Click Here to get Started with Bayko The Bayko system

The Bayko system consists of a selection of architectural components which are slid down a framework of steel Rods inserted into a Base perforated with a matrix of holes. The Rods are arranged to form the basic outline of the building, and the components are held in position by grooves down each side. Components consist of Brick panels, Windows of various sizes, Corner Bricks, Doors, Pillars, Fences, etc. A selection of Roofing and ornamental components is also provided to complete the buildings.

Illustrations showing basic Bayko components and their method of use

A Short History of Bayko

My main interest is in Bayko from the 1950s and 1960s. I do not claim to be an expert on Bayko history, particularly pre-war Bayko. However, I have put together a short Bayko history for those interested.

The Plimpton era (1934-1959)

Although patented in 1933, it was not until the end of 1934 that the first Bayko Building Sets were ready for sale. Delays were caused by initial difficulties in working with the new material. For instance, the Bases would often warp during cooling, and it proved difficult to achieve consistent colours. The reds in particular would often turn out in various shades of brown!

Five sets were initially marketed (sets 1-5) followed by conversion sets (1a-4a) to convert each set to the next one above. Bricks were red and white, Bases were brown, Windows dark green, and Roofs a dark maroon colour. In 1935 a set of "Ornamental Additions" was produced, and also a deluxe set 6 which was much larger than the set 5 and contained many of the new ornamental parts, such as Pillars, Arches and Capping pieces. Set 6 also had a distinctive colour scheme with white Doors and Windows, green Roofs, and bricks in a mottled brown colour, referred to as 'Oak'. Further new ornamental parts and sets were introduced in 1936, including Curved Bricks and Windows, Turret pieces, and orange Dome and Pinnacle Roofs. In 1938, the No.6 set was made available in standard colours. This led to the introduction of a 5a set, to convert the set 5 into a set 6.

1935 Oak set 6 model

1939 saw the introduction of End Bricks (which replaced the old Corner Bricks), Long Bricks, Long Windows, and smaller green Bases. The existing outfits were replaced by a new series of 6 outfits which incorporated the new parts. All the outfits were now in a red white and green colour scheme, although white and brown parts were still available as spares.

After the war, the existing series of outfits was replaced by just three: sets 0, 1 and 2 and conversion sets 0x and 1x. This was to be the start of the classic Bayko period that most people remember. A set 3 and converting set 2x were introduced in 1947. The colours were now standardised, with red and white Bricks, dark green Bases, red Roofs, and green Windows and Doors. Right: Selection of classic Bayko parts

In 1949, many new parts were added to increase the realism and flexibility of the system. These included Short Pillars, Crazy Paving, Fences and Walls, Side Bricks and Side Windows. The latter enabled the construction of rectangular bays topped by the new Gable Roof. In 1950, Opening Windows and Gates arrived. In 1951, a large set 4 was introduced which used all of the recently-introduced parts. This was accompanied by a 3x converting set. Left: Small selection of the new early 50s parts

Bayko had now come of age, and the fifties was a very stable and successful period for Bayko, with full order books and very few changes to the system, the outfits, or the manuals. Up to a million sets were produced during this period and exported all over the world.



Large block of flats made with 50s Bayko The next changes occurred in 1957 and 58, with the introduction of opening Garage Doors, Ramps, and TV Aerials, although no plans were published which used these new parts. The Windows were also modified to allow transparent glazing material to be fitted. At the same time comes evidence of a downturn in Bayko's fortunes. Windows and other parts were now being produced in cheaper polystyrene as opposed to the more expensive Bakelite. Bayko was now coming under pressure from new products, such as Lego and Airfix building sets. Faced with falling sales and increasing competition, Margaret Plimpton (who had taken over from Charles after his death in 1948) retired in 1959, and sold the company to Meccano Ltd.

The Meccano era (1960-1967)

Upon the aquisition of Bayko, Meccano Ltd. transferred all production to its factory in Speke and set about updating the system and redesigning the outfits. Now, all plastic parts would be made from polystyrene, and the colours were changed to grey Bases, green Roofs, and yellow Windows and Doors. Most of the decorative parts were dropped altogether, in an attempt to rationalise and simplify the system, although all the new 1958 parts such as the Garage Doors were retained. The expensive and cumbersome one-piece Roofs were replaced by much simpler flat Roofs and matching Roof Ends, which were cheaper to manufacture and able to be packed flat in the outfit boxes.

Advert showing the new Meccano-Bayko colours

Four sets were initially introduced by Meccano. To avoid confusion with the Plimpton sets, the new sets were numbered 11, 12, 13 and 14, with 11c, 12c, and 13c conversion sets also being marketed. The new sets were based on the existing Plimpton sets 0 to 3, and although the manuals were totally reprinted the models were really only revamped versions of the old Plimpton models. A few dated models disappeared, and were replaced by more modern buildings, such as a Heliport which took advantage of the new flat Roofs.



Attractive outfit 15 model, showing the new parts The first Meccano Bayko sets were on sale by Christmas 1960 and, due to the cost-cutting measures, were selling for a much lower price than the previous Plimpton sets. The product was supported by Meccano Magazine, and initial sales were encouraging. In view of this, Meccano decided to introduce a new range of decorative parts in 1962. Instead of re-introducing the Plimpton parts that they had discontinued after the takeover in 1960, a completely new set of parts were added. These consisted of a new Dormer Roof assembly (which would have been impossible with the old Plimpton-style roofs) opening French Windows, a large Shop Window, Pantile Roofs, and a selection of decorative Roof Ends. These parts were all included in the new outfit 15 and the 14c conversion set. The model on the left shows many of the new parts, including the Dormer Roof assembly.