I have a '70s Raleigh Sport and would like to change over to drum brakes. The problem is that my o.l.d. is 90mm and the Sturmey-Archer drum brake hubs are 100mm.

Any ideas? Are there Raleigh forks for the Sport with 100mm o.l.d or did Sturmey-Archer ever make a 90mm wide drum brake hub?

Thanks

Canflyboy