I do not recommend use of the Phil brake; we went around on this topic a few weeks ago. Not everyone shares my feelings on this, but it is my judgment that the design is inherently flawed, generally working until you need it.
On one level, the Phil uses the same 1.37*24 threading as most FW, fixed cogs, etc, so it can easily be hung on may hubs. However, there are other critical dimensions. For one, it should have proper clearance for the hub spindle, and Phil hubs had a grove to hold and o-ring that located the hub. And, I ran into at least one situation in which there was not enough clearance for the brake body, which rubbed against a chainstay. And, there are some special instructions for adjusting the critter.
harvey sachs mcLean va.
Bruce Thomson wrote: I just purchased my first Phil Wood brake hub for a tandem project.? I have no instructions and want to know if they only fit on certain rear hubs.? If only Phil Wood hubs could be used or if there were another compatable hub that is / was used.