Simple Race Ramps test gauge
Here's a simple ramp test gauge that you can make from a piece of scrap cardboard kicking around the garage.
Materials:
Corrugated cardboard 29.5" long by 6" to 10" wide.
Tools:
Sharp utility knife
Tape measure
Instructions:
Cut the cardboard to a length of 29.5". This is about the length of a flap on a 30" cardboard box. Mark two lines across the width of the cardboard. One line should be 5" from the end of the cardboard, and the second lines should be 1/2" from the opposite end of the cardboard. The two line should be 24" apart. Fold the cardboard 5" from one end and 1/2" from the other end so that it forms the shape of a ramp. It helps if the corrugations run parallel to the width of the cardboard.
Using the ramp gauge:
Place the short end of the ramp up against the front edge of the tire. If the 5" high ramp gauge clears the front bumper and the any other body work then the standard 56" or 67" Race Ramps with a 10.75 degree incline will work with your car. If the ramp gauge is too high, cut the 5" length to 3.5" and try again. If the 3.5" ramp clears, then the standard Race Ramps in combination with an XTender ramp will work with your car.
A new 2-pc, 2-stage incline ramp will be available soon and can be used for cars with very low ground clearance. If the 3.5" high ramp gauge has the necessary clearance, then the new ramp will also work for your car. Basically, the 2-stage incline ramps have an integrated XTender.
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