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Thread: Interesting findings of Walther LP53 and Lucznik

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  1. #1
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    As I said, considering the rough condition of much of my LP53, 'proper' restoration isn't really a priority for me. I've been rather more cautious with interventions on my 1950's Webleys as they're in much closer to original condition. But with this Walther I'm not worried, it's actually been dropped a number of times, resulting in that barrel shroud crack (actually that one probably came from it being used as a hammer, as there's a deep dent along one edge of the spring cap showing it was smeared against another piece of steel, with force) and broken-off front and rear sights. I've made a new front post and adapted part of a rear sight to what was left of that, then painted the barrel shroud (which was worn down to bare zinc-aluminum casting with little black left) with an epoxy appliance paint, then baked it. The result looks a lot better than it did, but still, this will never be a collector piece.

    I happen to have a few dozen 2mm x 6mm O-rings, purchased as spares for my Brocock Atomic. The breech had two O-rings as it came to me, one about 1mm x 8mm, the other seemingly 1.5mm x 6mm, somehow both squashed in and gradually flattened through improper storage - I always store my Webleys breech-open for just this reason and my home made seals last a very long time, then I can make new leather and brass tube seals if ever needed. It turned out the 2x6mm rings fit perfectly. They leave a slight gap around the outside, but the inner seal is the important one and that's perfect, as a tissue lain across the breech when firing does not puff up in the slightest. 'Leonardj', an airgun repairman here in Canada, tells me that it just so happens that 2mm x 6mm is the correct ring, so my experience and his information coincide and it's all good.

    Not sure I'd want to shorten the shroud, but I'd like to see that result. What have you used to solder to the aluminum? Seems the rods for low temperature alloys from muggyweld.com would do the job, is that the sort of thing you've used? I'd like to file out then solder along the crack in my pistol's shroud just to have it un-cracked, though it seems not to be a structural problem. But I'm unsure about welding with such a finicky alloy. Comfortable enough brazing with steel, even the odd bit of stainless, but casting alloys tend to turn into a puddle if one isn't careful.

    The H&N pellets I have deliver the highest energy so no need to switch I think. They're 4.49mm, which works very well in my Pardini K12 pistol, so I have a fair number on hand, and they're quite a bit lower cost than R10 here.

    This is how mine has turned out. I decided last evening to glue on a ring of aluminum around the horribly disfigured end cap. It stiffens the rather soft steel. Might knock that off some day and turn down the ruined knurling and braze on a steel ring, but then again that's a lot of fuss and this aluminum tube section seems to be working nicely. Easy enough to hand tighten, and I've put a large O-ring under it to prevent the bottom plate from rattling a little.

    Oh, regarding the two-handed grip and stance... yes, I've tried that, but it seems to go against the grain for me. I'm used to the old-fashioned one-handed planar stance. From 10m AP competition. Shooting two-handed and with my chest facing a target just feels wrong, and the efforts I've made so far using that sort of shooting don't improve groupings at all, just because I'm bad at it. I'll keep working on a firm one-handed grip and see where it gets me.

    http://www.luthier.ca/other/forum/LP...3_finished.jpg

  2. #2
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    Sounds like a challenge your pistol .....let me help.
    Can you put your barrel up between centres on a lathe. After filling the crack and polishing down with 600 grade wet and dry paper.
    You could then go with the Birchwood finish and get a very close match to the original.
    For a rear sight the Weihrauch 35 rifle has a perfect match rearsight which is virtually identical and has the same hole centres. No machining at all ....just screws on. Available in the bucket load from Sandwell shooting supplies for a few quid.
    The foresight was epoxied on by Leonard when he did his fabulous K version. I tested the Araldite varieties i have available to me at work and suprised by the results.
    After 4 hrs often recommended ......Aluminium bars i tested on just pulled apart for fun.
    At 24 hrs tougher going but still not good enough.
    These tests on Utube and similar getting it wrong. After a week i couldnt separate the bars with a hammer.
    Epoxy needs time therefore........but it took me until after the completion of my project to accidently find this out after binning the idea on my earlier tests.
    I just lifted a section out of the scrap bin a week later after the completion of my work and tested it out of interest and wished i had used the glue and been more patient.
    No....i simply soft soldered....the alloy easily stands the 180 degrees for soft solder to flow with the aid of a drop of liquid flux applied to the base of the sight....actually used a very big Jointers iron with a tip the size of a chisel to get the localized heat there without having to resort to a flame....i watched the solder start to flow slowly wicking under the hairline gap between the sight and barrel.....did it both sides until a lenght of std 1mm core had lost about 15 mm of its lenght.
    I tested once cured and seems way strong enough.

    Your grip cap.....ive seen somewhere. An American spares site has them.
    Ill get back to you.

  3. #3
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    Well no need for the lathe I think, as there's nothing wrong with the barrel or shroud except for that hairline crack just where the web of casting meets it, coming up from the hinge pin. It's not moving at all in use, seems strictly cosmetic and to have resulted from some sort of impact rather than normal use. If I do get around to soldering it I'll probably modify that web of cast material just a bit so as to provide slightly less of a stress riser, tapering it more rather than the sudden angle the manufacturer left. Hand finishing down to level after filing it out and aluminum brazing isn't a problem, no need for the lathe there. I've got a friend who is expert in many types of welding, who may have the correct alloy and flux in hand (saving me the $50 or so for the kit), but as I said, perhaps won't bother as it isn't presenting any structural issue. The front sight problem was just the brittle aluminum post broken off. I made a steel one with a ring to go around the fixing bolt and problem solved.

  4. #4
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    harvey_s is offline Lost love child of David Niven and Victoria Beckham
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    The 24hr epoxies are much stronger than the rapid curing versions... I can remember an anecdote from Campagnolo Wheels who were supplying Bimota at the time with pressed aluminium wheels which were two halves stuck and also riveted together.
    They said that the rivets actually weakened their structure, but they were added purely because the public could not accept that wheels that were just 'glued' together would be strong enough.

    Modern engineering epoxy and acrylic adhesives used with the correct prep are serious materials in their own right rather than the bodging gunge our parents used

  5. #5
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    Quote Originally Posted by harvey_s View Post
    The 24hr epoxies are much stronger than the rapid curing versions... I can remember an anecdote from Campagnolo Wheels who were supplying Bimota at the time with pressed aluminium wheels which were two halves stuck and also riveted together.
    They said that the rivets actually weakened their structure, but they were added purely because the public could not accept that wheels that were just 'glued' together would be strong enough.

    Modern engineering epoxy and acrylic adhesives used with the correct prep are serious materials in their own right rather than the bodging gunge our parents used
    Yes you are right. The stuff i used was Black cure Araldite 2031 a professional bond epoxy for the aircraft industry available from RS....it would have been much easier to go with it.
    Its not so much the method but the darned clean up.....i was v lucky to have all my solder flow in under the sight and then just whipped around with a smear of the 2031 glue to fill the hairline gap....no clean up and no painting.
    Foresight inserts are available from Protek but i think only the tapered variety left.

  6. #6
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    Just like to say that this has been a totally great thread with lots of advice and shared knowledge. I have two LP53s - both mint and boxed with all accessories except the barrel weights. I have one of each brown and black grip versions and they both still shoot very well. I bought my very first LP53 back in the early 60's on a birthday shopping trip to the Army and Navy Stores in London, but like many things, it disappeared as I moved around. Apart from the scrawny-looking backsight, it still has the air of being a 'real' gun' - just as Walther intended.

    tac

    PS - if anybody here collects serial numbers, I can let you know by PM. I also have my raffle-prize Walther LG55 target rifle, too, but sadly the seal went just before Christmas, leaving me three shots short of winning a local competition.

  7. #7
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    Quote Originally Posted by tacfoley View Post
    Just like to say that this has been a totally great thread with lots of advice and shared knowledge. I have two LP53s - both mint and boxed with all accessories except the barrel weights. I have one of each brown and black grip versions and they both still shoot very well. I bought my very first LP53 back in the early 60's on a birthday shopping trip to the Army and Navy Stores in London, but like many things, it disappeared as I moved around. Apart from the scrawny-looking backsight, it still has the air of being a 'real' gun' - just as Walther intended.

    tac

    PS - if anybody here collects serial numbers, I can let you know by PM. I also have my raffle-prize Walther LG55 target rifle, too, but sadly the seal went just before Christmas, leaving me three shots short of winning a local competition.
    Good for you, despite some groans i actually like the rear sight. Ideally it should have had something like the Walther Olympic full bore weapon did, dovetailed in or screwed onto the Beaver tail receiver .....(already been there and done that many years back) but ive grown to like the one fitted.
    Try comparing it against many available on most air rifles and pistols and you will start to appreciate it more.
    At least its range of movement can cover all the extremes to shoot exactl to the point of aim with no aim off....i can think of loads that dont, incl. most Co2 stuff.
    Last edited by clarky; 08-01-2017 at 05:13 PM.

  8. #8
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    Having access to my Myford and Delrin bar stock is proving quite annoying. I just cant leave be especially at this time of year when spending more time indoors.
    Had to try this to catch the other end of parameter.
    Whipped out the Top hat altogether and turned up a much longer over guide guide rod.
    The thinking here is that the piston serves to keep the top end of the spring straight but to get maximum guiding all along the length left after the piston has moved forward.
    In otherwords maximum guiding no top hat.
    I got total ....and i do mean total vibration free shooting and the least jolt at the end of stroke.
    It resulted in marginally the tightest group sizes ive ever had from the gun but relying on just the little piston for weight, i got 438 fps avg.
    Some might go for that .....its an option ill offer to people if they want one.
    Last edited by clarky; 08-01-2017 at 05:29 PM.

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