Outer Limits 4x4 Board

considering putting a 3-link on the front of my hilux to match an A-frame on the back, decided against 5-link for various reasons

just wondering what everyone else thought, its main priority is hardnut weekend off road use and hopefully some comps, but it will still be putting in a few road miles as well

what do you all think, DO's and DONT's, PRO's and CON's etc etc

also when setting it up, on all the set-ups i've seen the 3rd link, the top one is always on the passenger side, just near where the panhard attaches to the diff.......thats not a hard and fast rule is it???
theres no problem mounting it on top of the diff pumpkin is there????

Elmo wrote:considering putting a 3-link on the front of my hilux to match an A-frame on the back, decided against 5-link for various reasons

just wondering what everyone else thought, its main priority is hardnut weekend off road use and hopefully some comps, but it will still be putting in a few road miles as well

what do you all think, DO's and DONT's, PRO's and CON's etc etc

also when setting it up, on all the set-ups i've seen the 3rd link, the top one is always on the passenger side, just near where the panhard attaches to the diff.......thats not a hard and fast rule is it???
theres no problem mounting it on top of the diff pumpkin is there????

The single upper link can be offset to counter torque reaction during acceleration.

During acceleration, the front upper link is in compression. So if the link slopes up toward the chassis it should be offset the right hand side of centre to countract the torque. If it slopes down toward the chassis it should be offset to the left hand side of centre.

The amount of offset to exactly offset the upper link depemds on the spacing of the lower links and the reduction ratio of the crownwheel and pinion in the diff.

On centre is best for hard braking so don't be too concerned about how much to offset it - use the minimum to clear stuff (like the engine sump). Just about everything do is a compromise.

Bush65 wrote:During acceleration, the front upper link is in compression. So if the link slopes up toward the chassis it should be offset the right hand side of centre to countract the torque. If it slopes down toward the chassis it should be offset to the left hand side of centre..

Exactly wat bush65 said. just wanted to clarify that right hand side is Drivers side and left is passenger (sum times people imagine viewing from the front)

Another thing is if your using single upper link build it strong, cause when or if the vehicle is bouncing it gets all the compression loading. Make sure both mounts (on diff and chassis) are strong.

Ow and post lots of pics

ive got my upper link to the drivers side and its fine.
the reason i did it this way was for clearance. it would come very close to the exhaust if put on the passanger side.


as said make the top link decent in strength.

was wondering if this will work better than whats there on the rear.
currently pajero radius arms+ panhard--

thinkin on cutting of the radius arms after the 1st bush or making new lowers
and placing an upper link where the level is in the pics





will this work better than just the radius arms?

make the chassis mount for the top link in the same plane as the lower links (imagin a bolt right through the three mounts)this is the princible that Glen dobbin has with the A frames. it works like a motor bike swing arm and the radious arms on an 80. keeps the pinion uni pointing at the output flange too(need cv or double cardinal on output flange)

Chad

if this is in the rear go a triangluated 4 link, it will work way better than what you have now.

http://www.4wheeloffroad.com/techarticl ... index.html

read and understand this, get the 4 link calculator and start measuring, searching pirate will give you plenty of ideas as well.

What ever you use for the lowers make them strong, avoid using tube for them, if you insist on tube, weld a thick fin along the top of them.

Making the uppers adjustable will allow you to play with your pinion angle but try and get as close as possible to to the right angles (ie both flange faces parallel if your running unis each end)