For the record: Felt sells Sturmey-Archer drum hubs. Felt does not make a drum hub themselves.
That being said, depends on your fork. Sturmey-Archer makes the purpose-built front clips in 17.5mm or 22.2mm diameter. They make a 1" clip to, but that's more or rod bakes. If your fork is too fat for those, you can drill out the brake arm and use a seatpost clamp as Mikey suggested, or you can use a hose clamp. I've been running a Sturmey x-fd on a set of very fat Landing Gear forks for years now; no issues.
hth.