rear suspension question

[whits]

hello
iv noticed recently while driving my 300 tdi the rear seems to bounce a little too much,
after getting under the n/s/r damper is wet and leaking,
it has +2 bearmach springs and +2 decarbon dampers on and -2 top mounts
my question is do i get more of the same or should i get longer dampers, it get used offroad a bit but the more travel the better, right.
also where can i get longer dampers from ?
thanks in advance mark

[Disco-Ron]

If you have -2inch damper mounts, then getting longer shocks will limit even more the travel on the axle, as it is, the mounts already stop the axle going 'up' as far as it otherwise would......

[Range Rover Blues]

Ah, the shocks bottoming out, which might explain why they are bust :-.

[whits]

what is recommended then, as is with +2 bump stops or longer dampers with different mounts, i want a good bit of movement without spending a load of money,

[whits]

i don't know about mounts limiting upwards travel, they go quite away into the arch but don't touch will put some pics on later let me know what you think

[Range Rover Blues]

Lowered mounts don't really give more travel in the same way that longer dampers do, they just move the available travel further down. 

With standard dampers this is fine because there is 2" of travel wasted by the design (LR engineers simply put the damper at mid-travel at ride height).

I'm watching with interest because I have some -"2 mounts to add to my lifted truck with plus 2" dampers and I was assuming I'd need longer bumps just in case I ever overcome the springs and bottom out.  In truth the truck will sit on one wheel and still be 2" clear of the bump stop, but this is how it should be.  What I don't know is whether the spring will coil bind before it can reach a stndard bump stop the way that normal springs with spacers on them do.

[clbarclay]

The bumpstops should only touch the axle in extreame circumstances, so if lower the bumpstops would cause them to touch the axle frequently then raising the mounts would be a better option.

iv noticed recently while driving my 300 tdi the rear seems to bounce a little too much

If this bouncing is not to do with a serious problem such as dampers bottoming out or axles hitting bumpstops then it is likely due to a miss match of springs and dampers.
One of the issues with damping is over damp will cause problems as well as under damping, and to complicate matters further the damping ratio will change with spring stiffness. It should be possible to eliminate the bouncing by either changing the spring stiffness or dampers. Knowing just what to replace them with is the difficult part, which reminds me I really out to be getting on with some coursework :(

[whits]

its only been bounsing over the last week or 2 realy, was fine before, i think its the leaky damper that is the problem
what im after is good articulation on the rear, what are the best setups on the rear whithout going to the expense of the likes of scrapiron's extreme kit

[whits]

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[whits]

help cant even see my own pics

[Range Rover Blues]

If you go too twisty at the back without sorting the front out match you risk ending up with an unstable truck, so once you'vegot the longer shocks and stuff it's time to look at the front.

[clbarclay]

its only been bounsing over the last week or 2 realy, was fine before, i think its the leaky damper that is the problem
what im after is good articulation on the rear, what are the best setups on the rear whithout going to the expense of the likes of scrapiron's extreme kit

Ah so that is just lack of working damper :doh:

For good artciulation out of a box on a LR the Gwyn Lewis challenge kit is effective and sensibly priced, but on a discovery or range rover classis the increased articulation can cause rubbing issues on the inner rear wheel arches. Due to rubbing issues I' still running a "tempoary fix" which is to use shorter dampers on the rear with the Gwyn Lewis mounts, but still have the articulation on the front which is set up pretty sweet now with 11" travel dampers. So despite near standard rear articulation, over all articulation is still noticeably more than a standard LR.

[whits]

thanks will check that out

[Range Rover Blues]

Me too, the front end of mine is what lets it down.