I have the same bike, but what do you mean when you say brake hub? front or rear, the rotor?(disc) the caliper (the part that holds the pads on the rotor). I know for a fact that you must use a reputable brand of tool i.e. Snap-on or Craftsman, Matco and so on, becaue alot of tool makers can make them cheaper because the tollerances of the sizes are looser. I don't know where your trikes been, but if you use the right tool or breaker bar, you'll get it off. Heating and cooling the parts will have little effect when the parts are together because its hard to heat one and cool the other simultaneously. I guess I don't have to tell you that everything is metric? I know our Rs have a brake pad pin freezing problem, so if you do get them off use anti-seize when you re-assemble for the future. I am happy to help.
previous rides: 87 KX250, 86 KTM500, 84 XR500, 97 XR400, 96 RM250,96KX250,
97CR250, 98YZ400F, 2000YZ426F, 2003YZ450F Secondary: 02 TTR125, 03 Blaster, 02 XR50 Watercraft:SeaDoo XP787 Snowmobiles:87 indy Trail, (2) 88' indy 400s, (2) 89' indy 500s, (1) indy 500 EFI. (1) 93' 650 RXL, 02' RMK 800 and a 85' 250R