Difference between revisions of "Makership Kart Build"
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− | 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. | + | the goal of this project is to build a gas powered go-kart that can compete in the [http://kyscca.com/ 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 | + | |
− | + | = Day 1 Saturday July 9= | |
− | + | began welding frame using a tubeular [http://www.blocklayer.com/pipe-notchingeng.aspx template generator] to notch out the metal. Basic rectangular frame finished. | |
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+ | |||
+ | = Day 2 Sunday July 10= | ||
+ | Went to a [http://isapickpullsave.com/part-list/ junkyard] and salvaged the steering system out of a lawn tractor. Also went to Harbor freight and bought 2 [http://www.harborfreight.com/heavy-duty-10-inch-groove-tread-tire-40729.html 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). | ||
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+ | |||
+ | = 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. |
Latest revision as of 15:41, 14 July 2016
Contents
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.