 | Home > Maintenance & Modifications > fitting ARB Air lockers for Puma |
 
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it was difficult at the time I posted that, sat in the passenger seat of J-Lo belting round the M25
| SteveS Member Since: 05 Oct 2010 Location: Devon & Berkshire Posts: 388   
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So in answer to the earlier question, I specifically bought a truck with no TC, when I fit the front lockers it will be with Ashcroft HD halfshafts and CV joints. I'll probably use the front locker once in a blue moon but at least I'll know that I can lock the whole drivetrain should I wish.
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14th Oct 2010 6:18pm |
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| BigMike Member Since: 13 Jul 2010 Location: Lancashire Posts: 2253 
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Surely though if you remove the relay for the TC (or fit a switch to turn it off/on), fit a rear locker only, then you're all set? What would be the issue with that set up?
What I dont understand is why you would need to engage your (normal) difflock in the set up above, since your rears would be turning at the same speed anyway, and those rears would maintain your momentum even if one front was spinning? another question - if you fit front and rear lockers, then surely you dont need to mess around with the TC at all in terms of removing the relay or turning your off switch because the wheels would constantly turn anyway? oh and why would you want to be turning corners if you did have both front and rear air lockers engaged? |
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18th Oct 2010 11:29pm |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2645  
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If you don't lock your CDL, the rear axle will not get any drive if any of the front wheels lose traction  |
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19th Oct 2010 8:35am |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8065  
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^^^ what he said. Cheers
James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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19th Oct 2010 9:18am |
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| BigMike Member Since: 13 Jul 2010 Location: Lancashire Posts: 2253
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Gotcha.
So why not just have a rear locker and forget doing the front? Would that create any issues with the TC system? |
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19th Oct 2010 9:25am |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2645
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Apparently if you lock the CDL & RDL and still have TC, the front driveshafts take a pounding and may snap when you lose traction on the front wheels. |
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19th Oct 2010 9:29am |
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| BigMike Member Since: 13 Jul 2010 Location: Lancashire Posts: 2253
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I just had an email from Dave Ashcroft at Ashcroft Transmissions, and he says that if you have a rear locker only there is no issue re traction control at all.
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22nd Oct 2010 4:11pm |
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| BigMike Member Since: 13 Jul 2010 Location: Lancashire Posts: 2253
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and another email from the head of technical at ARB in the States who says the same thing...
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22nd Oct 2010 5:41pm |
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| Sonic3d Member Since: 28 Jan 2008 Location: Ross on Wye Posts: 1505 
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Trust me it will break bits with TC and a rear locker
 how can the Yank comment? They don't have Defenders with TC over there before you ask how I know, it broke my front diff in the bottom of Morocco this August. |
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22nd Oct 2010 8:50pm |
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| BigMike Member Since: 13 Jul 2010 Location: Lancashire Posts: 2253
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Well, "the Yank" as you so graciously put it happens to be the head of the technical side of ARB, and since ARB lockers are not just fitted to Landrovers, but to many other vehicles both with traction control and without, I'm sure he knows a fair amount about it. I'd have also thought that the owner of Ashcroft transmissions might just know a thing or two about it. Is it at all possible that you broke whatever it was you broke using too much gas, doing something daft, or something you just should not have been doing?
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22nd Oct 2010 9:01pm |
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| Sonic3d Member Since: 28 Jan 2008 Location: Ross on Wye Posts: 1505
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Just trying to help
 learn the hard way then |
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22nd Oct 2010 9:03pm |
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| MrFlips Member Since: 27 May 2009 Location: Cardiff Posts: 682  
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Personally speaking, if both Andrew and Matt say not to do something in a Defender then I'll bow to their experience and not do it. Peter
2008 SWB Truck Cab 1952 80" Soft top |
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22nd Oct 2010 9:49pm |
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| BigMike Member Since: 13 Jul 2010 Location: Lancashire Posts: 2253
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Happy to listen and take advice, but when the guys who make and fit these things are saying something different, what do you do?
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23rd Oct 2010 8:36am |
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| leeds Member Since: 28 Dec 2009 Location: West Yorkshire Posts: 8582
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How quickly does TC work?
If a wheel just has daylight under it, wheel spins, tyre hits ground. Does TC work that fast on first application to completely stop all wheel spin? Not talking about having 6' of daylight under tyre. If you have good grippy tyres and grippy ground, I could imagine a vehicle with TC breaking half shafts/diffs if you become slightly air borne as TC might not have time to respond quickly enough. TC on our D2 does appear to have a time lag. So what is the response time given for TC on Pumas? Brendan |
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23rd Oct 2010 9:01am |
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