JohnPhilley wrote:I've got my Nautilus to the point where it's time to start adding the RC components, but I don't know how to choose them.
I'll assume that you've had a chance to read through the SubSchool pages found on the main SC web page...and we'll go from there.
JohnPhilley wrote:Does selecting the battery determine or narrow down your choices of what servos and motors etc. you can choose from?
The primary decision criteria for selecting a battery voltage is the main drive motor for the sub. If your motor is a 6-volt motor, then a 6-volt battery works. Using a 12-volt battery may damage the motor. If it's a 12-volt motor, then you'd want 12-volts (or something really close to it like a 11.2-volt LiPo).
The other battery criteria is Amp-Hours, which determines how long you can run your sub before the battery goes 'flat.' This is based on how much current your sub draws when running...with the motor being the primary source of battery consumption.
I should note that the choice of ballast system may have an impact on choice of battery size as well.
The radio components (receiver and servos) can be selected independently.
My recommendation is to choose the various components to be used to run the sub, select a battery that supports the power requirements and then run your list of sub parts by one of us. We'll be very glad to help.
JohnPhilley wrote:I know I can walk into a store and buy an 8 channel radio. But then what? The radio is supposed to come with a matching receiver, right? If so, do the components (motor, servos, etc) just plug into that?
Just make sure that you are selecting a radio that works with submarines. In other words...a 2.4GHz will not
work. Here in the U.S. we are required to use r/c radios on the 75MHz set of channels. At that point servoes will be plug-n-play. For motors, you'll need to get one or more electronic speed controllers (ECS), which is what will plug into the receiver. The ESC then connects to the motor.
JohnPhilley wrote:How much electrical engineering is involved at this point or is it more plug and play?
This is pretty much plug-n-play.
-does this help?