The renowned 'K3' racer was a
direct development of the 'F' type but, even with a
supercharger, more power was needed to compete in races such as the Mille Miglia.
The factory fitted wider axles to the 'F' type prototype
EX129, and production 'K3's
also used the wheelbase of the 'F' type, but the smaller capacity 'K' type engine was
more powerful with its cross-flow head and other lessons learnt from the 'C' type
The 'K3's success is well documented elsewhere but it is interesting to note that
Eyston's record-breaking EX135 - perhaps the most famous of all 'K3's - was called
the 'Magic Magna' when announced in the press! Richard
Seaman and Prince Bira both graduated from
'F' type to 'K3' ownership in
their
ascendance as racing drivers.