zukahn1 

Here's something a bit different not nearly as nice as most of the above bikes but a well built and interesting example of a multi construction multi metal frame set Raliegh MT-200 has over sized 6061 alloy main Tubes bonded to OS unknown connection tubes welded to a 4130 chro-mo rear section with some interesting detaisl like cable stays integrated into bonding support rings and use black paint to oboscure the weld s and red anodized main tubes to highlight the bonding main tubes.