If You enjoy building chassis more than designing body designs, this is one of the best building styles for you: Buying Lego sets and making them remote-controlled. I have modded almost every Lego set I got over the last couple of years and made some guidlines for the best possible outcome. PLEASE NOTE: This are the guidlines I like to use. Other people might have different and I totally respect theirs. That's the best part about Lego: Everyone can build how they want, and it should always stay like that. I just thought I'd share my guidlines, as they may inspire some to also mod official Lego sets.
✴Do not change the look.
Your only goal should be to make the model remote-controlled, not improving the appereance.
✴Always hide electric components.
This is the statement that bothers me thr most: "I'll simply put the motor outside the body because I can't find any space inside". That way you not only wreck the model's looks, but also fail at the challenge of fitting everything inside.
✴Make reasonable changes.
Before you mod a function, figure out if it will be convenient to operate. For example, it would not make sense to remote control a gearbox' motor, but having to switch the gears manually.
✴Do not add or remove any functions.
The final outcome should still feel like the original model, just remote-controlled.
If you follow this guidlines, your result should be a fun to play with, nice looking model. You succedeed, when the following conversation happens when showing your model to another Lego fan:
A: " Look what I built"
B: "Oh, nice, you got the xxx set'
A: "Yes, I even made it remote-controlled, "
B: "What?! How did you fit all that stuff in there? O_o"
If you now feel like modding a Lego set, I've prepared some tips and set recommendations for you:
✔Make a plan: Think about where to put what component before building anything. Also have a second plan, as it often turns out something wont work the way you thought. (I often make plans before even owning the set by looking at the instructions)
✔Lights are a nice, but simple addition. You sometimes have to change the way they are mounted, but it pays off.
✔If you run out of space, remove the fake engine, it doesn't hurt that much.
✔Wires need more space than you think, so keep some room for them. (Especially when using lot of Leds)
✔A common setup is the following: Steering & driving RC, lights & gearbox' motor attached to switches.
✔Mid-range sets are the easiest to mod because they have the most space unused.
✔Assemble the set yourself, because you get a better understanding of how things work and what you can remove.
I highly recommend the 42008 service truck and the 42006 excavator for modding, as they both have plenty of space left. I modded both of them, so feel free to ask me for help if you're stuck, I would be honored to help you out!
Personally, I really enjoy RC modding Lego sets, and I hope this post inspires some of you to try it out too. I would love to hear about your ways of doing it!
Greetings, Technirus