I have two tandems (with different wheel sizes) and only one Arai drag brake. This kind of drag brake has the drum threaded onto the non-drive side of the hub and the brake shoes and arm are attached to a plate that gets installed on the axle between the spacers. The drag brake came installed on my Kuwahara Adventurer road tandem that has 27" wheels, but I also want to use it to tour with my 12-year-old son who is too short for the Kuwahara, so we ride around on a Miyata Duplicross that has 26" wheels. I have bought a second 26" wheel that has the non-drive side threading to install the drag brake drum, but I am stuck on how to separate its axle spacers to install the drag brake, because this hub's axle has no wrench flats. My local bike coop (which ha s the wheel as a donation) did not know. I am assuming it is some sort of press fit axle, but I am not sure how the nuts and spacers are removed (nor reinstalled). Help would be gratefully received.

I am desperately trying to upload photos of the hub, and will not rest until I succeed.

-Will