BAYKO Product Details - 1939 to 1941

BAYKO parts were still made using BAKELITE and scarab powders - urea formaldehyde - but, by this time, plastic technology had advanced, enabling cheap, reliable, mass production of accurate colours to be moulded with greater precision.
This heralds a major period of change for BAYKO - indeed these sets bore the legend 'New Series' - unfortunately, as with so many things, the war severely disrupted this momentum.
These parts were superseded by 'New Series' parts
Earlier parts were superseded but still available, individually, throughout this period : -
'New Series' model
Left & Right Steps
Large Bases
Full Corner Bricks
Despite these reductions, the new range of parts was now significantly broader than earlier in the 1930s, and the range of possible models was much greater.
As well as the new parts recently [then] launched in the 20s series sets, a further range of new parts was launched, by inclusion in the 'New Series' sets : -
End Bricks - replacing Full Corner Bricks.
'New Series' new parts
Long Bricks and Large Windows.
The original Small Roofs were renamed Medium Roofs...
... and a new Small Roof was introduced.
Straight Steps replaced the Left and Right hand Steps and Platforms.
Also significant was the switch from large brown Bases to a new, smaller size, initially available in mottled green.
Because the size of Bases had been changed, the Base Links, and Screws also had to change.  The 'New Series' manuals actually specify the new Screw size as being 5BA...
Windows were [now] the more familiar 4-pane "cruciform" style rather than the 8-pane 'Georgian' style.
Wall Capping - discontinued or not?
Wall Capping was no longer included - or was it? They weren't listed on the parts lists but were shown on demonstration models included in the Set #6 instructions, and I believe 6 of each were included in that set, but not the smaller ones.
They were also mentioned as being included in 'Games and Toys' in September 1939 and visible in the 'Toy Trader' of the same date.
I've seen, and had reports of, a few sets now, and it looks pretty certain that they were included.
New Series Set 2
BAYKO was now available in sets #1 to #6 with conversion sets #1C to #5C also available. E.g. a #4C set converts a #4 set into a #5 set.
The red and white Bricks, red Roofs and pale green Windows and Doors colour scheme was maintained.
However, any set could be ordered in the 'Oak' bricks, white windows, mottled green roof format, until the war and these parts were also available separately.
During this period, most sets were sold in Red boxes, but there are plenty of examples of 'New Series' sets in Blue boxes...
...this was true regularly during the 1930s and 1940s, but I've no idea why.
The curved bay window parts which first appeared in the Special 20 series sets
BAYKO production ceased around the end of 1941 as the factory refocused on supporting the war effort.
These were the first standard sets to include Curved Bricks and Curved Windows and so this is probably the date when an information slip warning children to use them carefully and to locate the Rods correctly, was included with BAYKO sets...
Page 3 of the 'New Series' manual with the label explaining the lack of Tie-Bars
It's easy to refer to material shortages around the war as an assumed trigger for something which happened..., at least, is documentary proof that Plimpton did have to adjust the product to take account of material shortages.
This label was stuck over page 3 of a 'New Series' set manual and clearly states that replacement Small and Medium Floors were included instead.
By the look of this slip [right], which is almost identical to the label above, Plimpton slipped it into some, at least, of their sets just before the war finally put an end to BAYKO production.
The 1940 leaflet announcing the switch from Tie Bars to Floors
The label would only work for full sets, so the slip must have been used for conversion sets as there was no manual to stick a label in!
There was also a brief flirtation with Hollow Rods, around 1940, as a response to raw material shortages...
Front Cover of both versions of the New Series manuals
There are 4 main versions of the 'New Series' manual...
The first page of models from the New Series model cards
There was also a set of model plan cards...
You may want to know more about the full range of BAYKO manuals, if so...
If you would like information on the price of BAYKO sets during this period, click on one of the links below.
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