The rear seat pillow was a bid large compared with the rear fender

Fender was 90mm and the pillow was 110mm so it was looking Lomb, and that's something I didn't want.

How to solve such problem, I needed to add some volume at the rear so the seat would look proportional to the rest.

Needed a nice round shaped object to give it a 50's aerodynamics

It started his live as a Bianchi fuel tank.

After some cutting

After more cutting

First impression, not bad the length and rounding is good

Started on the rear seat construction

Giving it more strength

Cleaned - grinned - welded it all

Welded the tank on the rear fender

giving a nice 50's look

It almost mach the original rounding of the cardellino fender

50's aerodynamics