This engine was developed by ourselves for George Beale Motorcycles. It has proved very successful in the hands of Sandro Baumann who won the 2001 Inca Championship
| STD SPEC | SPECIAL SPEC | |
Borex Stroke C.Ratio Inlet down draft angle Valve angles |
90x78 11:1 12 deg 74.5 deg |
92x75 13.5:1 25 deg 53 deg |
Comparison of original rockers (TOP)
with special short rockers (Bottom)
Early prototype narrow valve angle head
Flywheels are manufactured with integral shafts, hardened then fully ground