The back story. You can skip this part if you want.
I'm prepping the house to be painted. The first thing to be done was clean it. So out came my trusty electric pressure washer. It's a great machine and has always done what I needed. Over the course of Sunday I cleaned the front of the house, removing loose paint and getting the mildew off the brick and siding. It was doing it usual good job, just slow. Move to the side, and the paint is in worse shape. Pretty much all of it needs to come off. The electric PW is doing it, but painfully slow.
Slave labor. 
This part of the house in under a monster oak tree. As you can see all the paint needs to come off. 
Forward to Monday, I price gas pressure washers to speed up the process. 
To get a good one you are going to spend big money. At this point I remember a monstrous PW pump I bought at an auction many years ago. I also happen to have a 6.5 HP engine still in the box that I had bought for a future project. What could be more GRM than to combine them. 
A couple of pulleys, two belts, and a piece of 1/2" aluminum plate and presto:
Total cost not including the engine $175. That was for the wand, hose, pulleys, belts, and necessary fittings. Northern Tool is your friend. I think the pump cost me $15 ten years ago. Total time invested, a little over an hour. I'm going to have to build a cart for it at some point. In the time I spent running it, it walked 15 feet across the yard. I'm going to have to stake it down next time.
In an hour this afternoon I managed to clean as much as I did all day Sunday. I also managed to blow a hole in the floor of my utility trailer, break the cats watering bowl, and make it necessary to replace the trim around one window. With the pinpoint nozzle in it will not only remove the paint from concrete, it will remove pieces of concrete as well. God that was fun!!!
Just had to share. It isn't often a throw together project works on the first try.
