Thanks for your enthusiasm, but I'm still unsure if that is what I truly have. There is no chain guard with it, and with my limited knowledge of Schwinn bikes, I don't know if a Heavy-Duti is now what I own. If there is another way to find out, I would like to know. The way I guessed that's what it is, was by a photo on the net. It is the same red color with white decals, so that is the extent of my detective abilities to this point. Any other input would be great, Thanks alot.