just a quick one. need to order steel tube for chassis this week.what is the spec for the three quarter and one inch tube and what length of each wil i need to make a start . wil be doing a book build but waiting for book to arrive. ...thanks ade ...

You're obviously trying to beat MikeR's record then.
6 years from registering just to buy the book!!!

depends what youre building.

There is a Bill of Materials and schematics that will tell you everything you need to know.