Furniss, I really like the way you go about work and think you've pretty much got the ultimate small contractor setup, but not all of us have a lorry at our disposal. I could tip hardcore for free if I took it there, but there are costs involved in doing so. Time away from site, diesel, lorry costs etc. At 5€ to tip and 10€/ton for crush I'm technically earning 105€/hour at 7t/ph before running costs.
Now the counter argument for that is of course that you're gone maybe an hour on turnaround and come back with 10t? (cant remember what your lorry will take) on the back ready to tip and get back to work? Some sites might be close to the tip, others further away, but its hard to nip down the garage in 20 mins for a drink in my experience so I bet the average turnaround is 1hr.
In that time I'm 3t short of you but I haven't spent 150€ either. And we both have diesel & labour costs, probably about equal, and I don't have the lorry running costs.
Maybe I'm missing something really obvious that I haven't taken into consideration. I admit, its a bit of an experiment, but my maths going into this put me up at a potential £200/hr cost saving to me where I live. That's Doobin micro fancy tractor levels of profit! And it doesn't cost me anywhere near that to run the machine.
I know there's faster ways to crush material. And I know that above a certain number (I haven't quite worked out yet), its going to be far better financially to get a bigger crusher in and just load the b4st4rd. But I'm working with what I have here, trying to maximise profitability and appeal to customers in a world where doing it the usual way seems to only be getting more expensive and less reliable.