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How to Build a Motorized Go-Kart

Build a go-kart using readily available parts and a lawn mower engine. This is a very simple design built with junk yard scavenged parts mostly. Remember web uilt this as kids, the dimensions would alter somewhat for bigger riders.

Things You'll Need

  • 40 feet ¾" water pipe
  • Welder
  • 3x4 feet aluminum sheet
  • 4 feet ½ mild steel bar
  • 3 ½ feet ¾" hardened steel bar
  • 4x go Kart wheelsBraking assembly
  • Steering wheel
  • Lawn Mower engine
  • Lawn Mower Gas tank
  • 4x bushes or wheel bearings
  • Axle mounts/brackets
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Instructions

    • 1

      Get ¾ inch water pipe approx 40 feet long, Frame A. Cut into 2x6 feet and 2x3 feet pieces, join the corners with pipe elbow joints and weld in place.

    • 2

      Attach a 4 1/2' x 3' aluminum sheet to bottom side of Frame A.

    • 3

      Take a 3 feet pipe and join by elbow two 1 ½ feet pieces to the end and weld in place, Frame B. Then weld this frame 2 ½ feet from one end of frame A.

    • 4

      Get 4 feet of 1/2 inch mild steel bar and drill a 5/8" hole into the front pipe and attach the bar from the hole to the to Frame B and attach a steering wheel to the end.

    • 5

      Attach the front wheels via stubby axels pivoting on points allowing them to turn, thern weld an angle to the steering shaft and hook this to the stubby axles via a universal type joint, and attach front wheels and brake assemblies, either with hand or foot brake.

    • 6

      Use a ¾ " hardened steel bar for the rear drive axle and attach it below Frame A at the rear. You may use bushes or bearings, depending on how much you wish to spend, and attach rear wheels.

    • 7

      Weld or attach a large bicycle cog to the centre of the rear axle and ensure that there is sufficient clearance for the cog to spin freely to drive the axle.

    • 8

      Get two bucket seats from a junk yard and weld them in place behind the steering wheel in a comfortable place to sit.

    • 9

      Join 5 x 3 feet pieces of pipe by elbows Frame C, and weld 3 of them then attach by welding to Frame A directly behind the seats. Frame C will be braced to Frame B and backwards to Frame A using the remaining 2 pieces.

    • 10

      Use a lawn mower engine which has a small bicycle sprocket on the drive shaft and attach it to Frame A by welded and bolted supports so that it is aligned to the cog on the rear drive axle. Attach the throttle cable to a pedal for an accelerator.

    • 11

      Attach a gasoline tank to Frame C above the height of the engine and use tubing for the gasoline to flow to the carburetor.

    • 12

      Attach a bicycle chain between the engine and the rear axle in a similar way as you would do with a bicycle, and fill the gasoline tank.

    • 13

      Prime the engine and have someone push and start you and off you go in your Go-Kart.


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