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Hayes-Pankhurst of St Leonards-on-Sea
1913 Cayenne was a motorcycle produced in 1913. In 1913 two Cayenne machines were entered in the TT. They both had 499cc 3½ hp engines, but one failed to start and the other retired on the first lap. They had water-cooled engines with ohv and the rockers were set across the cylinder head to run from the push rods to the vertical valves, mounted in a detachable manifold. Twin exhausts faced the rear. The cylinder jacket was corrugated and a similarly formed radiator was mounted ahead of it. The forward magneto was driven by a silent chain.