30 Oct 2014

Making jig for welding front part

I have never used jig to make python. But this time,I need it.

That's simple construction. Rectangular pipe has screw and angle of 90 degrees.






Then set front parts on it.





After taking, I took off the jig and welding. I should not do it.



My welding becomes better.

I set the front part to the jig. Then I noticed it lost balance.

The center of folk and BB isn't much and a edge of the BB was high than the other one.
I thought about solution. At last, I cut the narrower pipes then with cramping BB and front fork, I welded them again.


Next task was welding pipe for front deraileur on the BB.

Around here, my welding didn't work well.

I welded two pipes between the front fork and the pipe for front deraileur.

This is front part. To check the position of handle, I need welding rear dropouts and making seat.