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  #601  
Old 09-28-2013, 12:48 AM
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Re: No tow hooks? Front Recovery Soluition help

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Originally Posted by bmackin View Post
I'm happy to announce Chief Products is almost finished with our recovery hooks for the WK2! The original hooks we designed (link), which were almost an exact copy of the stock hooks, surprisingly didn't pass engineering certification. Since that time, we've performed FEA testing on 10 design iterations, making changes along the way to increase strength, improve ease of installation and lower manufacturing costs. Well after all that work, I'm happy to announce we've finally passed certification. I'm really happy with the final product. We've taken the time to make sure these are 100% correct and I think it shows in the final product.

We will be offering 2 versions:

WK2 Recovery Hooks - Front (pair)
2500kg SWL (Safe Working Load) Engineer Certified
7500kg MBS (Minimum Breaking Strength) Engineer Certified

WK2 Recovery Points - Front (pair)
4500kg SWL (Safe Working Load) Engineer Certified
13500kg MBS (Minimum Breaking Strength) Engineer Certified

I had the engineer do some 3D renderings for me so everyone could get a sneak peak. The manufacturer is currently working on the prototype and pricing. I'm hoping to have more information for everyone very soon.

WK2 Recovery Hooks - Front (pair)
2500kg SWL (Safe Working Load) Engineer Certified
7500kg MBS (Minimum Breaking Strength) Engineer Certified



WK2 Recovery Points - Front (pair)
4500kg SWL (Safe Working Load) Engineer Certified
13500kg MBS (Minimum Breaking Strength) Engineer Certified

Good to hear someone is finally coming to the party.

I have a quick question, I have noticed that you have done the wise thing and had the recovery hooks engineered, but have you had the fixing or attachment points on the vehicle tested to see how much distortion is evident? I have spoken to a few after market accessory manufacturers, and the reason they haven't released anything is due to the lack of structural strength in the front end on a WK2. One Manufacturer went as far as saying that they bent a 2012 GC during some testing exercises.

It may just be that the JGC isn't as much as a go anywhere vehicle as we would all like them to be.
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  #602  
Old 09-28-2013, 01:48 AM
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The current single jeep hook mounts to the same place as proposed by chief - on the basis that jeep think it is ok to recover with a single point I'm sure two will be fine.
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  #603  
Old 09-28-2013, 02:03 AM
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Re: No tow hooks? Front Recovery Soluition help

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Originally Posted by BobT View Post
So what does that say about the rear hook? Should that be replaced as well?
I'm not sure if everyone should replace the rear hook, it would depend on your usage. Based on our testing, my guess is the stock rear hook would be rated at 2500kg MBS. I removed mine, and prefer to use a receiver hitch recovery point, on my class IV tow hitch (rated at 4,500kg). If you do a fair bit of off-roading in your WK2, it's nice to know that removing the rear hook will also improve your departure angle.
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  #604  
Old 09-28-2013, 02:36 AM
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Re: No tow hooks? Front Recovery Soluition help

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Originally Posted by iboughtajeep View Post
Good to hear someone is finally coming to the party.

I have a quick question, I have noticed that you have done the wise thing and had the recovery hooks engineered, but have you had the fixing or attachment points on the vehicle tested to see how much distortion is evident? I have spoken to a few after market accessory manufacturers, and the reason they haven't released anything is due to the lack of structural strength in the front end on a WK2. One Manufacturer went as far as saying that they bent a 2012 GC during some testing exercises.

It may just be that the JGC isn't as much as a go anywhere vehicle as we would all like them to be.
A good question. Our engineer did not test the mounting points on the WK2.

From my understanding, Jeep has rated each front frame mounting point to 1.5 GVM for pull forces. Since the GVM for a WK2 is approximately 3000kg, each front frame mounting point should withstand 4500kg before deforming, (hence the rating for our WK2 Recovery Points).

I wouldn't worry about a lack of structural strength, testing by Jeep has shown the torsional stiffness (23000 N-m/deg) and bending stiffness (10200 N/mm) of the WK2 to be very good, contributing to its off-road durability, excellent on road handling and low interior noise.

Even so, considering that the WK2 is unit-body construction, I believe it is a very good idea to use an equaliser strap to distribute the force over both sides of the vehicle during difficult recoveries.

As a side note, pull rating for the front of a WK2 drops to 0.9 GVM (2700kg) for 90 deg outboard pulls. So always try to pull from directly in front of the vehicle.

Cheers,
Bill
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  #605  
Old 09-28-2013, 04:48 AM
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Re: No tow hooks? Front Recovery Soluition help

What is the incl. tow eye rated at?
True, having them chromed after purchase is easy, I just like to have it all, function & form, just like my Overland.
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  #606  
Old 09-28-2013, 07:17 PM
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Quote:
Originally Posted by JustinS View Post
What is the incl. tow eye rated at?
True, having them chromed after purchase is easy, I just like to have it all, function & form, just like my Overland.
The included screw in tow eye is not rated for recovery, it is for towing and transporting the vehicle only. Using it for recovery would be very dangerous.

Cheers,
Bill
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  #607  
Old 10-01-2013, 06:34 PM
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Re: No tow hooks? Front Recovery Soluition help

Quote:
Originally Posted by bmackin View Post
A good question. Our engineer did not test the mounting points on the WK2.

From my understanding, Jeep has rated each front frame mounting point to 1.5 GVM for pull forces. Since the GVM for a WK2 is approximately 3000kg, each front frame mounting point should withstand 4500kg before deforming, (hence the rating for our WK2 Recovery Points).

I wouldn't worry about a lack of structural strength, testing by Jeep has shown the torsional stiffness (23000 N-m/deg) and bending stiffness (10200 N/mm) of the WK2 to be very good, contributing to its off-road durability, excellent on road handling and low interior noise.

Even so, considering that the WK2 is unit-body construction, I believe it is a very good idea to use an equaliser strap to distribute the force over both sides of the vehicle during difficult recoveries.

As a side note, pull rating for the front of a WK2 drops to 0.9 GVM (2700kg) for 90 deg outboard pulls. So always try to pull from directly in front of the vehicle.

Cheers,
Bill
Thanks for a very informative post. The Jeep certainly feels stiff in standard form. No doubt the tow-bar (particularly the Mopar one) and rock rails would significantly add to the stiffness although not so much for the front end members. Perhaps it was psychological but the Jeep felt more rigid after I fitted the rock rails.

With two hooks, there is really no excuse for not using an equaliser strap. Perhaps you could value add by offering the hooks as a kit with an equaliser strap ...plus a bonus set of teak handled steak knives?

So what is your ETA?
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  #608  
Old 10-02-2013, 12:49 AM
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Re: No tow hooks? Front Recovery Soluition help

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Originally Posted by BobT View Post
Thanks for a very informative post. The Jeep certainly feels stiff in standard form. No doubt the tow-bar (particularly the Mopar one) and rock rails would significantly add to the stiffness although not so much for the front end members. Perhaps it was psychological but the Jeep felt more rigid after I fitted the rock rails.

With two hooks, there is really no excuse for not using an equaliser strap. Perhaps you could value add by offering the hooks as a kit with an equaliser strap ...plus a bonus set of teak handled steak knives?

So what is your ETA?
Teak handled steak knives are on the way!

We actually are putting together a recovery kit, but we are still a few months away from that being ready.

For the recovery hooks, I'm still waiting for the prototypes. I'm hoping to have them next week.

Cheers,
Bill
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  #609  
Old 10-02-2013, 01:22 AM
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Re: No tow hooks? Front Recovery Soluition help

I want one!! ... Make it a pair...
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  #610  
Old 10-06-2013, 11:23 AM
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Great news count me for a pair :-)
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Old 10-06-2013, 04:04 PM
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I've been talking to a parts supplier in the states. Mopar/Dealer in brisbane says they have ordered (new)part number 82212095 for my front recovery hooks, and there is a back order. States supplier says they have the part number in stock, but have checked with Mopar(US) and they say it won't fit British Models?? I supplied them my VIN#...
Does anyone know if this part number is our JGC MY14 front recovery hooks?
Should I get them, to try? Would Mopar US be wrong ?
I need some hooks in the next month before a trip.
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  #612  
Old 10-06-2013, 05:29 PM
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Re: No tow hooks? Front Recovery Soluition help

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Originally Posted by TJQLD View Post
I've been talking to a parts supplier in the states. Mopar/Dealer in brisbane says they have ordered (new)part number 82212095 for my front recovery hooks, and there is a back order. States supplier says they have the part number in stock, but have checked with Mopar(US) and they say it won't fit British Models?? I supplied them my VIN#...
Does anyone know if this part number is our JGC MY14 front recovery hooks?
Should I get them, to try? Would Mopar US be wrong ?
I need some hooks in the next month before a trip.
They are unlikely to fit. From MY12 on, export WK2's had a revised front end to meet European regs which outlaws chunky metal things up front. It seems the gnomes in Detroit were unable distinguish Australia from Europe so we got caught up in it. Chief Products https://www.facebook.com/ChiefProducts are about to release appropriate hooks. God bless them! In the interim you could get the dealer to fit the awkward single hook that Jeep Aust. got made up to attempt to appease our almighty outcry. Also see No tow hooks? Front Recovery Soluition help
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