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#289181 - 06/02/18 10:24 AM Knot guys - suspend a log without bias?
Bingley Offline
Veteran

Registered: 02/27/08
Posts: 1576
I want to hang a log from a fixed point using a rope. What knot should I use?

1. The knot should not create bias! In other words, the knot should not make the log more likely to spin in one direction than another.

2. The knot needs to be at the center of the log, leaving it free to spin.

I know many of you are skilled with knots. Please help!

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#289182 - 06/02/18 01:10 PM Re: Knot guys - suspend a log without bias? [Re: Bingley]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 7705
Loc: southern Cal
Part of the problem will lie with the rope you use. A laid rope (spiral twists) will tend to unwind under load. Use a kernmantle (sheathed) rope to minimize that issue.

I would try a bowline on a bight -one loop expanded to envelop the log and brought back to the second loop (you can do as many loops as you desire, depending on the length of the rope you have and the size of the log), attaching to the smaller loop with a carabiner(s).

This works for large mammoth skulls - ought to work for logs.

Interesting problem! What other solutions are there?? - I'll bet Tony E has a dandy....


Edited by hikermor (06/02/18 01:43 PM)
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#289184 - 06/02/18 03:58 PM Re: Knot guys - suspend a log without bias? [Re: hikermor]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 7705
Loc: southern Cal
A really simple solution would be to screw an eye bolt into the upper end of the log and simply hang it from that point. Would that work?
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#289185 - 06/02/18 05:47 PM Re: Knot guys - suspend a log without bias? [Re: Bingley]
M_a_x Offline
Veteran

Registered: 08/16/02
Posts: 1203
Loc: Germany
If it really needs to spin freely, a swivel or two might be required. A rope might get biased when it has to take torque. The internal friction may not allow it to completely return to neutral state.
It might also make a difference whether the log is suspended vertically or horizontally.
I´ll second hikermore´s suggestion to use kernmantel rope.
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#289186 - 06/04/18 02:32 AM Re: Knot guys - suspend a log without bias? [Re: Bingley]
clearwater Offline
Old Hand

Registered: 03/19/05
Posts: 1177
Loc: Channeled Scablands
Use webbing. The knot will have little to do with spinning I would think. Timber hitch, clove hitch, klemheist, prussic.

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