Now we're talkin'. That frame will build into quite the b!tchin' bike. It's kind of hard to tell from the pictures, but does it take a mid BB? Are you going to run a rear derailleur?
YUP.In crude laymans terms Its kinda like a BMX style BB30(different sizes though,same concept), but BMXers we're ahead of the game years back.Vlad said:A mid BB is a cupless, press-fit BMX bottom bracket. It's basically an American BB minus the aluminum cups that the bearings sit in. They press relatively easily into a specific BB shell.
Hmmm, I see that now too. I assumed the first time that it was a plate that was cut and radiused that way. But I could see what you're saying too.dr.welby said:How'd you form that seat tube / top tubes interface gusset-y thing? Looks like two pieces clamshelled together?
Dimple die. That's what I thought it looked like, but I had no idea what the darn tool was called. Very slick.blue.RACCOON said:Like the dr. guessed, there are two plates welded together and the weld was ground off. The plates were formed using a tool called a dimple dye, which is basically a male / female stamping tool that rolls a lip around a whole.