Rear camber / lowering

Any issues relating to suspension, steering and brakes.

Rear camber / lowering

by ice man » Sun Jun 25, 2006 7:59 pm

I'm considering lowering my 16v 4x4 (91) about 30-40 mm

Can anyone tell me why people fit camber reducing bushes? I heard that lowering the car increases the rear camber (increasing the effective rolling radius of the rear tyres then overloading the VC in the TXB)

I don't understand how this can be the case as the rear suspension is independant trailing arms. The camber should not really change noticeably...

Also, what springs and dampers would be reccomended for a sensible not tooo hard ride..
ice man
 

by BlackKnight » Sun Jun 25, 2006 8:58 pm

camber is big as standard to start with - min 2, max 3 degrees AFAIR.

point of the independent suspension is to increase camber when compressed - when going into a curve, the outside wheels/suspension compresses and it is nice for a suspension to increase camber in that situation as it is good to have opposite camber for grip.

now obviously if you compress the suspension by lowering the car(because that is what you are doing) you will have the increased camber all the time - on both sides.

the front isnt affected as much as the rear. the front is a clean mcpherson design and doesnt change camber that much when compressed. the rear is a bit different, even though essentially the same, the wishbones are different and move in a weird way to increase camber when compressed.

why this is so i cant understand. the front is heavy and should need more camber in bends. the rear tyres will not flex nearly as much as the fronts which carry the weight of the engine/gearbox/everything.
but regardless of my babble, this is how it is on a cally.

anyhow, you may still be just within "factory" limits when lowering 30-40mm..
and if you're within factory limits, there's no reason to worry about the TX box.
besides, camber doesnt change the rolling radius THAT much. i think these stories are a bit blown out of proportion. not saying they're completely false but... having rear tires 0.2 bar less than fronts also changes rolling radius and noone ever mentions that, lol.
BlackKnight
 

by Rusty_CallyT » Sun Jun 25, 2006 9:21 pm

the RR from front to rear is always slightly differant to keep the VC a little tight so the tyre pressures arent an issue if set correctly
Rusty_CallyT
 

by Tits&ass » Mon Jun 26, 2006 4:32 pm

I lowered my 16v by 30 -40 mm. Havent noticed any serious bad wear yet! Been about 7k since lowering.

I used Eibach's (not too harsh) with standard shocks, seems to work well on the twisty stuff, alot better then the standard setup. It is a bit bobby on the motorway as the shocks are standard, but who cares about motorways, its all about corners and rolling.

Too be honest if your lowering 30- 40 mm dont worry about the camber!!! (others will prob say different mind)!
Tits&ass
 


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