Comments by "Makan Tahi" (@makantahi3731) on "SmarterEveryDay" channel.

  1. train formation flight in video game , it is still difficult
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  2. problem solved: use more rigid main rotor with lower diameter and max rpm
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  3. never keep epoxy in big volume pot, because it produces heat when is curing, so you should cooled down it before mixing and keep it in fridge on low temperature to cure
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