FirstFlight
Senior Retro Guru
Mr. Zero":1ahriing said:As I'm sure FirstFlight will tell you those lugs aren't really lugs at all, but sculpted fillets. It's my understanding that not many of that type of frame were built.
Very sweet!
I have heard them referred to as a bilaminate lug. Basically the pointed piece ("Lug") is a sleeve that is brazed over the frame tube and then the whole thing is fillet brazed to the adjoining tube. I guess this could be considered as a form of double butting or a really big gusset?