the terrain I am after beating is only accessible by motorbike at the moment This site explains it much better than I could http://www.riders.org/default.aspx So really size is a major factor.
Its not really about what I want, but what will do the job best, so even though I have an idea of what needs doing improvement is always possible, always. I think the major downfall of the big trucks is the Size, weight and expense.
Propelled airship thats what you want
Tim Hayton
Some men see things as they are and say why - I dream things that never were and say why not.