Lego Ninjago – Cole’s Earth Driller (70502) Review


Lego Ninjago – Cole’s Earth Driller (70502): So my first Ninjago series done ahead of the apparent movie to come in 2017 (which I likely will not be watching, but the Batman movie with Will Arnett is quite likely). Most of the sets are a hit or miss appeal to me, and I hope I can one day review the dragon they have. Overall though looking at this set I do wonder why Ninja’s would have a massive drilling machine. Note: This a miscolored piece, missing axle, and the minifigs were also messed up – kind of a bad show from Pley.


Time to Knoll: 9.5 Minutes


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Time to Build: 16.5 Minutes


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  • Pieces: 171 and 53 Steps – Manual (54 Pages)
  • Price: Retired on Lego and $28.99 on Amazon
  • Weight 220 grams
  • Combo Points: (5X10X1X1) = 50 points
  • Volume (Based on Blob length/width/height): 32mm x 80mm x 96.0mm or 245.76 cm³ with a bit more making it 265.08 cm³




  • Uniqueness: 4 out of 5 Stars
  • Aesthetics: 3 out of 5 Stars
  • Fun to Build: 2 out of 5 Stars
  • Hoarding: 3 out of 5 Stars




What Else?

One of the main components of a Ninja is a complete mastery of stealth. Now as someone who has Lego I can confirm that running around in the darkness with Lego on the ground that I missed is likely to result into a lot of pain, and for me at least screaming. As for why the American Chemical Society Reactions series explains:

Now the exact reason is because with the large amount of sensors in your foot ~200k, with the fact they are A-Delta fibers sensors meaning they get fast and piercing pain. You then add the fact that Lego with it’s long-term focus on strength and resistance to crushing and despite the ~3 million pascals of pressure the Lego will refuse to budge.

However let’s give the benefit of the doubt here to the Ninja – they likely have a high threshold for pain. So I decided to do my own testing and see what the noise difference is between stepping on a Lego (my voice being muffled) which has led to the following. (Recorded nearby at floor level)

  • Ambient of house: 40dB
  • Stepping on carpet floor: 41dB
  • Stepping on single 2×4 brick – 45dB
  • Stepping on a small collection of assorted Legos – 62dB

It’s not much, but it’s the difference between a quiet library, and normal conversation, so as far a ninja is concerned they better watch out for Lego pieces in a group or face the wrath of a librarian.


Remix: So with that big nose cone and 3 big ‘gear wheels’ I instantly saw a rocket like coming here. I tried to utilize that and have side thrusters that could fall off, and a main shuttle (hint for a future review btw); however I’m not totally pleased with it, there’s needs to be a bit more color differentiation and the pieces are a little off from what could make the idea really work.



Final Thoughts: Overall I love the spinning drill mechanic despite how simple it is (although without the correct axle it’s finicky). As far as Ninjago goes this is actually a pretty decent showing so far (really want that dragon set) This review came in a little under the wire, and I want to make note of what I gave up (2 nights without playing No Man’s Sky!), but I’ve got an interesting thing for next week – hopefully with some 3d printing.

Final Score: 3 out of 5 Stars

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