Down-travel without Up-travel and keeping it low

[-Nemesis-]

My 4Runner (2nd Gen) starts going under the knife soon. At the moment it's pretty high with about 3-4" spring lift and 2 " body.

I'm putting in a 5 link coil set up in the front and will probably tweak the rear end for a bit more movement.

I want to get it as low as possible but still run the 35" tyres. Now the biggest problem with the tyres is the scrubbing on up travel (and steering) This is no drama with the current lift and lack of IFS travel.

My question or wonder is; Can you build a truck which has awesome articulation, but have the available up travel limited considerably? Leaving enough for on road dynamics and to allow the axle to rise some as the other side droops, but on the whole prevent alot of the uptravel so i can keep it low?

Will this make it unstable somehow? This is my first built truck so any advice is apreciated.

I'm running something around 5" off set on the rims for width so the tyres can't really tuck into the guards that easily anyways.

ps... I don't want to cut the gaurds more than I already have and wil be both a daily driver and comp runner.

[TWISTY]

A lot of the buggys with airshox only run between 5-6" of up travel on a 16" travel shock, so I can't see it causing too much dramas......

[Rascal]

Easy, when you put the 5 link in more the diff front this will stop a lot of scrubbing.

RB

[-Nemesis-]

Thanks guys.

82 views and only 2 ideas?

[TRobbo]

With all the talk on new vehicle mod laws ATS in Geelong Vic are working on this type of set up at the moment. Can't tell you much about it but I understand Darren pretty much has a GU set up all sorted out. He may be able to give you some advice on how they do it???

[TWISTY]

Could always post your question up on here
http://www.pirate4x4.com/forum/forumdisplay.php?f=12

I'm sure it's already been done plenty of times in the states, so they might be able to give you better feedback.

[Tiny]

with the right coils and shocks set up with bump stops in the right places it is doable and could work quite well

[Trusa]

This is the idea behind what I am putting in the 80. Long shocks limit up travel on small lifts anyway (just make sure to move bupstops accordingly), the idea would be to get long soft springs so the springs stay captive and still put some pressure on diff at full droop but they don't provide much lift.

Ideally a variable rate would be the go with a very soft rate that merely pushes the diff down on axel droop but a firmer rate at the height the vehicle will be sitting for day to day driving manners. I guess experimentation would be the go with this unless someone has done it before? interesting to see what the ATS boys have come up with.

[-Nemesis-]

yeah I guess it would help it with the new laws as it will look lower and attract less attention. My main wanting for the idea was purely for stability though.

[Madmac]

you will just have to fab some bump stops. limiting the up travel will have some effects on flex though. should still work Ok though

[MUD EMPIRE]

It is an extremely good point about new laws pending. Whoever comes up with the goods on a "kit" that has articulation/downtravel without excessive lift will do very well. Im shure its already underway but not quite marketed yet. The laws will change for the worse re. lifted 4b's.
But it will be someone elses gain.

[redzook]

A lot of the buggys with airshox only run between 5-6" of up travel on a 16" travel shock, so I can't see it causing too much dramas......

more like 3 and 4

i have around 2 inch uptravel in the front of my zuk

[it works]

I have a 40 with 80 axels and standard 80 springs i set it up so it was low and it runs 37 mtr,s it has 2in' of up travel and 14in' of down travel. I have the suspension set up so the springs cant fall out on full travel but you can pull them out by hand if you need to, i cut the guards and moved the front axel forward so the tyres dont drag on the body. The down side i found is when the vehicle leans over on angles the suspension on the high side of the bank wants to extend and makes the vehicle lean over more so i connected my front and rear winches to the axel,s so i can pull the suspension back down that has worked reasonable well.

[professor]

My 4Runner (2nd Gen) starts going under the knife soon. At the moment it's pretty high with about 3-4" spring lift and 2 " body.

I'm putting in a 5 link coil set up in the front and will probably tweak the rear end for a bit more movement.

I want to get it as low as possible but still run the 35" tyres. Now the biggest problem with the tyres is the scrubbing on up travel (and steering) This is no drama with the current lift and lack of IFS travel.

My question or wonder is; Can you build a truck which has awesome articulation, but have the available up travel limited considerably? Leaving enough for on road dynamics and to allow the axle to rise some as the other side droops, but on the whole prevent alot of the uptravel so i can keep it low?

Will this make it unstable somehow? This is my first built truck so any advice is apreciated.

I'm running something around 5" off set on the rims for width so the tyres can't really tuck into the guards that easily anyways.

ps... I don't want to cut the gaurds more than I already have and wil be both a daily driver and comp runner.

It can be done. my hilux has around 200mm of up travel but for that up travel and low ride i had to cut the guards.as it sits it is around the same distance from the top of diff to chassis as a hilux with a 2' lift.(39.5 Irocs on 11"rims and 80 ser diff, thats alot of guard)
I found it easy to setup because i was able to adjust the coil over ride hight and after seting up that i was able to set the coil over hight eye to eye at the best posable hight.
now i run hydraulics, although alot of people laugh at them they are great for running the rig low and being able to jack the rig up when the low cog is a problem.

so the trick is to work with the closed lenght of the shocks and work back from there but it is hard if you dont want to chop the guards.measure twice and mod once the tape measure is your best friend.pushing the diff forward might help your cause too.

Chad

[ferrit]

upside down portals?