[Sankar]

Originally Posted by Sankar

I am looking for a compatible LSD for the Crysta and hope to put one in someday. I am not too sure about autolocker in the Innova because i don't know how it will behave on the street as its mainly an on-road vehicle.

And thus my interest in Crysta's rear axle
http://www.team-bhp.com/forum/offici...ml#post4057177

It took six long years since this quoted post but finally proud to say that this has been done, the first Innova (afaik) in the country with a non stock rear differential. It was a semi DIY project. Will start a new thread on this sometime later. While reversing into my home the vehicle don't spin one wheel at the ramp at the entrance, if it spins it spins both wheels

[viXit]

Originally Posted by SmartCat

Add the Rs. 1 Lac extra for the 4x4 gear, and you know why 90 to 95% customers opt for 2WD variants (even if that particular model has 4WD option).

And the ridiculous waiting
We got sick of waiting for the 4x4 to arrive and ended up buying the 4x2 storme. Was end of year and they couldn't even give a price guarantee citing new year new rates despite offering payment up front.

1) How much of an improvement in off-roadability can one expect from a Limited Slip Differential? From what I understand, Tata Xenon 4x2 has LSD. How good is it off-road?

Oh it's GOOD!

A friend has one, and another friends involved with the development of UVs has great things to say about it.

I myself have wished that the safari came with an LSD.
While climbing back onto the road from a side area, if the road height is too much, one of the wheel loses contact, where LSD could help by sending power to the wheel that has grip.

2) Any idea about safety & long term reliability of retro-fitting LSD? Quiafe seems to be very popular.

Lot of off roaders retrofit electronically/mechanically locking diffs to their cars and it's one of those parts that never gives them issues given nothing more than the regular oil change.

3)Are there likely to be braking issues (increase in braking distance, for example) or issues with tyre wear?

theoretically none.

since you lock the diff only when losing traction and a wheel spinning excessively,
the diff is effectively unlocked at all other times, behaving exactly like the car did before the modification.

I'd get it in a heartbeat if I didn't have my sights on a 4x4 soon.

Originally Posted by i_see

A silly doubt from my side
Just like a limited slip differential, Will an ESP ( electronic stability program as in vehicles sold in EU) also bail out a 2WD vehicle in the same tricky situations mentioned in the above posts ?

Originally Posted by SmartCat

In a 2WD atleast, I think both ESP and traction control reduces the vehicle's ability of handle slush/snow. Because these systems either brake individual wheels or cut engine power when it detects wheel slip.

actually the other way round.

Originally Posted by SmartCat

You got the first part right, but not the second part. ESP/Traction control might cut power to the slipping wheel, but will not send power to other wheel.

We took BHPian Shifu's XUV 700 into a lot of slush and it performed quite well for a car with no diff locks.



ESP and TC working has been brilliantly and concisely explained by some on this thread, we could feel the ESP brake slipping wheels individually to assist.
It feels exactly like ABS, a sharp rough screeching rapid engaging and disengaging noise.



It cannot send power specifically to a wheel, but since that slipping wheel is locked, remainder of power is automatically sent to the wheel with better grip.

Energy always follows the path of least resistance, and the resistance is what is altered by ESP

which is implemented like this :

Originally Posted by i_see

...... in a RWD car, if Left rear wheel is slipping, ESP should apply brake to that wheel and the power then goes to rear right wheel. The vehicle should be able to move and not get stuck.

Originally Posted by Sankar

...... While reversing into my home the vehicle don't spin one wheel at the ramp at the entrance, if it spins it spins both wheels

[Sankar]

This is a short clip I made after the lsd was installed. I'm not giving any throttle because there aint much place inside the yard to give throttle as it will just take off. The tyre shown in the video is 215/65/16 Wrangler Silentrac AT. While coming up the ramp at the gate (not straight ahead of the porch so always at an angle) without limited slip one of the tyres used to spin if i was too slow or the angle was off, but with limited slip i can crawl through the entrance on idle. Before limited slip if one wheel started spinning (be it 16" wrangler silentrac AT or 17" michelin primacy) i had to move forward and come back up slightly faster.

https://www.youtube.com/watch?v=oID_yU0XPGk

I am yet to make a better video, hope to do that soon and post a demo on a new thread with other details.

I have again changed back to 17inch on facelift alloys with Continental UC6 225/55/17 tyres. These tyres are pure street wheels but even with these tyres it will climb up the ramp without spinning a wheel on idle, but if throttle is given both tyres will spin easy (Silentrac AT in this scenario would not spin instead hooked up and pulled vehicle back with a jerk).

Options I had for this differential:-
1) Air locker
2) E locker
3) Auto locker (Auto unlocker to be precise)
4) Conical clutch LSD
5) Clutch plate LSD
6) Torsen LSD

Lockers and unlockers were not considered for this install, but only the limited slips.

[JoaTMoN]

I am confused about going for a RWD vs 4WD Isuze Mu-x. If I happen to end up getting the RWD, and I think about getting it fitted with LSD, where should I look for one? I live in the Southern part of Tamil Nadu.