[Jim c]

I have been moving through the front suspension on my RF.
I have to say it has been the most time consuming projects on the car so far.

I have made another set of arms with ball joints to give travel and all is going well.
The reason for this post is to share a technique that was on a earlier post about bump steer testing with a laser pointer.

I gave it a go this morning and I have to say it is much easier than dial gauges.
I set the laser on the hub and shot it 90 deg off the centre line of the car.

I put some lines on a cardboard sheet as a guide, I taped it to a gas bottle and went through the motions.

It took hardly anytime at all to work it out because it is black or white.
With the dial gauge method as the wheel travels up you have to subtract the camber gain and I find I have to keep checking the direction they are rotating as to whether it is toeing in or out (or maybe its just me).

I kept shimming the arm and could see the changes with a 1.6mm washer thickness.
It took about 15min and I checked it after with the dial gauge and it had .006" toe in over a 3" range 1 down 2 up above and below it is still respectible.
I am resigned the rack is to long in the body (thats life).
I thought I may get it closer with the dials but that was not the case it was as good as it was going to get.

I thought I would share the results as it is effective and cheap and to be honest way easier to do.

The card has toe in and out a centre line and some height datums.
I set these by moving up 25mm at a time and making a mark on the card.
My laser shoots a line so I put tape over the front a poke a pin hole in it to make it easier to read.
I took the tape off for photo purposes.

Jim