Even though the bag is 110 lbs, its going to 'jump' when you hit it. You
can put a heavy-bag spring between the bag chains and the connection to the
rafters, but in my experience, it doesn't help that much.
..
Mounting a heavy bag on the rafters seems to be the worse way to do this.
You get drywall cracks, and it shakes the whole house. I am only speaking
from experience. Trust me on the bag 'jumping'
..
I went with something like this http://www.ringside.com/DETAIL.ASPX?ID=24730
..
The thing is lagged into a concrete wall in the basement. No house
shaking at all. Or you could go with a free standing heavy bag hanger, but
those things take up a ton of room and are not that stable.


"Eigenvector" wrote in message
news
So I posted a little bit ago about hanging a punching bag from the
rafters. I have the bag on a fixture mounted to 2 rafter beams (the
rafters are roof trusses, 2x6's). The bag is a 110lb bag, hanging from an
eyebolt . The issue that I'm seeing is that when I punch the bag, the
whole ceiling is moving. I don't mean shifting off its mounts of course,
but rather I can see the ceiling drywall moving back and forth and rocking
in tempo with the bag.

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