Please note that the forks on the Invincible Jap are an Australian copy of the Henderson set up so might help another Henderson owner somewhere.
The wheel is shown opposite.
This hub is far to wide but will provide the base and brake drum for the front wheel.
It was decided that we would fit Timkin Taper bearings, modern rubber seals and narrow the flange down to obtain the width required.
With the spokes remove (Bolt Cutters) the hub was narrowed and the smaller spoke flange bored to slip back on the centre of the existing hub's spool.
The bearings and seal diameters were turned in the same set up and the brake drum face skimmed to ensure concentricity.
A custom inner axle quill was made to fill in the gaps with new lock nuts and seal bearing surface nuts also machined.
Once all this was machined, we assembled the front hub and checked for uniformity (central latitude) between the front forks.
This is important as ideally we wanted the rim to be laced with Zero offset. (ie central to the flanges)
The three photos below show the hub in position and fitted.
The hub flanges were made to be central to the fork blades and this hub is basically finished with the exception of the brakes and rim.
This will be the basis of another blog.