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Re:Add-ons and GVM

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07 Aug 2023 12:23 #250140 by Roger Fairclough
Replied by Roger Fairclough on topic Re:Add-ons and GVM
I like the idea of the trailer but it does not negate the overweight status of the jimny. You need a list of your extras, with the weights, and then you remove those items that can be replaced with mobile units that fit in the trailer. For instance, a hand operated Tirfor winch or similar will save probably 40kg and if the bull bar is for kangaroos remember that the bar might survive a roo hit but will the Jimnies chassis? All that energy has to be dissipated somewhere.
If you want to be legal, then you must be ruthless in your pruning.

Roger

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08 Aug 2023 03:27 #250157 by Lambert
Replied by Lambert on topic Re:Add-ons and GVM
From my limited understanding of the Australian rules doesn't an increase in gvm come out of the train weight so if you increase the weight of the car it corresponds to an equal reduction in the tow capacity? I would also suggest in your circumstances the roof system is likely the first thing to go as the roof capacity is only 30kg and most systems are most of that without anything on them.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!

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08 Aug 2023 09:39 #250163 by Roger Fairclough
Replied by Roger Fairclough on topic Re:Add-ons and GVM
The Ironman upgrade increases GVM from 1435kg to 1785kg.

Roger

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08 Aug 2023 14:34 - 08 Aug 2023 14:38 #250166 by fordem
Replied by fordem on topic Re:Add-ons and GVM

 if the bull bar is for kangaroos remember that the bar might survive a roo hit but will the Jimnies chassis? All that energy has to be dissipated somewhere.

 

I don't know if you've ever had the opportunity to take a close look at the construction of an ARB bar, but, they are designed with "crush cans", steel sections with accordion style pleated sections engineered to absorb the impact rather than pass it through to the vehicle frame - the intent is that the bar is considered "sacrificial" and replaceable, the vehicle is expected to survive.

ARB product is generally quite pricey, but in my experience you get your money's worth, yes, I can go to a local shop and have them cut & weld something together that at a glance will look like an ARB bar, but, I can guarantee you, it won't be as robust or have the same features, a lot of engineering design goes into the product.
Last edit: 08 Aug 2023 14:38 by fordem. Reason: Add. info.

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08 Aug 2023 14:52 #250168 by Roger Fairclough
Replied by Roger Fairclough on topic Re:Add-ons and GVM
Sorry to be pedantic but Dihusky says that he fitted an Ironman bullbar. Either way, a bullbar is very heavy and my point about excess weight created by add-ons is still valid.

Roger

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08 Aug 2023 17:37 #250169 by fordem
Replied by fordem on topic Re:Add-ons and GVM
The brand doesn't really matter - for an Australian manufacturer to sell the product it has to meet specific ADRs and in this case the ADRs relate to the force being transmitted to the vehicle frame for the purpose of airbag triggering.

Ironman bars will, like the ARB bars, be designed to progressively collapse rather than simply transfer the impact. As far as weight goes, I'm not certain on the Ironman bar, but for the ARB it's under 40kg.

I have the ARB figures because that would be my choice I can go hunt down the ironman spec if that would make a difference.

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