Ryan'smilling
Addicted to ArboristSite
Thanks. Indulge me with this reply to flesh things out a little more as summary advice can be dangerous.
1. Weighed throw line - had one and used it. As others have pointed out to me climbing or a device to put the throw line higher may be necessary.
2. Backcutting below the face is a judgment call - risk to cutter versus other risks.
3. My errors were multiple. Cutting on the spur of the moment as a favor; not appreciating the differing characteristics of this species; taking on a challenging tree with little experience with the species; underestimating the limb load (the tree was straight); taking a short cut due to lack of equipment (if I had cut the limb off all would have been well, but had no way to reach it as it was on the bank side); thinning the hinge too much; too low rope; inadequate equipment for the job; and stressing the hinge with a tug. Probably many more misjudgments.
4. No anchor points available - sole tree of size on a bank in the edge of a field. I always pull from the front of the truck. Better view and more weight in front unless of course you have a loaded truck.
Ron
So you used a throw bag and line to set your bull rope in the tree, but couldn't get it high enough? I'm just trying to understand. The way it reads to me I can't tell if you used a weight on your bull rope or a weight on a lighter line and then pulled your rope up.
The only risk to making your back cut lower than your face cut is that the tree could slide backwards off the stump at the cutter. Really that's mostly an issue if you're felling a tree uphill. It does also make it a little more difficult to make your hinge the right thickness. Having the cuts at the same height makes it easier to judge. Making the back cut lower is a good technique to use when you're pulling a tree over, especially if you're pulling from below the center of gravity.
I wasn't meaning to say that you needed to employ all of those techniques, or that there isn't others that could get the job done safely. I just mentioned the ones in familiar with in case you didn't already know about them.