 | Home > Technical > ATB (torsen) front and rear install |
 
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2637   
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@Tatt great news! Who is the mechanic you used?
Btw, I also have a n ATB in the rear diff on my 90, it would be nice to compare the performance when off-road. Have a look at joining the Cape Land Rover Club - great bunch of people and we do off-road outings once a month or so - www.clrc.co.za  --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged 
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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10th Aug 2022 7:10am |
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| Tatt Member Since: 04 Oct 2008 Location: Was Castleford, now Cape Town! Posts: 47 
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Landy Guru.
As mentioned, I had both front and rear diffs done, didn't do the transfer case (it actually completely slipped my mind and I should have thought about this when they rebuilt my gearbox..). Besides this, LG have done a fair bit of work recently, had the V8 5th gear installed, which works very nicely with the 1.2 Ashcroft did for me around 13 years ago! Can actually hold a conversation when cruising at 100km/h, and this is definitely an upgrade I recommend for TD5's! Also had a double-knuckle front prop installed and a few other bits and bobs.. Got around 180k miles now and my van is 20 years old, so been going through it to make sure it lasts another 20! Been meaning to join the club for years! Will finally do so tomorrow. Tom |
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10th Aug 2022 7:00pm |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324 
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I've just joined the club with an Ashcroft ATB in the rear diff of my 110. Very happy so far
Click image to enlarge More details here: https://www.defender2.net/forum/post961277.html#961277 Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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10th Aug 2022 7:49pm |
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| ashtrans Site Sponsor Member Since: 08 Nov 2008 Location: Harpenden Posts: 257
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another 8200 Kg of ATB's came in yesterday ! Dave |
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12th Aug 2022 6:22am |
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| Tatt Member Since: 04 Oct 2008 Location: Was Castleford, now Cape Town! Posts: 47
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Wow!!
Going to try mine out this weekend I hope! Studying busy getting in the way of play at the moment! Tom |
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12th Aug 2022 5:38pm |
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| Tatt Member Since: 04 Oct 2008 Location: Was Castleford, now Cape Town! Posts: 47
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Wow!!
Going to try mine out this weekend I hope! Studying busy getting in the way of play at the moment! Tom |
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12th Aug 2022 6:22pm |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324
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I, perhaps naively, thought that you built them, Dave rather than buying them in? Or is that pallet loads of components? Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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13th Aug 2022 10:26am |
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| 90 Dreamer Member Since: 13 Jul 2019 Location: Oop North Posts: 2142 
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Are they not Quaiffe ?? Most common production one I think ??
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13th Aug 2022 5:49pm |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2637
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Chaps, went off-roading yesterday, and on some cross-axles I struggled a bit, almost like the ATB was not working.
How would I test that it's working as it should? -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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15th May 2023 7:19am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Hi Naks. Sounds like traction was limited - none at times to one wheel which would equal no transfer of power to the opposite wheel. According to Ashcroft's website this can happen in cross-axle situations. Left foot braking would have helped add load to the wheel without traction and diverting some drive to the opposite wheel.
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15th May 2023 9:14am |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2637
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^ yes, I understand.
But if I memory serves correctly, when I first fitted the ATB, I could gently touch the brakes when in cross-axles and the slipping wheel would then 'catch', giving me traction. this doesn't seem to happen any more, but I could be wrong. Hence why I would like to know if there's a way of testing in a workshop if the ATB is still working properly. -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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15th May 2023 9:16am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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So first thing that springs to mind is, are your brakes as good as they were when you first fitted your ATB? I would suggest they would wear quicker than your ATB. It is remarkable how bad brakes can get a little at a time without you realising. You just compensate as they worsen, right. As for a test, I do not know I am afraid. Would be worth dropping Ashcroft a line and asking the question. |
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15th May 2023 9:36am |
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| LR90XS2011 Member Since: 05 Apr 2011 Location: bickenhill Posts: 3640 
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if your Def has traction control it should work seamlessly with the ATBs DEFENDER 90 TDCI XS,
I hope everyone is well and your land rovers make you happy |
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15th May 2023 9:41am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5842 
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From
https://ashcroft-transmissions.co.uk/product/ashcroft-atb/ One of the drawbacks of the Torque Biasing centre is that it is always necessary to have some load on one wheel per axle. if there a no load situation eg cross axle the wheel with traction would only see approx three times the load on the wheel with no traction ie nothing!!. To overcome this, as stated earlier, the Ashcroft Torque Biasing centre is fitted with some preload springs to provide some loading to the side with no traction in the event of a cross axle, where this pre-load is not providing sufficient traction to the other side then one favourite trick is to apply a small amount of left foot brake whilst applying more throttle. This manoeuvre fools the diff by providing load to the non-traction side which is multiplied by the Torque Biasing centre (approx 3:1) to the other side, the loss of drive attributed to the brakes which are acting equally on both wheels is overcome by the additional throttle. In a car fitted with Automatic Traction Control this braking all takes effect automatically and the Torque Biasing centre provides additional traction by multiplying the ATC effect. 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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15th May 2023 9:51am |
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