Hi everyone, my name is Jim. I am planning to build an RC sub of my own design, completely from scratch. I've been reading a lot about the concept online and developed my plan a bit. I want to start with the Water Tight Compartment and have a few questions if you don't mind:
1. I've seen references to the WTC remaining sealed for lengthy periods. If it is sealed most of the time, where does the battery go? If inside the WTC, how is it charged without breaking the seal? If outside the WTC, how is it protected from water?
Or is the WTC meant to be opened and closed every time the battery needs to be recharged?
2. With the electric motor (I'm planning to use an old RC aircraft motor) inside the WTC, what kind of seal is commonly used around the drive shaft as it leaves the WTC? Bicycle bellows or the shaft through a rubber block with grease inside it? If a bellows, how does this mate to the spinning shaft?
3. I believe the MHz range radio/receivers are best for penetration of water by the signal but these have a long aerial on the receiver. How is the aerial usually arranged inside the sub - all bundled into the WTC or does it extend outside the WTC so it can be straight?
4. How do you water-proof the exit point from the WTC for the wires leading to the servos for the planes?
5. Plane servos - how are the servos, themselves, water-proofed?
Thanks guys for any help you can offer with these questions!
Jim
1. I've seen references to the WTC remaining sealed for lengthy periods. If it is sealed most of the time, where does the battery go? If inside the WTC, how is it charged without breaking the seal? If outside the WTC, how is it protected from water?
Or is the WTC meant to be opened and closed every time the battery needs to be recharged?
2. With the electric motor (I'm planning to use an old RC aircraft motor) inside the WTC, what kind of seal is commonly used around the drive shaft as it leaves the WTC? Bicycle bellows or the shaft through a rubber block with grease inside it? If a bellows, how does this mate to the spinning shaft?
3. I believe the MHz range radio/receivers are best for penetration of water by the signal but these have a long aerial on the receiver. How is the aerial usually arranged inside the sub - all bundled into the WTC or does it extend outside the WTC so it can be straight?
4. How do you water-proof the exit point from the WTC for the wires leading to the servos for the planes?
5. Plane servos - how are the servos, themselves, water-proofed?
Thanks guys for any help you can offer with these questions!
Jim
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