He then spent six months riding in the United States , defeating motorpaced champion Franco Giorgetti , George Chapman , Charles Jaeger , and Francesco Zucchetti .
In 1929 Lamb won the Austral Wheel Race .
Lamb then spent six months riding in the United States , defeating motorpaced champion Franco Giorgetti , George Chapman , Charles Jaeger , and Francesco Zucchetti .
In 1929 Lamb won the Austral Wheel Race .