bontai_Joe said:
The reason these machines need a LOT of maintenance, as mentioned above is the environment they run in. While grinding, they are subjected to constant intense vubration, especially if hitting stones around the roots. They are bathed in dirt and dust, the motors usually run under a heavy load and the cutters loose teeth. And this type of work requires new customers every day, because it's a once and done type of job. Even garden tilling has repeat business each year. I mention this because it is a hassle for any small starting business to generate new customers every day. Much easier to have a service that has repeat business like lawn maintenance, or gutter cleaning, or garden tilling, or house cleaning as examples.
Depends who your "customer" is.
My customer would be the tree services (but I would probably deal direct with the "paying" customer)
Our true hands on experience doing it, was that people asked the tree guy how to get rid of the stump. Tree guy either gives them a price (our case where we were running for him) or hands them your card. Most folks do not want to work hard to resolve these issues. As long as you are "fairly" priced, you will have all the repeat business (from the tree services) that you can stand.
As to the size of grinder, the machine we ran was a similar design to the one you pictured, but I think it was a 40 hp deutz diesel, and even then we ran out of power.
He traded that off for one that is a trailer in itself, let me see if I can find the picture of his new one.
http://www.tractorbynet.com/forums/projects/95654-al-bs-house-rework-3.html
Go to post 25, pictures of the new one "in action"
He definetely likes that style better.
Good luck, I agree with Bontai Joe in that a customer base is important, I think we disagree a bit, on who and how much repeat business you will get.
I will say that the day Joey was doing mine, 3 folks drove up and asked him to do theirs while he was out that way......
Finding the work was not the problem, charging enough to make the nut on that equipment while keeping it running is.