Welding BBS and drop outs

I really like Mig welding. But it has much stappa.

I started welding iron plate with hole.



Next, I welded BBS.



It isn't easy to check balance.



I tack welded with cranks and iron rod.



Welded.





Out put voltage low, I think.
The obvious side,



Not so bad.

Then, I drilled for steering rod.









In the last drilling, the hole is in plate leads drill. We can get a hole at very right position.

At last, I welded drop outs.








I needed brushing my welding skill much more.

Fine.

Welding rear folk to center frame

At first, I made slit on the surface of center rectangular by handy disc grinder.



This time, I use second hand front folk for BMX as rear folk.
The folk was inserted to center rectangular.
Now welding !



The welding wire has flux. So after welding, the welded part looks white.



Brush, brush the flux.
But many stappa leave there.



The part of back of steering plate was cut to bend at 133 degrees.



Then, it was clumped and welded.



There were many stappas around of welded part.
I use chisel and hammer to clean them.



The rear and center as a part of main frame.



I made some slits on the rectangular for the front part.



I had a mistake. A slit wasn't needed ! I welded it.





Then, bend.



I noticed the sketch to fit the angle of bending was wrong.
I wrote it again.



Tucked at needed point and support metal sheets were the both edges. I attached some parts for front part.



Welding ! I welded it from toward where welding becomes easier.



Not bad. I need brushing and cleaning.
At last, I welded two small plate at inside edges.

This time, my welding stuff is so speedy with no gas mig welding machine. I need brushing my welding skill more.

Fine.

Making drop outs and welding steering part to center frame

I made drop outs from iron sheet which thickness is 6 mm.
At first, cut them, then drilling.



I use metal lathe to drill.



These drop outs for single gear.


The slots were made with handy disk grinder.



Next, I cut two plate, then drilled and tapped at the center.





The rectangular was cut.





Then, the plate to attach rod end was welded to center frame.



Mig welding machine was used.



Fini.

Fitting rear fender.

The rear fender isn't fit to the rear tire. I had thought using 451 wheel. But now I can decide 406 is enough.





I cut some stays too be short and the other stays got slit to bend.



I use mig welder.





Then, I rode it. I felt a little less resistance of air and top speed was 47.2km/h on flat road.
The stability becomes unstable, coz the seat bend more.
I'm going to train to control it.



Fini

Making my third python

I started making my this python from yesterday.
This time, I use some parts from donor bike.
At first day, I cut some parts from metal sheet.







Next step is drilling.