So how do I increase my tyre size without reducing articulation?

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Originally Posted by uninformed

there is absoluely no reason a 2 inch spring lift should REDUCE articulation... if done correctly it should INCREASE articulation

important factors:

spring lenght
spring rate
shock travel
shock lenght open
shock lenght closed
mounting height and position of shocks
extend brake lines

other little things that should be looked at:

retain springs, upgrade rear trailing arms, haultech slotted radius arm bushes.

bumpstop clearence... this can be changed to adjust where your up and down travel is...

food for thought

Serg

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just incase this was missed on the first page

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Originally Posted by r.over

I take it that you are now saying that the shock does not limit articulation, it only limits downward movement of the axle. As pointed out previously, if you have 250 lb springs or greater, you are unlikely to obtain any more than 8 inches in movement in your axles. Standard shocks have greater than 8 inches of travel. Therefore, depending on how you have it set up, the shock may not limit your articulation.

I dont think you even know what your on about here.

The absolute total articulation you can get with Shock fitted is the travel of the shock unless it hits the inner guard or bump stop first.

So you are saying that you can fit up to 35 inch tyres with no spring or body lift. You only need to change your rim offset and fit flares. That's interesting as I have never heard that before.

Ummm a lot of the comp truck guys have been doing it for years cutting the guards and having heavilly offset rims to retain turning circle as well as not hitting the inner panel of the inner guard.



I always thought that the inner guards were connected to the body and would therefore move when you raised it. I will have to go and have a better look.

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Look Pal........You cant be this dumb really, yes a body lift will lift the top of the inner guard....that is correct but it does nothing for the side and that is what fouls on articulation not just compression with taller tyres

If you want to know something then ask a question, if you want to suggest something then suggest it but dont bag people who do this sort of thing on a regular basis and make out like you know more because if you think a body lift is the be all and end all then you are 100% wrong.

A body lift has it's uses, the main one being for cheap skates to make their truck look taller for very little money and little work or to lift the arches so you dont have to cut out the guards too much but other than that.......oh and the centre of gravity thing that you flamed me with in another thread which I think is a mute point when I travel with 100kgs of tent and rack on my roof with my 30mm spring lift on 32" tyres and I havnt dropped it on it's side yet.

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Originally Posted by r.over

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or maybe there is a reason why you cannot simply extend the length of the spring. Something to think about.

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really ?

Use a better spring maker.
If a local company can't do it, use Eibach or Hyperco. They have a far greater selection of wire diameters than anyone else in the industry.
If it can't be done, they'll tell you.

Funnily enough I was able to buy 17.2" 220lb/in springs off the shelf locally to replace my OE front 14.8/15.3" 225lb springs and they easily max out the near 10" travel shocks in bump and rebound.

I think that you'll find that up until the last couple of years that just about all comp 100" Rovers were running roughly a 2" body lift to clear 35" tyres with a 2ish" suspension lift. These days they are moving to Nissan axles for width and reliability and are running greater lift in the suspension also which may relieve the need for a body lift with 35's, but they just run even bigger tyres. Even the D2 with is bigger and better wheel guards will max out at about 33" with suspension that will still contact the standard bumpstops.

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Originally Posted by rick130

really ?

Use a better spring maker.
If a local company can't do it, use Eibach or Hyperco. They have a far greater selection of wire diameters than anyone else in the industry.
If it can't be done, they'll tell you.

Funnily enough I was able to buy 17.2" 220lb/in springs off the shelf locally to replace my OE front 14.8/15.3" 225lb springs.

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I dont know if they are still around but Bayswater spring works once built a set of springs for my mates 60 series coil conversion which were just under 2' long before fitting.

You want wheel travel, that could nearly have the axles 90 deg to eachother on ramps and this was well before all this tough truck stuff and he bult it for his own fun on his farm as it couldnt be registered with the big block chev and massive truck tyres from some euro 4wd truck (probably a MAN or something like that).

Anything can be done, it depends on money and the will to look outside of the circle.

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Originally Posted by Slunnie

I think that you'll find that up until the last couple of years that just about all comp 100" Rovers were running roughly a 2" body lift to clear 35" tyres with a 2ish" suspension lift. These days they are moving to Nissan axles for width and reliability and are running greater lift in the suspension also which may relieve the need for a body lift with 35's, but they just run even bigger tyres. Even the D2 with is bigger and better wheel guards will max out at about 33" with suspension that will still contact the standard bumpstops.

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I know of 1 rangy that ran outback chellange........god knows how many years ago that ran landy axles and no body lift but massive spring lift and 35" rubber.

I would say they extended the bump stops on the front but there was also no inner guards on the back as it was a 2 door tray so no need on the rear.

It was orange and ran Ridepro suspention sponsership I think the owner/drivers name was Adrian but I may be wrong.

I say I know of but I only know of second hand and havnt seen it myself but it was brought up in a similar convo with some mates one night at the workshop.

Geeez, Black Betty , you must be totally confused by now.

They have you with a comp truck with 35s , with 4+ inches of lift.

Just the thing to lift her a bit and not lose articulation.
Regards Philip A

r.rover...if you want to keep the standard rangie springs and just rase it 2"s why not put a spacer or two on or under the springs??:)

CHEERS TIM.

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Originally Posted by PhilipA

Geeez, Black Betty , you must be totally confused by now.

They have you with a comp truck with 35s , with 4+ inches of lift.

Just the thing to lift her a bit and not lose articulation.
Regards Philip A

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Yep thats what i was just thinking:D

My disco had heavy springs when I bought it. But offroad it would still hit the bump stops from time to time.

So I would say that the bump stops limit the upward travel, even with heavier springs for 2" lift.

Stock sway bars don't limit upward travel, but the stock rear sway bar on a disco I limits downward travel (before the stock shockies extend fully).

Standard length shocks or the sway bar limit downward travel.

So 2" suspension lift should not limit articulation.

There is a lot that can be done to increase articulation.

BTW I have soft springs that give at least 3" lift on the disco now. The ones I use on the rear have a 490mm free length. Fronts are 470mm free length. Wire diameter of both is 16mm. Installed lengths are approx 370mm.

These were off the shelf for landcruiser. This is the best mod I have done to the disco for offroad - even when I had stock length shockies.