To beat the heat this summer, we decided to do something fun, creative and slightly extreme. Jumping the bike into our neighborhood pond seemed like a good candidate. In order to pull off this activity, we needed some sort of ramp to suit different riders, including those who want a higher jump, but also those who care for a lower ramp. Most ramps cannot do this, and are too small anyways. To solve this problem, we set out to design and build our own, adjustable ramp.
Step 1: Supplies and Materials
For the ramp, we used standard lumber sizes (2x4's and 2x2's). We also used a large, sheet of plywood that was about an inch thick, give or take a few 64th's. The hardware that we used consists of 2-1/2" screws, 1-1/4" screws, a dozen miscellaneous screws, and two 3" clevis pins. We also used two sets of two hinges. The size of these doesn't really matter, as long as they aren't super flimsy. The miscellaneous screws that we mentioned are used to attach the hinges to the large plywood, so make sure they are short enough so they don't poke out on one side of the sheet.
- 1.25" screws
- 2.5" screws
- Misc. fasteners (under one inch)
- 3" clevis pins
- 4 heavy-duty door hinges
- 2x2's supporting main sheet of plywood: 78" (x2)
- Large sheet of plywood: 74" x 26" x ≈1"
- Long, base 2x4's: 8' (x2)
- Base end stop 2x4: 26"
- Support brace 2x4: 26"
- Support leg 2x4's: 27" (x2)
- Cross beams on base 2x4's: 19" (2x)
- Stops for height settings: 3.5" x 3.5" (6x)
- Small plywood sheet (for threshold): 29" x 14" x 1/2"
- Threshold 2x2's: 15" (x2)
- Threshold support 2x2: 20"
- Drill bits
- Chop saw or hand saw
- Rotary tool (dremel)