My understanding is that some Miyata frame was "glued" together, instead of welding.
I don't see any sign of welding on my frame. According to Miyata's technical report,
their adhesive is stronger than welding!
Originally Posted by TheBrick
Some frames have high tensel steel rear triangle and 4130 steal frount triangle but alu and steel mix sounds strange. From what I know you could not weld the two together (or if you can it must be very difficult due to the diffrent melting temps) but I may very well be wrong so if any one knows better let me know. Maybe it has a alu frame and steel fork? Good luck with the build post it up when your done.