Again, if your heli is one of those off the shelf $20 types its system is set up like this: Two motors provide the lift through counter rotating rotors (propellers that spin opposite directions). This means (I am guessing here) that your signal will be significantly weakened in the water especially as visibility in the water goes down.
Things to consider as you build your heli turned sub: - If the helicopter to be repurposed is one of those $20 to $50 fly indoors mini helicopters then it is probably controlled by IR (Infrared) signals. I have never used a helicopter but I have thought I about it. That is an interesting idea! The short answer is yes, theoretically. Here is a video of the finished product at play: Unless you have a fishing line attached when this happens you could loose your sub. It could also loose its buoyancy due to a change in volume causing it to sink out of the range of your remote. If your bottle crushes you run the risk of it leaking and damaging circuitry. The deeper the dive the more the pressure. **The plastic bottle must be sturdy because of the pressure that will be on it when diving deep. You can can also buy fancy expensive propellers at any hobby shop. See step 6 for a picture of these lego boat/sub propellers. *The best are the ones meant for lego boats or subs, though, some lego airplane propellers work. You should know that your RC car will most likely be unrepairable after these changes.
#Remote control submarine full
Start by collecting the following items: Tools - hot glue gun and multiple glue sticks - a hobby knife (aka exacto knife) Materials - one working electric remote control car - two lego propellers* - enough batteries for remote and car - a sturdy** plastic bottle big enough to fit circuit board and batteris but not bigger - the bottle's cap - two or three corks - electric tape - duct tape - a hand full of nails - two or three feet of wire (I used wire from an old lamp but a smaller gauge (diameter) wire would probably work fine) - WD-40 and/or automotive grease - a plastic easter egg (optional) Once you have collected your supplies you move on to step 1 and begin to take apart your RC car to 'harvest' the parts needed for your sub.
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