welding front part 4

I made a pole to attache front derailleur. and cage for tire.

 The pole to attache front derailleur is made from 2 kinds of pipe which the diameters are 10 and 31.8 mm. Basically it is from just one pipe which the diameter 31.8 mm. This combination way is from Mike's python. But the idea is more flexible.
I made two slit to the bigger pipe to welding.

 Then sanding. Smooth finish is needed to attach front derailleur.

 It was attache to the BB shell. the front derailleur Sora FD-3400 made by shimano allows the angle is 61-66 degrees. I set it at 64 degrees. The grade is for biginner of riding road bike.

 Nice ! The smaller pipe wasn't welded at the center of the BB shell. but the bigger one's center is match to the center of the BB shell.

I forgot taking photos about making cage for tire.
Maybe next contribution, I will wrote about it.
Fini.