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they use aluminum cause its easier to cut, way easier than steel, easier to weld, light, and strong enough to do the job. Personally I use a 3D printed mount with a 6mm bolt that goes through it and the truck. Its stong (not as strong as aluminum or steel of course) and it does the job. 1/16" steel might bend, I'd go with 1/8th inch to be safe.
20c, since usually these current ratings are inflated, (20C is usually like 15C)
Yeah check the listing for the ESC, it should say max voltage supported. to get 1850 W you'd need that 30.8V battery (assuming your esc supports that) at 60A. Also, I'm pretty sure brushless motors don't have a "max" current, they have a max efficiency current so that probably what thats saying. So I'm pretty sure you can go above 60A, it just wont be as efficient. If you're gonna need all of that 1850W with a 6S (22.2V), you'd need 83.33A, so I'd suggest a 100A ESC. The hobbyking 120A xcar ESC is pretty cheap, look into that. A current thats too big will damage your ESC, not at first because your ESC has Temperature auto shut off and some other safety features, but a current thats too high will burn up your ESC after a few uses. A VESC is an ESC specifically designed for the electric longboard, There's a lot of hype around it which I don't really get (being the frugal minded guy I am), but it has some cool configureability options and has a smoother startup than a car esc. It connects to your PC and you can see current draw graphs and stuff, but if you're just gonna put it on and forget about it, not sure if its worth it. It has this cult following and people swear by it.
Also, you meant the two batteries in parallel right? Series doubles the voltage.
For a GoolRC that's pretty dang expensive, eBay was way cheaper
I didn't suggest a battery to you. Of those two ESCs I wouldn't get either if you're trying to save money. Look at the 120A X-Car Beast.
Second year Engineering student here- both those motors are too high kv for a single motor setup. The 2200 kv one is really reaching out there too. Look for higher Watt output rather than a high kv. I promise you if you try to use either of these motors you will not get anywhere near 40 mph, one because the motor wont have the torque, and two, the 80A Esc will burn out in a few seconds
Ive seen this motor on ebay, it works with lower voltage batteries too, the people who make those listings dont speak english very well, they say 9S-10S to get the Wattage they list there, lower voltage batteries will get less Watts, but still do the job fine,
I use Lipos too, but 18650 cells would be ideal, they last much longer than lipos. 1500 cycles compared to 500 cycles. Theres a reason Boosted board uses them.
At 10S you'd pull a max of 60A, if youre using something under a 10S battery you're gonna draw more than 60A just don't want you to waste your money for a ESC that'll burn out, look around google for stuff about this.
Arduino Question: would you mind explaining the 3 wires that go to the battery? One is ground, and 2 go to slots in the balance port of the battery?
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