Faults:

I blew the top gasket several times.

A bearing in the rear wheel wore out

quickly.

The piston melted once. Then the cylinder was honed and a new one put in. No problems after that.

Small electrical faults have appeared.

General Comments:

The bike is very funny and looks like Donald Duck's car split in two and made up by a mechanic under the influence of psychedelic drugs.

That's what makes it fun. It does not look like anything else.

When it breaks down, it's very cheap to fix.

Great Fun Factor!!! It cost a small fraction of the price of my previous ZX 11, but is almost as fun..