1896 The firm started to produce powered machines and, during an exhibition at the Crystal Palace, demonstrated a motorcycle fitted with 1.25hp Minerva engine. Approximately 250 people tried it out without mishap.
1900 The firm started using the MMC engine, with belt drive, hung from the downtube.
1904 Several motorcycle models were now in production and some had water cooling.
c1905 Trade was poor, so motorcycle production ceased.
When they entered the car business they used the name Bayliss-Thomas as there was already a Belgian car called the Excelsior. The prototypes had three wheels and air-cooled engines, but production vehicles were conventional 9-13 hp four wheelers and around 1000 were made.
1912 Spennell's lists them at Excelsior Works, Stoney Stanton Rd (Tel. 497) and manufacturers of motorcycles.
1920 A much wider range of models was introduced. That year they were incorporated as a private company.
1921 The firm moved to Kings Road, Tyseley, Birmingham, and started to trade as the Excelsior Motor Co.. The Walker family (father Reginald and son Eric) took over and after a couple of years, they dropped the original name of Bayliss, Thomas and Co.
1924 The company produced a 600cc side-valve single. Two more models were added with a 545cc Blackburne engine, one for sidecar work and the other a TT model.
A report from the 1924 Motor Cycle Show reads:
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