Time to get started making my buggy! Tamiya makes it easier by dividing the build into sections with the parts in helpfully labelled bags. So, I begin by ripping open bag "A"....
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| This is the differential gear that goes into the motor casing. |
The bottom gear in this photo is the input gear, and in the middle is the idler gear.
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| All 3 gears combine to form the gearbox for the buggy. The differential gear at the bottom has 40 teeth and the top input gear also has 20 teeth. This gives a transmission ratio of 40/20=2. This means that the spur gear ... not attached yet ... will have to turn 2x for the wheels to make 1 revolution. (I didn't already know this, of course. I only found this out and started counting the teeth when I wanted to find the buggy's final drive ratio....more on that later!) |
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| Screwed the halves of the motor casing together and attached the universal joint to each end. |
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| The rear bumper. There's some debate over what "FS" stands for. Apparently it's for "Free Floating Progressive Damping System"...although someone has said it stood for "Freakin' Slow"! |
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| Wheel axle |
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| Some of the screws require this thread lock gel to keep them in place. The consistency kinda reminds me of those toys I played as a kid that had liquid ooze. Apparently, you're only supposed to use this gel for metal on metal contacts, NOT plastic. |
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| Rear engine case and wheel axles done. Looks sturdy...and feels heavy! |
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