Weld On D-Rings???

[DeanBrown3D]

I think if you upload one pic in a message it shows in the actual message, but more than one and you just get links you have to click on. Make sure they are not too big, you may have to resize them if they are some huge camera format (choose 640x480 or less). Or email them to me and I'll post them.

-D

 

[antichrist]

First of all I wouldn't call any place with 2+ acres under roof and two 1.0 mil dollar laser cutters, four press brakes and more shit than I care to list a garage. they are a world wide manufacturing facility making shit for people in europe US and south America.
snip

I was only calling them a garage because that's how they were referred to here.
Also, I wasn't trying to denigrate them, I wasn't there to hear the conversation. I was denigrating anyone, I don't care what they do, who might seriously use lifting a vehicle like that to demonstrate the strength of something that needs to withstand loads of maybe 30,000lbs + (I'm not sure what the shock load is on a yanked recovery point).
Now, if they lifted it to the top of say a 150 or 200' crane, let it free fall to about 50' and then slammed on the cable brake, I'd be more willing to trust such a test.
But I might also take a crowbar to the crane operator

I feel certain that, based on your description of the operation, they were doing it for the coolness factor, not because they thought it was any kind of valid test.

 

[Kyle]

The hitch is the strongest thing in the back of the truck and is mainly used for pulling other people so I would say just stick with that... Its not as cool and doesnt allow someone to work their skills and magic when fabricating but its old reliable... Again , I say these things about points that are going to be snatched on. If you are using a winching strap and just pulling the danger factor goes way down... I am not a big fan of the kinetics anyway so its really never a problem for me. The big issue with them is that you have no indicator that they are going to fail until they are wound up tight as hell and its too late to do anything about it.

 

[Iron Boots]

I was only calling them a garage because that's how they were referred to here.
Also, I wasn't trying to denigrate them, I wasn't there to hear the conversation. I was denigrating anyone, I don't care what they do, who might seriously use lifting a vehicle like that to demonstrate the strength of something that needs to withstand loads of maybe 30,000lbs + (I'm not sure what the shock load is on a yanked recovery point).
Now, if they lifted it to the top of say a 150 or 200' crane, let it free fall to about 50' and then slammed on the cable brake, I'd be more willing to trust such a test.
But I might also take a crowbar to the crane operator

I feel certain that, based on your description of the operation, they were doing it for the coolness factor, not because they thought it was any kind of valid test.

So you proved they lift 5000 lb. What about when you snatch someone out of a mud hole and put 5x that inpulse force though the thing? Or someone winches you with a block and puts on 15K?

Well not that you can actually quantify their test results and compare them, but hoisting something is vastly different than tugging something. Hoisting strains are differnt but generally much higher than pulling.

http://www.pirate4x4.com/tech/billavista/Recovery/index.html
This link to Billavistas article on recover has great depth on hoisting vs winching and the related stresses. Everyone should read it.

RJ

 

[antichrist]

snip
Hoisting strains are differnt but generally much higher than pulling.
snip

Assuming it's compared to a steady pull of a vehicle that isn't stuck.
Yanking a stuck vehicle, or even a winch pull on a stuck vehicle is likely to have greater forces that hoisting that same vehicle by a crane.


Good article BTW. Having worked as a rigger, I can attest to the fact that winching can be just as dangerous, and I do apply the same safety measures to winching. In fact, probably more so, since it's easier to become complacent standing in the woods, than it is hundreds of feet up on a 6 or 8" piece of steel.

 

[Andrew Homan]

Thanks again Kyle

Antichrist I'm sure it was for the cool factor and to scare the shit out of me. it did.

no worrys I learn a lot from this thread and thats why I'm here. I'm an A personality so I can be a pain in the ass so I apologize in advance.