Member Since: 15 Feb 2006
Location: Kyalami
Posts: 2059
I know I am risking a severe beating by asking this question again, but how on earth would exceeding the load on the roof rail lead to the type of damage you have shown on your pic? The roof rail doesn't sit on top of the bolts that secure it to the roof, it spreads the load along its entire length - all the bolts do is stop the rail from moving laterally. they should have no work to do in a vertical plane unless they are loose and a load is exerted directly on the bolt.
or am I smoking the wrong stuff again?
feel free to tell me to fork off
5th Aug 2010 10:25 am
WOODY179
Member Since: 01 Jun 2005
Location: Chesterfield
Posts: 3654
Think I'd be getting an indepenent review on the cause with a view to pursueing a claim against LR for the repair costs if the independant said it was nothing to do with the way that the roof rack had been loaded.1996 Discovery 1 300TDI ES Biarritz Blue, sold
1999 Discovery 2 TD5 ES Rioja Red, sold
2002 Discovery 2 TD5 ES Buckingham Blue, sold
2005 Discovery 3 TDV6 HSE Adriatic Blue, sold
2006 Discovery 3 TDV6 HSE Zambezi Silver, sold
2011 Discovery 4 SDV6 HSE Nara Bronze, sold
2016 Volvo XC60 D5 AWD Lux Nav Twilight Bronze, sold
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5th Aug 2010 10:37 am
pjb
Member Since: 05 Jun 2007
Location: Sunny Oxon
Posts: 308
Sorry I must have missed something !
Just because you put a roof tent on the roof rack does not mean you have used it thus how can anyone with any certainty say too much weight has been put on the roof - You could have put the rack & tent on a few days earlier.
If the roof had been overloaded there would have been damage to the roof along the length of the roof rail not the point of where the rail was connected to the car.
A static load on a piece of metal that is not moving is not going to cause this sort of damage !
The roof has been designed to effectively support the weight of the car when upside down in an accident so it is total B s to suggest that the weight of the rack & tent would damage the roof.
Personally, it would look to me like either when fitting the rack to the rails the width of the rack was slightly off so put strain on the captive( if thats what they are supposed to be) nuts or the rails were never tightened as such the movement of rack & tent has strained the nuts.
Many car & van roof's have equally poor nuts into which roof bars & rails are connected with no problems.
If done up tight the real strain is with the wind resistance trying the rip it off the roof the weight has little real effect.
I think you need to go back to landrover as this is horse . They supplied & promoted the landrover G4 challenge, 100's of pictures on line that show them using Range Rover Sports & Discovery 3 loaded with all sorts of equipment on the roof being used off road !
They then sold these vehicles to the public - I had one a range rover sport & many other people on this forum have Disco 3's.
You cannot let them gat away with this it could be argued that the advertising for the G4 challenge was totally misleading.
PS I'm not an engineer just my thoughts on the loads etc involved.
I really wish you all the luck in getting it resolved.
I hope you can enjoy your breakPreviously those that have a special place in my heart
BV55YZD G4 RRS
BP52GJE G4 110
5th Aug 2010 11:29 am
CFB
Member Since: 02 Dec 2005
Location: Bradford, West Yorkshire
Posts: 6100
Not sure about the particular roof tent you have but I have seen others extend beyond the rear of the D3 by some distance, if it is this type of tent perhaps the weight distribution being towards the rear has caused undue strain on the front fixings as they have almost lifted out of the roof? This then has nothing to do with load weights but more about even distribution.
The OP specifically mentioned the front forward fixings being the ones coming adrift.
Pic below stolen from the gallery to explain what i am getting at......
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5th Aug 2010 11:39 am
caverD3
Member Since: 02 Jul 2006
Location: Oberon, NSW
Posts: 6922
I suspect LR know that the fixing is wrong and not fit for purpose. Perhaps they are worried there may be more out there and don't want to set a precedent. They are covering themselves. How do they know what you had on the roof, you didn't terll them did you. I agree with pjb. (reasonable expectation of performance)
I'll ask again; has anyone got the same fixings?“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.
To answer a couple of points raised.
The rack is a 3/4 size Hannibal roof rack with rear and side bars removed weight approx 26kg and the roof tent is a columbus small carbon fibre at 35kg. The weight is evenly distributed.
Landrover DO know what is fitted as they have sent one of their warranty claims specialists out to see the car at the main dealers.
ALL G4 CHALLENGE VEHICLES ARE BUILT BY LANDROVER SPECIAL VEHICLES AND ARE THERFORE BUILT/MODIFIED AS REQUIRED TO MEET G4 CHALLENGE USAGE.Mike
5th Aug 2010 3:00 pm
pjb
Member Since: 05 Jun 2007
Location: Sunny Oxon
Posts: 308
Hi Mike,
"ALL G4 CHALLENGE VEHICLES ARE BUILT BY LANDROVER SPECIAL VEHICLES AND ARE THERFORE BUILT/MODIFIED AS REQUIRED TO MEET G4 CHALLENGE USAGE."
They might say that in the blurb but in reality do they really expect us to think they did anything to the roof of my G4 RRS !
I can assure you they did not, I had a leaking roof so the roof lining was dropped to find the problem, there was no roof strengthening, it was just a loose "captive nut" they only dropped the lining to check no damage to the roof. Sadly not done at a main dealer or otherwise it may have helped you.
Good luck
PaulPreviously those that have a special place in my heart
BV55YZD G4 RRS
BP52GJE G4 110
5th Aug 2010 4:59 pm
highbayrack
Member Since: 09 Jul 2008
Location: Northamptonshire
Posts: 2776
For what it's worth, and I'm not a qualified Metallurgist nor a Structural engineer, but my understanding is that there are clearly defined design safety codes which state that things like this are designed and tested on a 2:1 safety factor. Therefore in other words, this 75kg on-road figure that Landrover quote should in theory be able to withstand at the very least 150kg before it fails completely. Manufacturers always half the capable load factors to cover themselves. Might be worth you talking to a Structural engineer about this.On a mission to find the perfect Pork Pie. Just Found it (I think)..(Yes I have)
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This is going nowhere
Landrover will not accept a warranty claim after inspecting the D3. They stand by their loadings for the vehicle regardless of any safety factor built in.
I am happy to have brought this issue to everyones attention, what you do with the information is up to each individual.
My D3 is currently in the body shop having all the roof rail fixings modified by the addition of load spreading plates.
I will upload photos of the modifications when they have been completed.
I am not prepared to take this any further, I do not have the time, patience or money to follow this up. Mike
5th Aug 2010 7:32 pm
caverD3
Member Since: 02 Jul 2006
Location: Oberon, NSW
Posts: 6922
Re: Roof Tent
MELISCAT wrote:
To answer a couple of points raised.
The rack is a 3/4 size Hannibal roof rack with rear and side bars removed weight approx 26kg and the roof tent is a columbus small carbon fibre at 35kg. The weight is evenly distributed.
Landrover DO know what is fitted as they have sent one of their warranty claims specialists out to see the car at the main dealers.
ALL G4 CHALLENGE VEHICLES ARE BUILT BY LANDROVER SPECIAL VEHICLES AND ARE THERFORE BUILT/MODIFIED AS REQUIRED TO MEET G4 CHALLENGE USAGE.
26kg plus 35kg is only 61kg. Why are they accusing you as it is below 75kg?
The modification you are having done at the body shop is what is achieved by the LR fixing everyone else has.
If you don't want to pursue it that is up to you but it makes me wonder how many other vehicles there are like it. Imagine the damage possible if you hadn't noticed.“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.
The work I am having done will be more extensive than the plate shown in Lee157's photographMike
5th Aug 2010 9:38 pm
caverD3
Member Since: 02 Jul 2006
Location: Oberon, NSW
Posts: 6922
MELISCAT wrote:
THE OFF-ROAD LOADING IS 50Kg
75% of the mileage covered by my Disco 3 is OFF-ROAD
How do they know?“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.
Simple-my main dealer services the vehicle and they know the trips that the vehicle goes on and sand behind all the trim is a dead giveaway.
This will be my last posting on the subjectMike
5th Aug 2010 11:17 pm
caverD3
Member Since: 02 Jul 2006
Location: Oberon, NSW
Posts: 6922
wrote:
This will be my last posting on the subject
Fair enough.
However I think this is poor on LRs part. They have made assumptions and used that to get out of paying what could be a genuine warranty repair.
I think MELISCAT though has brought something to our attention that should be of concern to all those with roof racks.
There are many, especially here in Oz who put more than you have on the roof and could have the same problem. I however suspect that it is more likely a factory blunder.
Obviously the fixings were put on by Bob :
It should be a concern for many. It is simple enough; we know of a vehicle with a different fixing to most and it failed and caused damage to the body shell. It certainly made me check mine to see.“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.
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s to suggest that the weight of the rack & tent would damage the roof.
(reasonable expectation of performance)
