Price: $500
If you're into mountain biking or BMX then this ramp will be for you. I made one of these a few years ago (twice as tall through) and I used it for the dirt jumps in my backyard. There was even a middle floor with couches and chairs in it. Anyway's, this ramp is only 8' tall but you can still get plenty of speed from it. Also, it isn't hard to make it taller by slightly modifying these plans. So get creative and go build yourself a drop in. Oh and don't forget to post pictures in our forum after you build yours!
What You'll Need
- Six 4'x 8' sheets of 3/8" plywood
- One 4'x 8' sheets of 3/4" plywood
- Six 4'x 8' sheet of 1/4" hardboard (masonite)
- Four 8' 4x4's
- Fifty 8' 2x4's
- Two 8' 2x6's
- something to cut the pieces with
- A pencil to mark your cuts
- Deck screws and a drill
- One tape measure
- The required safety gear
Cut List
|
MATERIALS CUT LIST |
|
| --- Description --- |
--- Dimensions --- |
--- Quantity --- |
| 3/8" treated PLYWOOD |
4' x 8' |
6 |
| 3/4" treated PLYWOOD |
4' x 8' (used for sides) |
1 |
| 1/4" hardboard (masonite) |
4' x 8' |
6 |
| 2x4 (treated) |
8' |
13 |
| 2x4 (treated) |
7' 10 |
25 |
| 2x4 (treated) |
~5' (For cross supports) |
10 |
| 4x4 (treated) |
8' |
4 |
Make the sides
Firstly, you need to construct the top deck of the drop in. You need to space the 7' 9" 2x4's 8" apart for maximum strength.
Attach top and bottom
To make this part easier, you can put the whole thing on its side and work on it that way. Just attach one 8' long 4x4 to each corner of the deck and screw on four support pieces.
Start framing the curve
In order to give the drop-in strength, you need to attach cross supports. Remember, triangles make everything stronger, so attach 2 diagonal cross supports on each of the four sides so that the drop-in is supported from side-to-side. Next you will need to attach the slope. Take two 8' long 2x6's and notch then out so that they fit snugly against the 2x4's on the corner of the deck. The measurements in this picture are just rough guidelines so you can make the ramp as steep as you want.
Finish framing the curve
This part is fairly straight forward. You just have to attach cross supports from the top to the bottom of the slope. They should be spaced 8" apart and each one should have 2 screws in each end. Also, attach a support that connects the bottom of the 4x4 to the bottom of the ramp.
frame the wall
Below is an image showing how to attach the first 2x4 that touches the plywood. It is important to never use a 2x4 on its weak side, which is why we've added an extra one to support it from underneath. This will prevent unwanted flex in that area.
Screw on the plywood
You should add a small 2x4 under each corner of the deck for extra support. This will ensure the ramp lasts as long as possible
Screw on the plywood
Screw on the first layer of plywood with the wood grain going across the width of the ramp. Remember to make sure that each edge of plywood always ends with a 2x4 underneath. You may need to add extra 2x4's to ensure this, or you can cut the plywood so that it ends where you want it to.
Screw on the plywood
Screw on the layer of masonite in the arrangement shown below. It is not necessary to add a layer of masonite, but it will give you a much nicer surface to ride on. Now that you're finished your ramp, you can ride it! Have fun.
*Tip: If you don't feel safe on top of this ramp then you can follow the same technique used in the 4' mini ramp instructions to attach a sturdy railing.
Leave a Comment
it wouls be a little safer with rails & its very unstable
@jaybmx1234: Did you build it? Because I can assure you that it is stable enough.
i would like to build one of these with this height but then have a dirt tabletop after it. you know far enough apart though where you would have enough speed. how tall would you make the dirt ramp and how long of a gap between the jump and the landing....again this is for dirt the tabletop will be and its for bmx.
Well since dirt jumps aren't permanent I would recommend building the drop-in first to find out how much speed you get, and then build the jump from there.
I would say this ramp would generate enough speed for a 3' high jump with a 6' to 8' gap without pedalling.
see if i want to build something like this i need to pay 500$ for all the materials
nice!!! see if i want to build something like this i need to pay 100$ for all the materials ? Please login(right side) or Register to leave a comment.