I own the last target rifle he made which he gave me six months before his death ( and flatly refused to take any money for it, having also given me his original target rifle 2 years before. ) I also own the pistol, which I bought from his sister after he died.
    I gave one of my mates the early target rifle and another mate also has his 0.22 hunting rifle.

    Anyway, the 0.25 beast was incomplete with a wooden front grip as the only wooden bit. I think he may have given up on it as it had a tiny leak in the pipe that went from the screw fitting made to take a bsa 200cc bottle.

    The action has a VERY homemade look about it but knowing his pedigree I was happy to tinker with it. Iíve added a bestfittings quick fill so I donít have to remove the bottle to fill it and also made a new transfer port system which Martin had made to, Ahem, be either 11ftlbs or 18 .

    Itís now got a new single port and is running at 11.5ftlbs. I think the barrel is probably a BSA one as that was what he told me he favoured as they were easy to get hold of ( then ) and accurate.
    One of our club members when he saw it said it was so ugly that he loved it ( and both he and his wife compete in HFT/FT comps so they know their guns )

    Itís quite accurate out to 35 yards which was quite a pleasant surprise. Iíll try a post some pictures later.

    Norm

  7. #202
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    A quick pic I already had to wet your appetite ( or take it away )

    It has had some more mods since this pic, but it gives you an ideaÖÖ !

    Norm


  8. #203
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    now that's shed tuning
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.

  9. #204
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    Quote Originally Posted by Shed tuner View Post
    now that's shed tuning
    It certainly is ! I suspect from the design it’s something he started on in his early days of airgun building. I almost threw it away on several occasions, but just kept putting it back, promising to do something with it one day.

    I’m not really happy with the stock I made, I’ll probably make some thing all in one eventually, once I’m happy I’ve sorted the leak and it’s reliable. All Martin’s guns have the same type of cocking mechanism, where you pull a bolt back to load the pellet then cock the gun with a short bolt on the side.

    This one’s unique as all the others having a normal trigger layout the cocking bolt is pulled back till it locks, this one pushes forward as the valve he built into the cylinder works in reverse.

    It’s not the quickest gun to load and fire, you have to turn a knurled disc on top of the port housing, this releases the barrel which pivots in the middle, you load the pellet, push the barrel down and lock it then push the bolt forward to cock it !
    Not exactly rapid firing but it does work and is possibly completely unique

  10. #205
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    Quote Originally Posted by Shed tuner View Post
    now that's shed tuning
    Nah, that's "Shed Manufacturing"..

    Very distinctive and unique, Norm. And your relationship with the designer and builder make it a true keeper which must surely hold a special place.
    THE BOINGER BASH AT QUIGLEY HOLLOW. MAKING GREAT MEMORIES SINCE 15th JUNE, 2013.
    NEXT EVENT :- October 9 & 10, 2021...BOING!!

  11. #206
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    Quote Originally Posted by TonyL View Post
    Nah, that's "Shed Manufacturing"..

    Very distinctive and unique, Norm. And your relationship with the designer and builder make it a true keeper which must surely hold a special place.
    Yes itís definitely unique. Martin was a fascinating character and had a very varied life, he was a fountain of knowledge, not just with guns but also with nature and wildlife. When it came to airguns heíd always help anyone out if he could.

    I donít really know a fraction of what he did earlier in his life although I know he raced motorbikes, built handmade bicycles and did a lot of other engineering stuff. He also loved a pint of beer and constantly had home brew on the go !

    Norm.

  12. #207
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    No wonder you miss him, Norm. Not many come out of that mould and it sounds like Martin was a top, top man and a very special person.
    THE BOINGER BASH AT QUIGLEY HOLLOW. MAKING GREAT MEMORIES SINCE 15th JUNE, 2013.
    NEXT EVENT :- October 9 & 10, 2021...BOING!!

  13. #208
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    My completed 35k is now sporting a muzzle weight / cocking aid !

    Made by me after I found out how to stop the chattering when turning it and Iíve also learnt a new skill - power threading using a 1/2Ē UNF -20 bottom tap in the tail stock keyed chuck and the chuck run at 55rpm ( first time Iíve used the back gears )

    My good old 1945 Myford 3 1/2M series did me proud.
    The finish isnít as good as some of you expert Ďlatheistsí would get but I am improving, it would probably benefit from a good buff up

    I might even have a go at a silencerÖÖnow whereís those hair curlers and vacuum cleaner tube

    Norm


  14. #209
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    Oh, and she’s also wearing a Richter Optik 3-9 x 40 scope instead of the Nikko Sterling Mountmaster 4-12 x50 it came with as it felt too big and out of place on the 35.

    I must say I’m quite impressed with these little budget scopes, I’ve got the 6 x 40 on my Remy EC and that was what persuaded me to get one for the HW.

    The 3-9 x 40 did have to be reparalaxed but that was a doddle as the front lens cover is easy to undo and the lens thread isn’t glued or sticky. I did put a bit of black electrical tape over the join before I refitted the flip up cover though.

    The mildots are quite small but I rather have that than too big.

    Looking forward to setting it up and using it now

    Norm

  15. #210
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    Nice bit of turning there, Norm. Another skill to learn ticked off. The sky's the limit now.
    THE BOINGER BASH AT QUIGLEY HOLLOW. MAKING GREAT MEMORIES SINCE 15th JUNE, 2013.
    NEXT EVENT :- October 9 & 10, 2021...BOING!!

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