With Bayko Sets as with the History and the Parts section will will take the sets in Chronalogical Order using the 3 basic periods:-
1934-1940 Pre War Sets
Charles Plimpton no doubt during his time in the sanatorium, had in preparing his plans for marketing Bayko no doubt looked at other construction toys that where on the market at the time. One which will have interested him was made streets away from where he would have his own factory in Liverpool, at Binns Road Frank Hornby had already made his Meccano Sets for about 30 years.
Hornby's marketing plan was to put a number of Meccano pieces into a set which would become the smallest set in his range. The range would grow by putting all the pieces in the smallest set into the next set up along with some extra pieces up until the largest set. In that way the user could make any models in the set he was using and any models in any of the smaller sets, it also meant that Hornby could market a range of Conversion Sets that could be bought the contained all the extra parts that where needed for the next largest set.
Charles Plimpton followed this principle with his Bayko Sets. In Decenber 1934 the first Bayko Sets where launched numbers from Set 1 (the smallest) through sets 2, 3 & 4 to the largest set 5.