This pedestrian machine is self-propelled, with the hydrostatic transmission allowing infinitely variable ground speed control - no struggling to get to work.
Once we have the SP2010 lined up with the stump, we find the controls are relatively simple to master, though it takes a while to feel comfortable holding the operator presence control or dead man's handle - use the movement controls and then engage the handbrake. Goulbourne needs another hand for a moment but is soon happily swinging the head to and fro across the stump.
The fingertip controls are comfortable and efficient, and the machine feels as though it has power to spare. But the best feature for Goulbourne is the adjustable handle height. "It means you can lower the head into the ground and still be comfortable standing at the controls," he says.
The 0.5in (12.7mm) cutter wheel works well at grinding the stump. This one will work down to a depth of 24in (61cm). But the lads at Westonbirt are hard taskmasters. They still want more. "There is still stump down there," says Jane, peering into the hole.
We finish work and switch off the engine - pop! Oh yes, this stump grinder has a Kohler engine.
This is quite a heavy machine and certainly well engineered and solidly built. That gives us the confidence that it will not only do the job but should also stand the test of time working in harsh environments and being repeatedly loaded and unloaded from a trailer.
Engine 30hp Kohler Command
Cutting wheel 19in (48.26cm) diameter, 0.5in (12.7mm) thick, with 16 teeth
Cutting depth 24in (61cm) below ground
Cutting height 27in (69cm) above ground
Dimensions (LxWxH) 234x74x117cm
List price £6,995 + VAT
Contact Carlton Europe (a brand of Orange Plant) - 0191 236 7795.
Tested This Issue
Carlton SP7015 TRX
The Review Panel
Dan Goulbourne, trainee arborist, Westonbirt Arboretum
Andrew Jane, operations support officer, Westonbirt Arboretum