Harley-Davidson 1923 Model “J” 989 cc IOE V-twin frame & engine # 23 J 10566
It took the Harley-Davidson Co. about 12 years to develop their motorcycles from a single cylinder belt driven single 3 HP machine to the 45 degree V-twin with 3-speed countershaft gearbox that was marketed in 1915.
This sturdy 989 cc (84x89mm) machine became a popular choice for motorcycle buyers all over the world, private enthusiasts as well as police forces, postal sevices and other government bodies.
The OHV inlet, side valve exhaust concept was used till 1930, when HD chose the full sidevalve engine concept.
The 1923 range basically consisted of three models; the 600 cc flat twin “ Sport” and two V- twins of 1000 and 1200 cc capacity.
Some new features for the 1923 V-twin models were the “Staylit” shock- absorbing taillight , the roller bearing rear hub and a larger size generator.
The machine has two brakes that work on the rear wheel, an internal expanding one and a contracting band construction that works on the outside of the brake drum.
A peculiarity in design is that the brakes cannot be applied together, the rider has to choose to use either the toe pedal or the heel pedal. During the year 4802 Model J machines ( with battery and coil ignition and electric lighting) were sold.
This “J” has been restored a number of years ago and is a fantastic runner. It’s very complete with electric lighting, Weston amp gauge, claxon and Johns Manville “ Harley Davidson” speedometer.