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AndrewS

Member Since: 10 Apr 2007
Location: Hereford
Posts: 3708

2013 Defender 130 Puma 2.2 SW Rimini Red

20th Feb 2014 1:07pm

Porny
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Member Since: 31 Aug 2009
Location: Sutton Coldfield - West Midlands
Posts: 809

AndrewS wrote:
IRB
Can you tell us where its located? and why does it have one?

Yes.. I can...

Click image to enlarge

Was fitted when ABS system changed over to Bosch (wasn't there on the WABCO set up).

Not actually used for any function - but does give longitudinal acceleration info back into the ABS system. I'm sure this will be updated for later variants and the feedback actually used.

Ian

Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated

IRB
The home of the first modified Keswick Green 90 - and the first 2.4 Puma through both the 200bhp and 550Nm barriers.

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20th Feb 2014 1:22pm

jimbob7

Member Since: 06 Jul 2013
Location: uk
Posts: 2055

DSC is fitted to some of the trucks at work, all it does is brake one wheel (slowing you down) if it senses the vehicle is leaning,I assume it's speed related as I only every feel it kick in on (relatively) high speed bends (or am just not drivin fast enough round the yard

),personally I think it's over rated and will just end up being something else to fix.Of course some peeps will now think they can keep up with a Porsche thru the twisties and will roll it accordingly

. Pov.spec,ftw. 2006, 110,TD5.

20th Feb 2014 2:48pm

UtilityTruck

Member Since: 09 Jan 2014
Location: Oxford
Posts: 463

AndrewS wrote:
UtilityTruck wrote:
The existing wheel brakes are used for the dsc. Wheel speed sensors are already there for the abs, as I said there will be a control box and some sensors. Then it's just tuning work.

Yep know that

My point is DSC requires (in addition to what you mentioned):- yaw rate, longitudinal and lateral acceleration, vehicle speed, engine speed, throttle position, brake pedal position/force and steering angle.

As far as I am aware (I could be wrong) the current model can monitor the following:- vehicle speed, engine speed, throttle position, individual wheel speed (with ABS) and brake on or off (not brake force).

So
The yaw rate, this would involve the fitting of height sensors, one on each corner.

Longitudinal and lateral acceleration forces would be a simple box of electrics.

A steering angle sensor will have to be fitted to the steering column.

The D3, D4, FFRR and RRS also have the ability to 'sort' the suspension when the DSC kicks in. Is the 15MY going to have this as well? This would require air suspension or some sort of lever system so stop vehicle roll.

This all seems a lot of work if the vehicle is going out of production.

If they are going to fit all of the above, lets hope that they produce lots of parts as I can imaging quite a few people will want to 'up grade' their existing vehicles.

A Defender with DSC....... unless you can turn it off say good bye to play days.

As I said in the previous post, you'd need to add the accelerometers and yaw sensor. The yaw sensor doesn't rely on suspension travel, it's a measure of angular yaw. It's a rate gyro such as those used in model helicopters. This sensor pack could probably be lifted from another model.

The brakes are the only system output used for dsc/roll over. Air suspension, if fitted could be used- but it's not required. Te brakes would be used individually to adjust the attitude of the vehicle as the system sees fit.

20th Feb 2014 3:37pm

UtilityTruck

Member Since: 09 Jan 2014
Location: Oxford
Posts: 463

As per irb's post it sounds like most of the hardware is already there, including the yaw sensor.

In which case it could potentially just require a software flash once the calibration work is done.

I don't see this as expensive enough to suggest production is continuing past the point LR have stated.

20th Feb 2014 3:41pm

AndrewS

Member Since: 10 Apr 2007
Location: Hereford
Posts: 3708

Fair play this is a good forum, thank you all for the info

20th Feb 2014 4:01pm

SteveR

Member Since: 29 Jan 2014
Location: Easy Anglia
Posts: 3

2014 Defender 90 Puma 2.2 XS CSW Keswick Green

I'm new to the forum - hello Gentlemen! - come from a Motorsport background and am now driving my third Defender (kedgewick 90XS puma). One reason I keep coming back to Defenders is that they are a delight to drive - because with the exception of ABS - the driver is responsible for all of the primary inputs. In an era when manufactures find it appropriate to offer electronic driving aids to 70bhp hatch backs, the Defender is refreshingly different in this respect (as well as many others). Quite why EU legislation feels it necessary to protect drivers from themselves is and has always been beyond me.
In doing so, they are slowly killing the art of driving.

As an aside. I must say how friendly and helpful this forum is compared to the more testosterone filled sports car alternatives ( I am a specialist Porsche 911 driver). Testament I think to the jolly decent chaps and chapesses who are attracted to the wonderful Landrover Defender

20th Feb 2014 6:04pm

Cheshire110

Member Since: 26 Jul 2013
Location: Cheshire/London
Posts: 2760

Agree. Welcome

Cheers, David
Land Rovers of all shapes S3 onwards… Daily is a 110 V8.

20th Feb 2014 6:10pm

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