Outer Limits 4x4 Board

did a quick search and couldnt really find any information about this, I want to know what the pro's and con's would be of mounting the shocks ( more than likely fox air shox ) a thrid of the way up the lower control arm.


NICK

isn't this commonly done in the off road racing circles on the trophy truck rear ends ?

Think I seen this done on a red Isuzu MU with Patrol diffs only the shocks were on the front radius arms arms not the lower rears.

im running my 14" bilsteins in the front to my lower control arms. they are working fine, but i have them mounted right down the end.

the further the shock mounts from the spring the more leverage the weight of the car will have on the shock - so the firmer you'll need... plus depending on flex, length might be an issue.

alien wrote:the further the shock mounts from the spring the more leverage the weight of the car will have on the shock - so the firmer you'll need... plus depending on flex, length might be an issue.

Also, the further up the control arm it is mounted the stronger the control arm will need to be.
Peter.

Lots of potential travel depending on how far along and what angle you mount them.
Go to the foa site and have a play or cruise pirate.

I thought about it on my new car and and the geometery, valving and spring rates did my head in. The posibilities to get it soooo wrong are endless.

But if you got it right

Another advantage of this is you can run a shorter travel shock if mounted on the arm and will still get decent travel.???
I am pretty shore that 1 mad (Greg) has played with this set up and will have every pro and con of this set up. If i remember right Greg and v8zuki had this on a truggy rig they set up years ago (back when Area 54 was secret squirel stuff and passed around on vhs.)

Basically i was looking at going from an 18" shock back to a 10 or 12" shock in this setup for a number of reasons and didnt want to chop the chassis off and work the rest out later to find it is all to hard.
I was aware of the points raised and wanted to know more about the effects of body roll, anti-squat and weight shift. what calulations should be done differently or is does the basic principles remain the same.


I do realise this is all alittle vague as it is dependant on vechile dimensions and weight but im only looking for generalisations at this stage.


NICK

Basically i was looking at going from an 18" shock back to a 10 or 12" shock in this setup for a number of reasons and didnt want to chop the chassis off and work the rest out later to find it is all to hard.
I was aware of the points raised and wanted to know more about the effects of body roll, anti-squat and weight shift. what calulations should be done differently or is does the basic principles remain the same.


I do realise this is all alittle vague as it is dependant on vechile dimensions and weight but im only looking for generalisations at this stage.


NICK

My car run this set up.... and I havn't had any dramas

Travel is good it will drive it own wheel base on a 30degree travel ramp

and it seemed to go well with the speed sections in the Logan Challenge

http://www.outerlimits4x4.com/ftopic95576-0.php

The springs are standard rover (no lift)

STIKA wrote:
The springs are standard rover (no lift)

It is amazing how great and versatile the standed rover springs are.

So what are the extended length of your shocks then Brett?