Hi Tech Laser Bump Sreer Gauge

[sgo]

For about $12 at your local electronics store you can get a "Laser Pointer" and with a rubber band, some tape and a sheet of chip-board you can have your very own bump-steer gauge.
Perfect for checking that rack installation!

If all is well the dots you mark, through the suspension travel, should all be in a straight line.

[Ed]

Hey SGO,

that's a neat idea.

the set up you have there looks interesting too

Cheers

Ed

[Dr_Terry]

Hi sgo.

The set-up you have there is quite good, but you mention that all the dots should be in a straight line.

The line should also be dead vertical. If the line was straight but at say a 20 degree angle you would still have bad bump steer.

It's actually probably MORE important that it be near vertical than actualll dead straight.

Dr Terry.

[sgo]

Thanks Dr Terry,
So if the line is at an angle, with the ride height point in the centre, then you would have toe-in above the centre point and toe-out below the centre point, for example?  ?  ?

[Dr_Terry]

Hi sgo.

Yes, exactly, you do not want the line to be anything other than vertical, otherwise you will have toe variation on suspension travel, which of course is what bump-steer is.

Dr Terry.