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Mladost(1) Construction Sets

Mladost(1) is a Meccano-like system. It was made in Bulgaria, from the late 1980s into the 1990s.

Manufacturer / Distributor

Fabrika Vasil Patlishkov, Bratisgova, Bulgaria

Info from the Metal Constructional Systems Database for MLADOST[1]

V. Petleshkov
System Type
Hole pitch <12.7mm
known in 1989 to 1990s
M4; M3 (see comment *1)
Boss Type
Boss Thread
Diametrical Pitch of Gears
32 (see comment *2)
No. of Parts in System
71 (see comment *3)
Hole Pitch (Spacing) (mm)
Diameter of holes in Strips(mm)
4.3 (see comment *4)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
3.6 (see comment *5)
Types of Nuts and Bolts
Nuts: hexagonal
Bolts: pan (slotted)
Material/Finish of Nuts and Bolts
Steel with a Brass finish
(see comment *6)
Size of the Nuts across Flats (mm)
7.0(see comment *7)
Bolt diameter (mm)
7.0(see comment *8)

Wrongly MOADOST in MCS. Parts for theme sets/models, first thought like MERKUR.. *1 A few M3 N&B. *2 Mod .8. *3 At least. *4 Some ≈4.8. *5& 3.5, later? *6 8mm Bolt: FW. M3: Nickel plated steel. *7*8 M3: 5.0.

The MCS document for this system is shown below. It can also be downloaded to your computer if desired here

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There are currently no manuals, leaflets or photos etc. available for downloading. If you can supply any, please get in contact with me.