Question- Can they really go underwater?
Answer- Well, yes (that's why they're called "submarines" :)
) that is why subs hold an attraction to the people that sees them. With the ability to go underwater and pop-up somewhere
else undetected, you attract a large crowd wherever you run them!
Q- How do they do it? (Go underwater?)
A- Well, this question has popped up in so many places that we had
to answer it: Basically, there are two ways: Dynamic diving, diving with inclined diving planes and speed (see
RC Sub Modelling) and there's stactic diving, diving with ballast tanks and more realistic.
Q- Which is better? Dynamic or Static?
A- Your choice really, for a beginner, a dynamic submarine might seem
to be a good solution. Dynamic divers are cheaper and easier to build. With a static diver however, you have to
invest more money and time, with the addition of a ballast tank, they are generally speaking, more harder and complex to build.
Also you have to add an extra radio channel for static divers to work (ballast tanks,etc)
Q- What sort of radio should I use?
A- When you buy an RC Sub kit, radio equipment is usually not included. So
when you actually come to buy your radio, it is best to chose a surface frequency (27, 49 or 75 MHz) as aircraft frequencies
cannot be used to operate boats. With a dynamic diver you should use a 3 channel radio (Throttle, Rudder, Diving planes). With
a 4 Channel radio, you can add a ballast tank to make your sub stactic diving.
Q- Are they hard to build?
A- Well, if you put your time and mind to it, no. Most people
usually go with a commercially made kit. You always scratchbuild yours but it will at least take more/less time depending
on your modelling experiences.
Q- Is building an RC Sub cheap?
A- NO! One sentence should justify the meaning: "You cannot get
a fully operational RC Sub for less than a hundred dollars!" First, you have to get a hull, a kit will probably cost
over 100-400$ plus the additional RC equipment (that's another hundred) paint and supplies, will have to be added in the total
too. I won't say the price but you get the idea right? :)
Q- What sort of ballast should I use if I build a static diver?
A- To say what sort of ballast tank is better is like to say, what
type of sub should I build? So to answer that question (others might disagree with me here), it will really depend on
your area of interest really. Piston tanks are really easy to operate, Gas powered tanks
are more complicated to build and manuever, while Pump ballast tanks sometimes do not allow you to get full static diving
capabilities. depending on ballast tank size. I will have a section dedicated to ballast tanks later on.
Q- What colour should I paint my sub?
A- You can paint your sub the colour it should be, military and scale
submersibles often have their real colours found in references.
While fantasy subs' (the ones that you build with your own design) colours are usually imagined
by their creators, it is best to paint your sub a bright colour so that it can be seen easily underwater, yellow, orange,
etc. Or black/grey,etc, if you don't navigate in murky waters that is.