getting some problems.

I found some problems.
One is Banana of V brake. When I turn to the left deeply, the banana touches the Pivot shell and the banana's form is changed. I changed the way which the wire pass. at least I should use 90 degrees or flexible Banana here.

 The other one is about pivot. The bolt is tied enough, but after riding, it can be tied more. Maybe Bearings's form changed.
I made spacer which length 27.5 mm inner diameter 12 mm outer diameter 17 mm.
and I put it between of the bearings.

I have tried to ride longer distance with my second python.
yesterday the front tire got damage and I repaired put patch on the tube.

Fini.