This small I/C engine was made from plate and  bar stock from the stock bin. It is an original design made without drawings. Principal dimensions were governed by available material sizes including steel bar for the crankshaft and cylinder barrel which dictated the bore and stroke. Also Myford change wheels.

The model was shown by Brian Rees at a Brighton exhibition.

Capacity 19.74cc

Bore 29.6mm

Stroke 28.7mm

Compression ratio 7.11

Max recorded speed 7500 rpm.