Hey everyone, I have an odd ball schwinn heavy duti that I am just curious about. I got it in a trade for 2 bmx bikes I had. Its exactly like the frames that are sold on here by indz but it has cantilever brakes front and back, a rear derailleur and a 3 piece style bottom bracket. Its red in color and is original paint by all means so they were added on after the fact. Does anyone have any clue on where it could have come from? I dont have any pictures of it readily.