Any benefit? Recovery point Q - JeepForum.com
 
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post #1 of 7 Old 11-18-2011, 03:03 PM Thread Starter
Blkdvll
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Any benefit? Recovery point Q

Is there any benefit to linking the front recovery points with a chain or rope? My thinking is that it would disperse the work between the points-brackets-and in my case, the unibody and reduce the chances of something bending/breaking/getting tweaked from a good tug.

Thoughts?


2004 4.0L w/242 WJ - Front tow points, Rear D Shackel, 3"/2.5" lift, 245/75 Falken ATs, Sway Bar delete, Overland Sliders, T-Case Skid, Hella 500's, Halved Bumper, Custom Rad.Core Skid, Soft 8's, MV50 OBA, Hi-lift/lift mate, shovel, (1st)On-Board Cooler, OME S.S., Rola Basket.....more soon
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post #2 of 7 Old 11-18-2011, 03:21 PM
biffgnar
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Search "bridle" in connection with recovery and you will find discussion of that.

Here's a quote from a respected member where bridles were being discussed:

Quote:
Originally Posted by mrblaine View Post
Bridles are bad. Bridles are very bad, but only because folks don't understand them or know how to rig them. If the two legs of the bridle are not at least twice as long as the distance between the attachment points, the squeeze forces developed grow exponentially. The shorter the legs, the higher the forces go and it's got nothing to do with it being chain or stretch wrap. It's just the pure physics of angular forces.
And as you stated, it's also very bad on the recovery gear and it won't matter if it's chain or rope, or what ever, something will typically fail.
If you really want to mess a frame up, put the bridle around it so it's almost straight across and tight. Then go do a pull on it. I've seen the same set-up collapse the front frame horns of a Medium Duty big truck.

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post #3 of 7 Old 11-18-2011, 03:22 PM
paintballtruck
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it could pull the points together and bend them towards each other depends on the amount of bracing between them
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post #4 of 7 Old 11-18-2011, 03:40 PM Thread Starter
Blkdvll
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lol, fair enough! Thanks guys!

2004 4.0L w/242 WJ - Front tow points, Rear D Shackel, 3"/2.5" lift, 245/75 Falken ATs, Sway Bar delete, Overland Sliders, T-Case Skid, Hella 500's, Halved Bumper, Custom Rad.Core Skid, Soft 8's, MV50 OBA, Hi-lift/lift mate, shovel, (1st)On-Board Cooler, OME S.S., Rola Basket.....more soon
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post #5 of 7 Old 11-19-2011, 04:18 PM
DanZ51
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It's actually the best way to recover a vehicle IF done correctly:

Quoted from U.S. Army Field Manual 20-22 (the Bible of Recovery Operations)

On wheeled vehicles, whether the pull is
made from the front or rear, the effort should be
applied to the lifting shackles (fig. 29). To apply
the effort equally to both shackles, a sling should
be used between the two shackles and the effort
applied to the sling. A chain is the best item to use
as a sling. If mechanical advantage is used, the
block will be attached to the sling and the winch
cable reeved through the block (fig. 30). When a
sling is used in this manner the effort exerted on
each side of the sling will be slightly greater than
half the effort exerted by the winch. As the angle
of the sling increases (the sling becomes shorter)
the load on the sling becomes greater. To keep the
load within safe limits, the angle of the sling
should be kept at less than 30 degrees.
The apex of the angle formed by the sling should be at least 6 feet
from the vehicle. The formula for measuring
the load on a sling can be found in TM
5-725.

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post #6 of 7 Old 11-19-2011, 05:16 PM
CJ7-Tim
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Quote:
Originally Posted by DanZ51 View Post
It's actually the best way to recover a vehicle IF done correctly:

Quoted from U.S. Army Field Manual 20-22 (the Bible of Recovery Operations)

This is OK if your tow points are mil-spec, or your 4x4 is military surplus.

If you tow points are civilian strength, follow mrblaine's recommendations, and do not use a bridle.




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post #7 of 7 Old 11-20-2011, 10:13 AM
DanZ51
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Quote:
Originally Posted by CJ7-Tim View Post
This is OK if your tow points are mil-spec, or your 4x4 is military surplus.

If you tow points are civilian strength, follow mrblaine's recommendations, and do not use a bridle.
Naw, just be one of the
Quote:
folks who don't understand them or know how to rig them.

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