
Project started
October 2023,

In total Aad made 6 covers, 2 sets with
different types of aluminum and one steel set. The harder aluminum
type (the shinier ones in the pics) needed to be annealed, the
other two materials worked without any heat treatment. Next
was to drill the mounting holes and open up the center hole
to the correct size. |


After machining a nylon plug that fit
in the rotating table and clocking it to be exactly centered
under the Bridgeport we drilled 5 holes, 72 degrees apart, in
each of the six covers. We will be using the aluminum covers
for this bike (Aad's Knucklehead) and the steel sets will go
on Cadbike 1 (my Shovelhead) |


So, for the Knucklehead we needed a big
hole on the left cover where the drumbrake and sprocket are,
and a small hole for the right cover. This will cover the hub
which is way too modern looking for a Knuck anyway. For my Shovelhead,
which has discbrakes, we needed 2 holes of 111 mm |




As I write this the steel covers
are being powdercoated in the same light ivory as the rim. For
the aluminum covers we want to experiment with aging (ageing?)
the aluminum, so it is a good thing that we have a spare set!
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