Jack Shaft 3/4" OD x 4-7/8" Over all length. Has 3/4-16 right hand threads.
Works with 1.375 x 24 Right hand thread freewheels.
Note: This is for the jack shaft & 3/4-16 nylock nut ONLY. Any other parts you need must be added to the order.
The two flats are cut to help remove the freewheel. Place the two flats in a bench vise or hold with a 15 mm open end wrench.
Used to get reduction and / or move the drive more towards the LEFT of the driven freewheel.
Support this with 3/4" Bearings or drop out of a bike. You can add a solid sprocket or place a freewheel adaptor or use a Three prong sprocket / adaptor and freewheel.
The 3/4-16 threads with nut will act as a safety to hold the sprocket on and retain the key if the set screws come loose on the sprocket or pulley.
