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Home > Maintenance & Modifications > PORTAL AXLES, BOLT-ON PORTALS,Etc.- Options available?
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grizz



Member Since: 31 Aug 2014
Location: cheshire
Posts: 208

2014 Defender 110 Puma 2.2 XS CSW Corris Grey
Ater looking on the killer axle web site it looks like the new portal is all new with lessons learnt from the older kit .

I may order a set this week
Post #401368 23rd Feb 2015 11:05am
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Supacat



Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11010

United Kingdom 2013 Defender 110 Puma 2.2 XS DCPU Keswick Green
genuinely wish you good luck with that - it would be interesting to follow your build if you go that way.

Interesting to see Mercedes G Wagon G 500 4x4˛ portal setup has a huge bracing bar:


Click image to enlarge
Post #401443 23rd Feb 2015 6:15pm
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grizz



Member Since: 31 Aug 2014
Location: cheshire
Posts: 208

2014 Defender 110 Puma 2.2 XS CSW Corris Grey
The kit has been changed quite a lot .

Click image to enlarge



Click image to enlarge
Post #401447 23rd Feb 2015 6:27pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 14576

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I certainly wouldn't be fitting a portal kit to one of the 2.2s with suspect axle flanges!

The AULRO thread linked earlier is actually a very interesting read, if you have the stamina and a day to read it. Most of the issues were to do with the fact that the portal kit (a) inevitably puts much greater loads on the ends of original axles and (b) alters several key aspects of the suspension geometry, resulitng in significant loads on suspension components which they were not designed to take.

I suspect the durability of the Tibus design (or rather, the durability of the LR bits that the Tibus design is attached to) will depend very much upon the way the vehicle is treated and the sort of driving it does. It will require more understanding and driver sympathy than a standard vehicle.

It is interesting that the two best publicised users and vehicles have such different results.

If you do fit a conversion, please please run a build thread and keep us fully informed! I really want to fit a set to my DC (out of the question because of cost for the foreseeable future sadly) for no reason other than they look so incredibly cool!
Post #401476 23rd Feb 2015 7:39pm
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100inch



Member Since: 15 May 2012
Location: Brunswick
Posts: 341

Australia 2010 Defender 110 Puma 2.4 CSW Santorini Black
And things like Anti-Squat and roll angle have to be addressed too. m
Post #401613 24th Feb 2015 8:37am
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Supacat



Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11010

United Kingdom 2013 Defender 110 Puma 2.2 XS DCPU Keswick Green
blackwolf wrote:
It is interesting that the two best publicised users and vehicles have such different results.


The Oz chap answered that question by stating that the prototype version was used on one, whilst his was an altered production version.
Post #401630 24th Feb 2015 10:11am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 14576

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
100inch wrote:
And things like Anti-Squat and roll angle have to be addressed too.


I suspect that this rther depends on what you're using the vehicle for. If you want a rock crawler, it probably doesn't matter. If you want a rock crawler that will safely do 70mph on the tarmac as well, and handle as well (?) as a standard Defender, it - and a whole raft of other suspenesion geometry issues - matters a lot. Very few of the production vehicles with portals are designed or intended to be used as highway cruisers, they're pretty specialised off-roaders and for a good reason.

Supacat wrote:
The Oz chap answered that question by stating that the prototype version was used on one, whilst his was an altered production version.The Oz chap answered that question by stating that the prototype version was used on one, whilst his was an altered production version.


Yes indeed. "Oilworker" is running on prototype 5" offset portals on his 130, the Aussie fellow is running 4" offset early production portals, so significantly different. The 5" versions were better braced to the axle case from the start, the 4" originally had no braces and that seemed to be the cause of some of the early problems. I suspect that the use the vehicles got/get is also very different, since the Aussie fellow seemed to do a lot of rock crawling one-wheel-in-the-air type stuff (which seems to break things) whilst Oilworker seems to do more European-type stuff.

The thing that stikes me most about any set-up which involves fitting aftermarket drop-boxes onto standard Landrover axle components from an engineering point-of-view is that the geometry of the drop box is inevitably going to increase massively the load on some components which were simply not designed to take the loads. Bearing in mind the already significant cost of the kit, it seems a false economy not to upgrade the axle case and flanges as well. In particular at the fron the loads on the steering swivels will be much greater than normal, and quite different to normal, and accelerated wear and premature failure of the swivels in highly likely. From an engineering/loading point of view it would be more satisfactory to fit the drop box on the inboard side of the swivel housing rather than the outboard, but that adds a whole raft of other problems.

All that being said, I beleive that a Defender fitted with Tibus portals (particularly the latest incarnation which is supposedly much stronger than the version the Aussie chap fitted) would make and exceptionally capable off-roader, an driven sympathetically would be durable. It would also be a fun and cool project, shame the cost makes it rather unattainable!
Post #401641 24th Feb 2015 11:02am
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100inch



Member Since: 15 May 2012
Location: Brunswick
Posts: 341

Australia 2010 Defender 110 Puma 2.4 CSW Santorini Black
Anti Squat has a big impact on braking and bringing forwards traction on the ground. How many times do you see a stock LR/RR climbing a steep hill whilst the badly lifted car fails? m
Post #401654 24th Feb 2015 12:33pm
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MadTom



Member Since: 10 Sep 2013
Location: Olomouc
Posts: 464

Czech Republic 1999 Defender 130 Td5 HCPU Baltic Blue
Just one think - Oilworker used his 130 in Africa race, without any significant problem, caused by the portals. And I think, any problem with steering in high speed will be visible very fast in in this type of use. It is much harder than some "weekend offroad play" or "just travelling". "Drobek" = The Small One - Discovery 2, "BlufĂ­nek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo Smile
Post #401746 24th Feb 2015 6:29pm
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Supacat



Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11010

United Kingdom 2013 Defender 110 Puma 2.2 XS DCPU Keswick Green
Chris86 wrote:
There was a firm based near Inverness called Portalrover, I do not know if they still exist though.

They also did 6x6 conversions

Chris



Click image to enlarge


always looked nice Thumbs Up
Post #404963 6th Mar 2015 11:54am
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Supacat



Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11010

United Kingdom 2013 Defender 110 Puma 2.2 XS DCPU Keswick Green
Just resurrecting this thread as I see that there is now a UK agent for the kit quite close to me - http://www.lvblimited.com/

Anyone know anything about them - LVB that is?
Post #591559 9th Jan 2017 3:55pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 14576

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I'd not heard of them until your post.

I wonder how many Tibus portal conversions there are in the UK, or the ROW for that matter.

I would still love to be in the position to build a portal-Rover.
Post #591572 9th Jan 2017 5:04pm
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Supacat



Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11010

United Kingdom 2013 Defender 110 Puma 2.2 XS DCPU Keswick Green
Just another update on portal axles as i came across this company - maybe not the straight swap onto a defender but possible options...



https://www.axletech.com/en/products/suspe...-wheel-end

or if you want to swap the whole axle out:



https://www.axletech.com/en/products/axles/3000-series-portal
Post #650461 15th Sep 2017 2:44pm
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