THE ENGINES
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The evolution of the various Ydral engine blocks
Ydral mainly manufactured 2-stroke engines
Twin-tube engines from 1947 to 1954
125cc Twin-tube
right-hand intake
175cc Twin-tube
rear intake
right-hand
125 "Ydral Sport"
175cc Sport
Paul Vallée 1953
Engines with a single exhaust ‘monotube’ until 1958-1960
125 cc Single tube
right-hand intake
175cc single-tube
with square cylinder
Advertising 1954
Moto-Revue
A horizontal engine with 2, then 3 gears from 1957 onwards
horizontal 125cc engine
The 250cc Ydral
(125/125 twin)
Le 300 cm3 Ydral
To find out more about
engine blocks, see the
the chapter in the book ‘Lardy-Ydral productions’ pages 41 to 80
CONTACT AND ORDER
csbouillard@gmail.com
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