I have the original 27" wheels on my Schwinn World Sport FG conversion that would be ideal (and cheap!) for a Miyata frame I want to build up as a geared bike for my niece, now that I have a flip-flop rear and front hub + new rims to lace up for the fixed gear. I'm trying to keep the cost down. Otherwise I'd just buy hubs & rims.
I rotafixed the cog with red Loctite. I understand that it takes 500deg F to break the bond. Has anyone tried this with a heat gun rather than a torch? A heat gun would seem to be a bit safer and have less risk of overheating the cog or hub.