Clever stuff this Silicone Fluid.
I wish I could react in a tenth of a second.
S.
Thats why, in some ways, it is better than difflock.
. The electronic version is even better, because it takes into account acceleration, lateral G force and a few other bits as well.
jamesmartin
Well-Known Member
jamesmartin
Well-Known Member
why would it be better than diff lock in your opinion ,i know why i think it has meritsThats why, in some ways, it is better than difflock.
reaction time primarily.
ideas....
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jamesmartin
Well-Known Member
difflock has no reaction time just physical lock ,the advantage is having drive to both axles while still been able to steer without geting excessive wind up ,though through viscous the system has allways some wind up but manageable by the vehicle running gear until it stiffens excessively or seizes
yes it does, James - you have to remember to engage difflock :rolly:.
a VCU or an electronic version can be always "engaged", without suffering wind-up.
Diesel Do
Well-Known Member
jamesmartin
Well-Known Member
the whole point of diff lock is to engage it before getting stuck as its better at keeping you going that getting you out ,god off road drivers would know that ,so point still stands , reactionary diff locking systems as used in tractors etc since the 80s is obviously better as steering isnt effected and torque distribution can be altered per wheel and can apply to all 4 wheels , t/c is good but only works on braking opposite wheel so is limited somewhat
DD3
New Member
Haldex 3rd Generation as fitted to FL2 - 'The result is used exclusively on Freelander 2, and pre-emptively engages four-wheel drive quickly and completely. An improved high-pressure pre-charge pump charges the hydraulic system as soon as the engine is started, allowing for full-time 4x4 from rest. It also reduces the time taken to achieve full torque once wheel-slip has been detected – within 15 degrees of wheel-slip rotation (compared with 50 degrees of wheel-slip rotation with the previous generation Haldex). The Freelander 2's Haldex unit is designed to allow up to 1500 Nm of torque transmission. An accumulator also speeds up the unit's response. Full torque transmission can be achieved in 150 milliseconds. In effect, the new Haldex coupling gives the benefits of full-time 4x4 and the efficiency and fuel economy of an on-demand system'.
Personally, I would rather have an on/off switch or lever and dump all the fancy sensors but I dont think this is in LR's development plans.
Personally, I would rather have an on/off switch or lever and dump all the fancy sensors but I dont think this is in LR's development plans.
jamesmartin
Well-Known Member
a reactionary system with sensors etc is allways going to be better than 3 locking diffs just from the fact you have drive to all 4 wheels when steering
DD3
New Member
Being on all the time just causes too much stress in the rest of the transmission.
jamesmartin
Well-Known Member
only when it stiffens which is bought into been quicker through reduction in drive to rear wheels
DD3
New Member
True, but your whole transmission needs to be in top condition to avoid heavy wear down the line. BTW, I'm not anti VCU as such and don't work for Haldex. I just think that switchable 4x4 ie off or on, however supplied, controlled and switched is better.
jamesmartin
Well-Known Member
yes i would too ,vcu is better than a center diff lock but not as good as more sophisticated system
WLJayne
Well-Known Member
I think we can all aggree on that. Having seen a D3 in action I'm pretty convinced of the merits of the newer systems. But for the price, te FL1 has impressive capability
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DD3
New Member
I think we can all aggree on that. Having seen a D3 in action I'm pretty convinced of the merits of the newer systems. But for the price, te FL1 has impressive capability
Agree - its the ability to switch and have best of both worlds that I'm after.
