Robert Francis Duckworth (25 August 1929 – 1 November 2023) was a New Zealand international motorcycle speedway rider.
He moved to England in 1951 and joined the Belle Vue Aces, but only made four appearances in his first two seasons with the team.
[4] The Belle Vue promoter Johnnie Hoskins paid £2.10s for his transfer from St Austell, and gave him the nickname of ‘Fifty Bob’ Duckworth.
In 1964 he finished third equal on points in the New Zealand Speedway Championship but lost the runoff for third place to Bob Andrews.
[9] In 1961 he qualified for the British semi-final of the World Championship but was injured during the meeting at Southampton in August and had to withdraw.