OK, I start with a set of U bends. I have these for sale, different sizes available. If interested e-mail me: firstname.lastname@example.org
These ae the tools I use when working with pipes.
For a staright cut I use a piece of cardbord like this, then just trace with a marker. Then cut following the line, easy or what?
I usualy start on the front cylinder.
This depends on the design of the pipes, on my bike it just performance that rules.
When you have front and rear cylinderpipes this far its time to start on the colector.
Here is much magic in this colector, these are not easy to make.
Here the pipe is ready, time to make the brackets and muffler. Will post pics on that one soon.