Even easier, 1-piece solution I've done in the past, is simply drill a 1/4" hole approximately 1" deep into the bottom of the fuse. Then, get some 1/4" dowel, cut to depth of drilled hole, and file/cut a notch on 1 side for the tail wheel wire. Wire is 1/16" with a very short "L" bend at the end (to hook over end of dowel - you did make the notch on the end of the dowel, too, didn't you?) and however long it needs to be for forming the rest of the gear.
When ready, simply mix up some 5 or 10 minute epoxy, smear it all over the dowel and shove some in the hole, place gear in the notch, and shove the whole thing into the hole. Make sure the tail wheel is oriented properly, and let the epoxy cure. Takes longer to explain than to do. Super simple, easy, & cheap. Only drawback is that it is permanent.
Edit:
Can also use furniture dowel pins. Can get them from McMaster-Carr, 100 for $4.20.
https://www.mcmaster.com/97195a416