AVT, we consider it a privilege to offer you the ultimate quality of
this Phil Wood cog.
Phil's track cogs are made from triple heat-treated, carefully selected
Stainless Steel. Phil's triple heat treating is an important part of the
process of bringing you the ultimate track cog. The first heat treatment
brings the the metal into a known, workable state and provides verification that
the material meets the high standards that Phil Wood demands. The second
phase is done after machining and stabilizes the freshly machined cog.
Then the final heat treating process hardens the cog teeth.
Phil Wood meticulously selects only aircraft grade material for their track
cogs. Very few grades of Stainless Steel qualify to become a Phil Wood
cog. The material is so good that it's the same grade of metal used in the
landing gear of jumbo jets.
Phil Wood’s stainless steel ISO track cogs are
available in 1/8″ and from 16 to 20 teeth. The cog threading is 1.370″ x 24 tpi.
In order to show that the cog is not plated, the outer
face of each cog is polished and laser etched while the inside face is left in
its “natural” state.
Phil Wood's commitment to the best materials, precision machining, and their
extensive heat treating process provides you with a world class track cog that's
strong, long lasting, corrosion resistant, and a component you'll be proud to
have on your bike.
Phil Wood recommends using their track cogs with
their track hubs, as they are machined to work together seamlessly. Other track
cogs on the market often have varied widths, sometimes resulting in a cog that
is too wide for the threads on the track hubs which can lead to less than
complete engagement of the lock ring and thread stripping from the hub.
American made in USA (U.S.A.)