Ideally suited to estate life, the TWPTO/100G has a low-centre-of-gravity, easy-tow, slow-speed chassis. You cannot take it on the road, but you do not have to use the tractor's three-point linkage.
Power can be taken from a compact tractor between 18hp and 40hp, with a six-spline 540rpm PTO shaft. We use a small Kubota and find the combination makes a good match for towing over uneven terrain, as well as for chipping performance.
This chipper has a large, high in-feed funnel. There are no feed rollers, although the edge of the blade and angle with the anvil do create a draw to pull in the material. You have to be prepared to trim material and lift it to the machine. It is also important to understand that you are the no-stress device.
"Ouch." One of the testers feels the vibration and whipping coming back up through the branch. Townsend finds that feeding smaller cuts, no longer than 2m, helps reduce vibration. "You haven't got the roller to control the in-feed - you feed it as and when. You have to be a bit more interactive with this machine, although shorter material can be thrown in and you can walk away," says Townsend. Jane adds: "The bushy stuff is a problem. It catches on the chute."
We find the chipping capacity is easily 3in and it will do 4in depending on the material. Townsend concludes: "If you haven't got the budget, this is a solution. It's ideal for estates and parks."
Max diameter infeed: 10cm (4in)
Tractor requirement: 18-40hp
Feed method: Positive blade feed
Blades: Two 177mm (7in) fully hardened
Throughput: Up to 1.5 tonnes per hour
Expect to pay: Around £3,900 (trade)
Tel: Timberwolf - 0845 686 1037
Tested This Week
Inspected This Week
Bandit 250XP PTO
The Review Panel
Scott Barrett, student craftsperson, Westonbirt Arboretum
Tom Dewey, arborist, Westonbirt Arboretum
Andy Jane, tree team operations co-ordinator, Westonbirt Arboretum
Richard Townsend, tree team supervisor, Westonbirt Arboretum
Greg Wright, apprentice arborist, Westonbirt Arboretum
While most arborists will be looking for a self-powered woodchipper, and most likely one that can be towed on the road, there are occasions when buying a machine with an engine simply is not necessary. Especially useful for estate work, a range of power take-off (PTO) units is available in the UK.
Arranging a test of anything driven by tractor PTO is fraught with problems. Often it is this type of machine that is least available for demonstration. The right-sized tractor must be on hand. Then you must offload the unit and get it working with the tractor.
With machines from TS Industries and Hardmet Landforce being unavailable on test day, and Greenmech's new PTO chipper a couple of weeks away from completion, we greeted Bandit and Timberwolf to the test site at Westonbirt Arboretum, Gloucestershire. Conditions for the Bandit were warm and sunny. Temperatures were cooler, but it remained dry, when we tested two machines from Timberwolf.