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Roof rack better in the gutter or on the grab rails?

Shopkeep said:
Anyone else in Aus who has taken delivery of their Grenadier care to tap on the bracket with a coin or screwdriver (or give ‘em a bite with your pearly whites) to confirm they are some kind of metal?
Click to expand...
in lieu of a bite ;)... a "subtle" indentation with a small screwdriver suggests they're formed from some sort of high density polymer material... I'm not up on my polymer chem. these days to identify exactly what sort of polymer it might be. The bar probably aluminium alloy. The concave liner of the "Alpine" cavity however appears to be a vinyl material.
 
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DenisM said:
in lieu of a bite ;)... a "subtle" indentation with a small screwdriver suggests they're formed from some sort of high density polymer material... I'm not up on my polymer chem. these days to identify exactly what sort of polymer it might be. The bar probably aluminium alloy. The concave liner of the "Alpine" cavity however appears to be a vinyl material.
Click to expand...
Would you believe thermoplastic or polymer coated metal????
 
I don't want to withhold this picture from you.
Here we have loaded a single element with 240kg for test purposes. From 180kg the panel starts to bend minimal. With a load of 240kg it achieves a deflection of 4mm.
We install 2 elements as standard, optionally also 3 elements. We are therefore far above the required stability.
If we have customers who are struggling with the platform remaining on the plastic rails, we can raise the platform 5mm with simple inserts.

Please don't forget, we are always in very close contact with our customers and also respond directly to their experiences and feedback and implement them where we can.

Only with the combination of our 25 years of experience in off-road and overlanding, our experience as mechanical engineers and the experiences of our customers worldwide, we can create new and even better products.

Foto 21.07.23, 10 08 58.jpg
 
I note the key information missing in this discssusion is the reason why you dont just depend on mounting a roof rack just to the gutter, like most of current 4x4's.
You need to question why did INEOS put a flat roof on the Grenadier with supports down the length of the roof?
Why does LeTECH and Black sheep ( Germany ) both utilise the Grenie grab handle bolts for additonal support for a roof rack? They explained their roof racks use those grab handle factory fixings that reduces the overall roof structure and factory load specifications.
 
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ADVAW8S said:
There is a misconception that the BSI rack is attached to the lashing tube.
Click to expand...
The photos make this easy to imagine that they do:
Screenshot_20230726_080217.jpg

Screenshot_20230726_080256.jpg


Then there's this:
Black Sheep said:
If we raise the beam, we get away from the plastic strips and shift the entire load to the outer tubes.
Click to expand...

Post in thread 'Roof racks, Head up displays and dash cams etc. Any after market accessory.' https://www.theineosforum.com/threa...ter-market-accessory.12410499/post-1333200281
 
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DCPU said:
The photos make this easy to imagine that they do:
View attachment 7821237
View attachment 7821236

Then there's this:


Post in thread 'Roof racks, Head up displays and dash cams etc. Any after market accessory.' https://www.theineosforum.com/threa...ter-market-accessory.12410499/post-1333200281
Click to expand...
I thought the same thing until I saw one their more recent videos. The idea of using the grab handle fixing points to secure an awning is something I'm going to investigate once I get my hands on the vehicle.
 
Here is the final result.
Bars are Rhino Rack Heavy Duty 1800mm
Bar legs are Rhino Rack RL210DS8
Roof tent is James Baroud Evasion EVO XXL
Awning is James Baroud Falcon 270°

No gutter bending. As explained here
https://www.theineosforum.com/threa...ter-market-accessory.12410499/post-1333199557
The only modification I made is insert a small piece of HDPE between the base of the legs and the outer edge of the gutter to maintain the leg as close as possible to the inner side of the gutter.
 

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