Granted I'm just guessing here, as I haven't root pruned, but I'd guess an oscillating multi tool would work well and might be better about not cutting into other roots behind the target cut.
Your axle setup will make a difference but we use a 50 ton with minimal issues. The only driveways I've seen crack are already extensively damaged, however he makes a conscious effort to stay off of the "dog ears" where a driveway ties into the street.
Lawns can be driven on when rock hard...
Thanks! I have a spliced version but I like how easy his is to build with available parts.
The scarab is great. Like @Evo I don't use mine super often. We did pull it out the other day for a climber to control a controlled speedline while I pulled the speedline to land in a tight spot.
Boomslang had a good video on YouTube of him using the scarab. I recall it, because he was also using a sling I had come up with for remote releasing limbs while solo rigging. I'll look for the link.
I have used it for light rigging, I can't recall if I used it for a speedline.
I really like how it doesn't introduce twist in the rope the way a figure 8 would and it doesn't require unclipping the device to thread the rope onto it.
I had considered the scarab, however I bought and use mine for rigging. It may work and is probably worth testing at ground level before buying a new one.
I appreciate the concern and I understand where your coming from on that.
In my scenario, your still tied into the crane until you reach where your cutting, lanyard in, remove crane tie in, cut. Tie back into the crane, lanyard off, place device in neutral. With the use of a lanyard your...
I'll look into that. Unfortunately the only arborist supply store around is a vermeer dealer with limited supply. They wouldn't have any of these devices in store to check out in person.
The verbiage is a little funny there, but between it and the video, they are saying it automatically locks your position when you let go of the lever (which is what all of our work devices do for trees) so that you stay put on the line.
I wondered if a device like this might be available in the rock climbing world? I'm not familiar with their equipment but I know some on here do rock climbing as well and might have some insight.
A munter would be enough for just the swing, however the goal is a separate system to transfer to for the cut.
Fly the ball, set the sling(s), transfer to the tree/pendulum and avoid long limb walks, pull the crane tie in and your ready to cut. The doubled rope slack is pulled out and ready...
I hadn't really considered that, since the whole time it'd be in neutral I'd be fully on the crane tie in, then I could engage it for the transfer into the tree where the device would function hands free to catch you.