Make four copies of each and make sure that all of them are in the same sizes.
Build a bike ramp out of wood.
Check out this seth bike hacks kicker ramp build.
The back side of the deck should have the horizontal scores that will allow it to flex.
If you re building both the lip and landing you ll only need 1 piece of 1 2 inch thick plywood.
Then make around four grooves in each of the plywood ramps.
Now for the length you could measure the length of the curve with a piece of string or just blast on.
If you or a friend have easy access to a backhoe or other heavy duty digging equipment dig out a dirt jump.
Push against it and drill a pilot hole through the deck into one of the cross members either the left or right side so you can see where the cross beam is located.
If it s easier and more cost effective to acquire wood beams planks a saw nails and a nail gun build a wooden ramp.
Using the jig saw and the circular saw cut the plywood sheets depending on the s i ze of the bike ramp that you want to establish.
Get your ramp deck and align it on the frame.
Check out this kicker ramp build from undialed that is 1 5 high and 4 long.
2 cut groves in the ramp so you can place the support beams in example if the ramp is 30 inches 76 2 cm from the bottom to the take off point cut groves every 10 inches 25 4 cm.
Things to keep in mind.
How to make wooden bike ramps.
Building a dirt bike ramp is no joke whether you re constructing it out of wood or digging it into the ground.
Check out sam pilgrim s portable kicker ramp build.
This is another portable diy kicker ramp but with a little more height to it.
Take a large piece of wood and cut 4 ramp shapes depending on how big you want your jump to be.
This is what a standard piece of plywood measures when you cut it down the middle lengthwise.
This video also teaches you how to use the pythagorean theorem in building ramps.
Measure the width of the ramp and cut the 9mm plywood to suit.