Building and Testing a Legopowered Submarine

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=tGEZApd9MMk

Making a radio-controlled submarine with Lego and other materials. • At the end I test it in a lake. Enjoy! • The submarine specs: • Length: 22 cm (8.7 in) • Displacement: 1880 grams (66 oz) • Speed: 0.2 knots (10 cm/s) • Operating depth: 3 m (10 ft) - ballast tank will fail after that • Hull: 1.5 liter lemonade pitcher (Orthex) • Forward: Lego m-motor runs two 9-length propellers (2952) • Turn: Lego m-motor runs a geared-up (0.67:1) small 3-blade propeller (6041) • Ballast tank: Lego m-motor runs a Lego linear actuator connected to a 60 ml syringe (Eotia marinade injector). Active range 20 ml • Radio control: 27 MHz controller dissembled from a toy submarine (Zantec Mini RC U Boot). L298 H-bridge to drive motors • Power supply: 9V Lego battery box for the motors, 3.7V battery for the radio controller • The yellow toy submarine at 6:00 is this one: https://www.amazon.de/Zantec-Schiff-F...

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