Makership Kart Build

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Plan

the goal of this project is to build a gas powered go-kart that can compete in the KYSCCA autocross events at the L-Ville convention center.


Day 0 Friday July 8

Arrived at space with makership approved, plan to start fabricating frame for kart. Cut side frame rails: 4'2" long 1.5" diameter steel tubing. Found 2.5" tube for the back rail and a 1.575" tube for the front rail. Got sidetracked building battleship frame


Day 1 Saturday July 9

began welding frame using a tubeular template generator to notch out the metal. Basic rectangular frame finished.


Day 2 Sunday July 10

Went to a junkyard and salvaged the steering system out of a lawn tractor. Also went to Harbor freight and bought 2 10" wheels with 5/8" ball bearings


Day 3 Monday July 11

Removed 5/8" ball bearings from wheels to make room for either 3/4" bearings or solid hub for power transmission. Made wheels for battleship game


Day 4 Tuesday July 12

Assembled test rear axle and discovered that my rear sprocket may be too large. Ran gear and wheel diameters through a calculator and discovered that my top speed would only be 22mph as currently configured (5 tooth clutch sprocket, 47 tooth drive sprocket, 10" drive wheel).


Day 5 wednesday July 13

Bought full length rear axle, crunched the numbers to determine that my gear ratio corresponds to a acceleration equal to a 0-60 time of 15s (assuming 9.2 ft. lbs of torque and 300 lbs of kart+driver). My mediocre ford focus has a 0-60 time of 7.5s so the acceleration isn't great either. May need a more powerful motor. Plan on coming to the space to use scroll saw to make a chain guide and rough out the pillow blocks for the rear axle bearings. Ended up not getting mechanical work done, only laid out frame and steering system to get a sense of size. Looks like it will fit in my car but only just. also bought 2 wheels for the front.


Day 6 wednesday July 14

Removed stock bearings from new wheels to accommodate 3/4" ones that will come in monday. Plan on coming to the space to use scroll saw and to work on the battleship project.