For sale is a Yard Machines petrol driven garden chipper. It has a 5.5HP, 4 stroke engine and is considerably more powerful than electric chippers. It was made by Yard Machines, a division of MTV in the USA. The chipper is about 25 years old but has had light service and starts and runs well. It needs a strong pull to turn over the engine.
The chipper has a large hopper that is used for most material such as hedge cuttings and brush.
You load the brush into the hopper and it is drawn into the flail at the bottom. Usually you need to push the material down and a long stick or branch is an essential extra. The chipped material is blown out of the side and a sack (included) can be attached to bag up the chippings. The main hopper copes with material up to 12mm diameter and there is a second narrow hopper which is for thicker branches up to about 25mm diameter. The chipper is easily wheeled to where you want to use it. I've attached a short video of the chipper in use to this advert.
Like all chippers, it works best on hard material such as hedge clippings and prunings from roses or fruit trees. It doesn't do well on soft, stringy plants which tend to get wrapped around the cutter. The main quirk of the machine is that it doesn't self feed well and you need to push the brush to the bottom of the hopper with a long stick. "Little and often" is the way to go - if you stuff the hopper and then push it down the flail will grab the whole lot and tends to clog. If this happens it is easy to open up the flail housing by undoing some hand bolts and remove the material.
The chipper is quite large and needs to be collected in person. It is about 180 cm long by 102 high by 85 wide so bring a large car or a trailer. Two people can lift it and I can help with loading.