Well, after my first and mostly successful wooden gokart, I decided to build a sturdier and better one. I used the same wheels, engine, axles, and seat from the first one. For specific details on mounting the engine, sprocket, and wheels, visit my first gokart. This is definitely an improvement from the first. For your convenience, I made a 3D Sketchup model. Download it here. The following steps contain pictures from Sketchup. I recommend you use Sketchup to find the exact dimensions.
Step 1: Step One
Put two 3 1/2" x 1 1/2" x 75" beams 3 1/2" apart.
Step 2: Step Two
Place a 22" long beam underneath. Do not attach. Next, place a 3 1/2"x3 1/2" in between the long beams. Place a 1/2" thick beam and attach it to the longest two beams. Then, drill down the middle of the 1/2" thick beam through all three layers. Put a bolt Into the and tighten. The bottom beam should pivot.
Step 3: Step Three
Attach two 15" long beams
Step 4: Step Four
Attach a 10 1/2" long beam to tilt the seat bottom. Install the seat bottom.
Step 5: Step Five
Attach the seat back and install a brace. Place the engine on the mount.
Step 6: Step Six
Attach a beam underneath the engine, and install blocks underneath that on either side. Drill holes through either side for the axle. Insert axle and and attach sprocket to axle or wheel then install wheels.
Step 7: Step Seven
Do the same for the front. Add blocks, axle, and wheels.
Step 8: Step Eight
Add a steering lever and throttle. The throttle lever is connected directly to the engine's throttle.
Step 9: Finished
Hopefully, I have given you a complete tutorial on how to build your own gokart. Some things on the Sketchup version may be slightly different from the real gokart, but the dimensions are accurate.