1921 The original proprietors failed and so production was interrupted. Whitmee Engineering resumed production from the same premises and a better version of the model
appeared. This was listed in complete sidecar form. Both versions were given the option of all-chain drive as oppose to the belt drive used until then
1923 An all-electric model was produced. This had CAV dynamo lighting as
part of its specification.
1924 Three-speeds were offered, still with the final-drive option.
1925 Only all-chain machines were offered, and that was their final year.