Jackson 1908 (Tas.)
James Holliday
"Motor Cycles, Motor Cycles, built of Rex parts. P. & R. accumulator; component
sets and parts. James Holliday, 199 Spring-st., city."
The Age, Melbourne, Sat 7 Feb 1903
This is the only record found, and it is not clear whether the brand name was James Holliday.
Source: Trove NLA
Jarman
Jarman motorcycles are referred to in various reports from 1905 to 1909. found in 1909
Both men are riding Jarman motors of 2¾ h.p., turned out by themselves in their own factory.
Motorcycle Racing NSW,
September 1905
Source: Trove NLA
Jelbart
Manufactured by George E. Jelbart, cycle agent, of Firebrace Street, Horsham, Victoria, circa 1910. The engine was of his own design. The firm later moved to Ballarat where his family produced traction engines and roadbuilding equipment.
A book on the firm was published by Norm Robb in the year 2000.
A Jelbart motorcycle was listed by Google AI (June 2025) as being built in New Zealand by a German immigrant in 1906. This false information has since been corrected.
Sources: Robert Saward, et al.
J.E.T.
Manufactured by J.E. Tilley of Tilley Bros. 63 Little Latrobe Street, Melbourne, Victoria. It is believed only a handful of motorcycles were built in the years before WWI.
Advertisements for secondhand JET motorcycles of 3½ and 3 hp appeared in 1911 and 1914.
Tilley was well-known for the 4-cylinder engine which powered John Duigan's aeroplane.
His firm also supplied Chater-Lea frames to Lennox Engineering.
Source: Robert Saward
J.J.
Saward reports that a used motorcycle of this name was advertised in Melbourne in 1921. Specification included a 9 h.p. engine and 3-speed gearbox.
Source: Robert Saward
JMC (Vic.)
Junction 1919-1921 (Vic.)
Rarer Australian Marques