The railway also experimented with other forms of traction. It bought a 50 hp petrol-driven Drewry Railcar in 1927 to test its operating cost and reliability on lightly used branch lines. It was not successful and was sold to the Weston, Clevedon and Portishead Railway in 1934. Similarly, a Sentinel steam railcar was purchased in 1933 for use on the Devil's Dyke branch. It was transferred from that line in March 1936 and tried in other areas, but was withdrawn in 1940.