Dave Perry's bike is a good illustration of the plug-in dropouts...
http://www.bikecult.com/
So, my question is, how does the builder change the seat stay angle to accommodate the different sizes? FWIW I noticed this bike is a 55 cm and all 4 frames at the show were 55 cm.... All having that same angle! Do you think he has different dropouts for each size? (Hard to believe...) Or is the top "socket" brazed in place .... Inquiring minds want to know....
Dale Brown
Greensboro, NC