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Garvin
(@garvin)
Curator in Chief Admin
Joined: 3 years ago
Posts: 4676
12th December 2017 13:51  

Predom Lucznic Miscellaneous


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Garvin
(@garvin)
Curator in Chief Admin
Joined: 3 years ago
Posts: 4676
12th December 2017 13:52  

Walther LP53 vs Predom Lucznik - the "inside" details.

Courtesy of Leonardj. 

The following is an in-depth comparison of the Walther LP53 and the Predom Lucznik pistol that I documented back in 2007.
I'll be referring to the Walther LP53 as just "LP53" and the Predom Lucznik as just the "Predom" for the sake of simplicity. As the old saying goes, "the devil is in the details", well that is pretty much where the difference in these two pistols lies.

The LP53 was introduced in 1953, as Walther's first air pistol - the Predom came along almost two decades later. Published velocities in literature of the day, places both guns in the same ballpark, ranging from 300 FPS to 360 FPS for the LP53, and 300 to 355 FPS for the Predom. The LP53 weighs in at 2 pounds, 4.5 ounces, while the Predom weighs in a bit heavier at 2 pounds, 6.2 ounces. The difference in weight is likely attributable to the barrel/breech assemblies - the LP53 uses an alloy casting with steel barrel liner, whereas the Predom uses solid steel. Overall fit and finish of the LP53 is far superior to the Predom.

The powerplants are subtly different. First of all, the pistons and piston seals:

LP53
- 73.8 mm long, 22.7 mm dia.
- polished and hard chromed ID and OD.
- floating piston head with leather seal and synthetic buffer.
- Piston head is mounted to a short rod which is "keyed" into the piston.
- piston weight with head attached = 88 grams.
- piston stroke = 43.5 mm.
- sear engagement notch depth = 1.8 mm.

Predom
- 71.3 mm long, 22.8 mm dia.
- plain steel, with tool marks both ID and OD.
- Fixed piston head with leather seal and leather buffer.
- piston head is fastened to the piston with a screw.
- piston weight with head attached = 84 grams.
- piston stroke = 49.9 mm.
- sear engagement notch depth = 1.8 mm.

The mainsprings - both guns have dual, concentric mainsprings:

LP53
- large spring - 133 mm long, 18 mm OD, 2.5 mm wire, 24.75 coils.
- small spring - 127 mm long, 12 mm OD, 1.8 MM wire, 38 coils.
- both springs finished smooth and flat at both ends.

Predom
- large spring - 125 mm long, 18.1 mm OD, 2.4 mm wire, 21.75 coils.
- small spring - 130 mm long, 12.3 mm OD, 1.7 mm wire, 29 coils.
- both springs finished semi-flat, with tool marks, both ends.

The end cap spring guides:

LP53
- spring guide is 60.3 mm long, 7.9 mm OD.

Predom
- spring guide is 54 mm long, 7.9 mm OD.

The barrel assemblies:

LP53
- 240 mm OAL, 80 mm counterbore, 160 mm rifled.
- precision aluminum casting with steel barrel sleeve.
- Walther barrel - obviously.
- front sight is part of the barrel casting, and has interchangeable elements.
- rear sight is 2 piece, steel leaf with cast aluminum block for windage adjustment, interchangeable notch inserts.
- breech block - part of barrel casting, steel bushed pivot hole.
- breech seal - synthetic.
- barrel pivot bolt = 6.5 mm dia.

Predom
- 240 mm OAL, 89.7 mm counterbore, 150.3 mm rifled.
- solid steel.
- barrel maker unknown.
- front sight is solid steel, pinned to barrel, with fixed element.
- rear sight is 2 piece, steel leaf, with formed steel windage adjustment, fixed notch element.
- breech block - solid steel, barrel pinned in place.
- breech seal - leather.
- barrel pivot bolt = 5.9 mm dia.

And the triggers:

LP53
- early models had adjustable triggers, later models did not.
- equipped with anti-beartrap mechanism.
- trigger blade is 7.8 mm wide with longitudinal grooves, 25 mm long, with a 25 mm radius for the finger.
- the pins for the trigger, sear, and barrel latch are 3.3 mm dia.

Predom
- adjustable trigger.
- equipped with anti-beartrap mechanism.
- trigger blade is 7.8 mm wide, smooth faced, 21 mm long, with a 15 mm radius for the finger.
- the pins for the trigger, sear, and barrel latch are 2.9 mm dia.

The grip panels:

LP53
- more refined moulding, with thumb ramp on LS grip, steel screw cups set into the plastic.

Predom
- moulded plastic with chequering, no thumb ramp, no screw cups.

There you have it. The LP53 was the flagship introductory air pistol for the venerable Walther company, and reflects the quality,workmanship, and refinement that Walther had become famous for over many decades, both before and after the advent of the LP53.

The Predom is a rugged, well built gun that, while lacking the refinement of the LP53, still represents excellent value for the money, and should last a long time with proper maintenance.

 


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