Puma recovery points

G'day, I fitted a Hayman Reese towbar to my 2011 Defender 110 today. Needed to use a podgie bar a couple of times to align bolt holes but it was a pretty painless excercise in the end.
This tow bar allowed me to retain the rear step.
Very happy :)

Iglooist

"I started out with nothing and still have most of it left"

https://www.aulro.com/afvb/images/im...11/07/1299.jpg


Several people have asaked me to make these and I have finally found the time. Info is in the classifieds if anyone else is interested.

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Originally Posted by Beckford

Some pictures of the MR Automotive Recovery Points I installed yesterday, before I put the front bar back on.

I purchased 4 x 120mm long M12 8.8 High Tensile Bolts from Gosford Bolts & Bearings. I had to drill an additional 12.5mm hole in the top of the chassis for each point, and drill out the hole the factory tie down point was in to 12.5mm. Cleaned up the swarf with a magnet & degreaser, then sprayed some cold gal & black kill rust in the holes and area. (should have let it dry longer than a few hours, but started raining) I then used some 3/4" galvanised pipe inside the top of the chassis to stop the chassis from crushing and galvanised washers as packing as required.

Any ideas how I should rust proof the zinc coated High Tensile Bolts?
(The best idea I can come up with is to smear them with grease.)

Again, thanks for the info already posted on this site.

Beckford.

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After looking at your front recovery points, I needed to insure they will fit the bill. I took the picture and asked our mechanical engineer if this fitment is causing uneven stresses and bending moments when in use. His reply was yes, the strain is on the single lower bolt. If the bolts are in line with the direction of pull, both bolts will shoulder the load. The greater the angle between the pull point and a line through the bolts the greater the stress on a bolt. Two ways to reduce this imballance, 1) mount the recovery point with bolts in line with attachment point. 2) use a "D" shaped recovery point. This has a bolt in the top and bottom with the recovery point in the center of the "D" thus the load is shared across the bolts.
Hope this helps.

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Originally Posted by Camper

After looking at your front recovery points, I needed to insure they will fit the bill. I took the picture and asked our mechanical engineer if this fitment is causing uneven stresses and bending moments when in use. His reply was yes, the strain is on the single lower bolt. If the bolts are in line with the direction of pull, both bolts will shoulder the load. The greater the angle between the pull point and a line through the bolts the greater the stress on a bolt. Two ways to reduce this imballance, 1) mount the recovery point with bolts in line with attachment point. 2) use a "D" shaped recovery point. This has a bolt in the top and bottom with the recovery point in the center of the "D" thus the load is shared across the bolts.
Hope this helps.

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Yes, the load on the centre bolt is greater than the recovery load because it is some distance from the bolt. This is simple high school physics. The bracket is acting as a lever, increasing the load on the bolt and the chassis rails through which it passes. I would be very interested to see any engineering test results.

Cheers
KarlB

I fear an engineer would need to look at the individual install to work out the physics. The cost of this would be inhibitave as they then would be rating the recovery point. If it failed,, oh heck you get the drift, you know where it's going from here!

Hi guys. Looking to fit Defender front recovery points.
Have read several threads on Puma recovery points, but they go back a while, and am wondering what the consensus is.
Although opinions vary, there seems to be some consensus in favour of the Maxidrive mounting points. They take two M12 bolts each, with a top hole needing to be drilled.
My 2009 Defender has the ARB bullbar, but the opinion seems to against using recovery points mounted to it.
I have a Terrafirma steering guard, but it seems recovery points can still be fitted to the chassis.
So I'm looking at the recovery points shown below. Do you think I'm on the right track?

Land Rover Defender HD Recovery Points (pair) MAXI-DRIVE

I have also seen the ones below advertised. They look similar. Has anyone tried them?

Recovery Tow Points 3400 for Land Rover Defender

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Originally Posted by DiscoMick

My 2009 Defender has the ARB bullbar, but the opinion seems to against using recovery points mounted to it.

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Why ? , I have used mine in anger to help people out a few times without any problems and given they are mounted in exactly the same place on the chassis. Am I missing something ?

Cheers Glen

Interesting. I was just referring to previous comments in this thread.