ESO 250 Single
Miloslav Soucek used this desmo-machine in the 1962 Swiss GPSource: MOTOR vol. 49. issue 16. april 20, '62. ESO is the Czech word for "ace".
Source English article "Big-Track Eso desmo": Motor-Cycle; 15 Nov. 1967: Vol. 119, No. 3361
De Desmodromische E.S.O. / G.K. in: Motor; jrg. 49, 20 april 1962 no 16 p. 365
1960-1962 Prototype of Motorcross motorcycle "ESO" MC250 with desmodromic engine.
January 2012 Massimo Clark revealed the colour pics of the desmo-heads.
The sliding camfollower body very much resembles the Czech Karel Horal system. Not a radial valve type engine, but a "simple" two valve desmo system.
http://speedwaybikes.fortunecity.net/esojoli.htm
The type of desmosystem used is still unkown to me to this very day.
[Classification = Possibly a group4 system]
back