Mould King 13112 RC Excavator Building Set, 1830 Pieces Building Blocks APP Remote Control Truck Construction Vehicles Model with Motor, STEM Engineering Toys for Adult

Just finished this build today. I made e modifications that I think turn this into an excellent RC excavator. First I swapped out the dual battery boxes for a single 6 channel battery and remote with proportional controls. Mould King sells it for $40 her on Amazon. It's a tight fit. But will fit into the rear battery box spot unmodified. Just adjust the position of the technic beam on top of the xl motor forward one stud. 2. The mounting brack that attached the rear of the lift cylinder that controls the sticks in and out movement. ( Located on top of the boom) Needed to be raised up by one stud, ( or hole) to make the mechanisn work smoothly and not bond up. 3. The bucket it comes with is way too wide for a real excavator. So I 3d printed my own bucket that looks much more realistic. Basically the same exact shap but half the width. Every piece was there and it's a fun build. Definitely challenging. Pay close attention to details and go slow. Keep an eye on some pieces that look almost identical to each other but have slots in them to mate up to other parts. If you use the wrong ones, you'll regret it later, and be tearing pieces apart to swap them. Trust me! All in all great build. Just needed a few tweaks to make it perfect. Fully 100% compatible with Lego and Lego technic. Even the motors are Lego power functions basically.

If you just want to build a unique and well engineered mechanical model for the joy of doing it, then this is GREAT value. If all of your problems are first-world, you have $500 to burn, AND you demand the absolute finest quality control in every respect, then buy yourself some lego and what are you doing even looking at this? Anyway, I was consistently impressed with the fit, design, and features throughout. The instructions are FINE. There was no point where the quality of instructions was nearly as low as the price. I expected absolute trash based on the price! But this set was clearly produced with much more care than chinas typical level of effort when producing knock-off type products. The parts fit together in a consistent and surprisingly precise way( not as good as lego but way better than COBI). They consistently exceeded my (minimal) expectations with sufficiently detailed instructions, and mechanisms which were engineered with a clear priority for high functionality and aesthetic over cheap simplicity.

This is a great build! Drives great, operates great! Only downsides: 1) you have to turn the remote off/on if you want to switch from driving to using the bucket. 2) the drive control is reversed on each side so to go forward one side is the top button the other is the bottom button. Tried to fix that but failed. 3) the bucket is WAY, WAY to big. You can't pick up anything because the weight is too much for the gears. I tried picking up a half bucket of dog food (it was there. Lol) and the gears just clicked or stopped all together. I have also never seen an excavator with a bucket that size (proportion wise) in my life. it looks like they used the bucket from a loader for this model because they didn't feel like making one specifically for the excavators. If they put the right size bucket with this it would be PERFECT. Maybe I'll make one out of ABS sheet for it. Lol

Pros: Has all 6 functions of a real excavator (all independent of one another): left track (forward/reverse), right track (forward/reverse), swing (rotate left/right), boom (up/down), stick (in/out), and bucket (curl/uncurl). Can swing infinitely in either direction. Fun build with impressive mechanical drive designs. No pieces missing. Cons: The controller is awkward because 1) it lacks analog inputs / each command is either at 0 or 100% and 2) the controller needs to toggle between modes to select between track functions vs. digging functions; you can buy "Mould King M0019 6.0 Powered Module Kit" to separately upgrade to 4 analog + 2 digital functions (too big to be a perfect drop-in replacement). The boom/stick joint is not sturdy. Observations: This is an advanced build; interpretting the manual requires skill and possibly some judgement. Some parts fit tight and require strong adult hands. Both ends of the boom rams attach to rigid carbon fiber shafts. Boom rams can be manually adjusted to match in length. My tracks have remained on without issue (was careful to count track links; spare link was included in package). Front left cab pillar is made from rubber tube that needs to be cut to length. When a ram jams, remove both ends from excavator, manually turn gear to unjam ram, and reinstall. For the $130 price, I'd make this purchase again.

Working on it now almost finished, complicated build but worth it

I liked the completed project, AND it took some time to complete. However, a few problems were, the (new) battery boxes do not connect with the hand controller in tandem, the instructions were ambiguous, there were parts missing, and there was no link or app name to which I would be able to use my cell phone to act as a controller. I was pleased that after notifying the seller about the first set of battery boxes not charging, they promptly responded and sent me the complete power ensemble (2 battery boxes, 5 motors, 1 remote control, and extra cables.)

I have been building Lego Technic for years, hence this has been my bench mark, comparing Lego to Mould King there is no difference, the material and parts used are both of high quality. The build manual is easy to understand and very straight forward. The difference is only in the price. I have gone ahead and bought two more large Kits from Mould King. Highly recommended.

Aucune pièce manquante. Le contrôleur manuel fonctionne conformément. Bien que le plan aurait pu être plus clair, il est simple. Avec de la patience et de l'effort, le résultat final est impressionnant. Je suis très satisfait de la qualité ! Le rapport qualité prix est excellent. Je recommande vivement ce produit.

Honestly this was a decent challenge, but more from the difficult instructions than actually assembling. I'm impressed with the level of detail and the overall function. If you ask me, these sets give Lego a serious level of competition. I know people have mentioned missing pieces, but I had zero missing (actually plenty of spare parts used to join parts together). Most times when you thought something was missing, it turned out I misunderstood the instructions and used the wrong part somewhere else lol. Overall very fun to build!

It was almost a perfect set in comparison to big name brands. However, a number of peices were missing, some specialised peices we couldn't substitute with what we had on hand. That was a huge disappointment.

If you want to exercise your mechanical abilities this project is for you, never thought I’d be taking over a kids toy but it proved to be too much and grandpa had to take over, great on keeping the mind active!!

So this was my first Mould King product. All in all it went together well. Took along time to construct. Watch the instructions carefully. Sometimes they are numbered up/down, sometime crosswise. Biggest complaint is there are two controllers, six motors and one remote. The remote will only operate one controller at a time so you can either drive it or operate the arm. Not both. To switch you have to manually turn off one controller, turn of the remote, turn the other controller on, then turn the remote on. This is not very functional. A six channel controller/remote will be much more useful. Also the app does not work for this model. Mould King could do better with the functionality.