RCU Forums - jump building

If you are wanting to spend some $$ on it, and leave it outside, use marine grade plywood, otherwise, just use whatever. I would try to build it longer with a more gradual slope that way you can control the car easier as it hits the ramp and the car won't have a tendency to have bump steer when it hits the steep angle....the longer and higher the ramp, the more air. If you make it shorter and steeper, you won't get as good of results in my opinion.

As a bonus, you can paint the ramp, and while it's wet, sprinkle a little sand on the ramp surface to give it a rough texture and keep the tires from losing grip on the slick plywood. This will also protect the ramp from rain, etc.

I would also try to make it as wide as possible so that you don't run off the side of it, and so you can do tandem jumps (two cars side by side) and when you do a tandem jump GET SOME COOL PICS!!!

Later