Yes, those sets are all over the place, unfortunately those aren't the right brakes for my hub, not even close. Despite their advertising claims this particular hub seems to be known for having less than stellar brakes. I searched the Sturmey-Archer (SunRace) site to see if the hubs that use the brakes in the link were available for trikes as the brakes appear to be quite a bit larger than the TS-RC series but it I can't find where they have ever been offered in the trike configuration. I have half talked myself out of the rear hub swap to a 5 speed, I don't think it would ever see enough usage to justify the expense. Since the front brakes are 80% of the braking force I'll focus on upgrading the front V-brake pads for now and keep checking for the brake shoes for the TS-RC3 hub.