Box section chassis's

[Eventorizon]

Look at Beauty 2... thats a great example of a chassis design, but it is a very elaborate one

[shakesc]

I have a unibody machine but provision for bolting on HDPE for impact protection

[PJ-27]

We made Bitza Mk1 and 2 out of steel tubing, which meant bolt on armour and very strong.

But it was just so heavy, plus there's a huge lack of mounting options for internal components.