This is how the saw sits in the arch:
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Tucked in the arch, under normal operating conditions, this is a very safe place to keep my saw while I drive through the trees. As you can see, there’s some room between the drum and cable. However, if the drum spins quickly, then gets stopped suddenly, the cable will continue to unwind and “rat nest”. It happens from time to time, and usually isn’t a big deal. This time however, one of the loops of cable hooked the felling spikes and ripped it off the cover. By the time it happened, I couldn’t have reacted fast enough. Just the way things go.