Mould King 10087 L4 Engine Building Kit - Build Your Own L4 Engine Toy, 4-Cylinder Combustion Petrol Car Engine Replica STEM Mechanic Engineering Model Construction for Teens 14+ Years (1787 Pcs)

I got this kit for my grandson who loves Legos and anything mechanical. Putting this together was a fun challenge and a great introduction to an engines functionality. The only reason for a 4 rating vs a 5 was due to the quality of the directions. The pictorial directions did not give clear step by step visuals so several times during the assembly he had to go back and rebuild a section after carefully studying the drawing. It was still a good fun and challenging project .

This was by far my favorite build so far! It builds well and holds its form. I found it thrilling everytime I completed a section and connected it to another. You can really see the motor come together. I will definitely purchase another build from Mould King. The directions weren't always helpful but I was able to figure it out on my own. I was missing one piece but it didn't stop me from continuing on. I honestly couldn't remember what piece was missing in the end so it must not have been to important. If you're thinking about purchasing one, I highly reccomend it.

There are a lot of parts and I made some mistakes along the way, but I am thoroughly enjoying this project. There haven't been any missing parts so far, so I feel pretty confident that I'll finish without incident. I just started step 4. There are very few written instructions and some of the drawings of the connecting pins in the instructions aren't quite as clear as I would have preferred. I'm having a blast though :)

Would recommend that you glue some pieces together because when it torques it comes apart and one part didn't fit well so had to skip it. But it works good and runs

This is the second or third motor I have attempted to build from mould king. In every instance, the gages that are supposed to circulate (but remain upright) never remain straight up, but instead collapse which causes the turnstiles to jam when the battery is operated. Problem? Yes, because the entire build cannot work without this. So it’s both a quick reminder that I’ve wasted both time and money on a mould king product. Thankfully this was one of the cheaper options, but still painfully frustrating. It happened after the first bag too.

Instructivo perfecto, motor funcional, de muy buena calidad los materiales

My kid likes it

This is not a Lego Technic set; yet, Lego parts will work just fine. Here are the main differences: - Differ formula of plastic. MouldKing has more of a waxy feel and the plastic feels softer overall compared to Lego - Clunky patent workarounds. MouldKing wants to use certain pieces that Lego still owns a patent, so they "invented" comparable pieces. This means that you have to assemble these parts to result in a piece exactly like ones that Lego still owns a patent. These extra steps seem to slightly weaken the overall assembly, and can be frustrating due to the small size of these parts and they get stuck inside other pieces The instructions are good, but not great. If you are accustomed to the almost aggressive handholding that Lego uses in their manuals, this will have a learning curve. The mechanics and the gear systems are very stable, but it is not recommended to run it at full speed for longer than short bursts. There is a higher than usual number of interconnected gears and chains that connect together, so a small hiccup at a low speed, results in something locking up at high speed. The size of final build is about a 1:2 scale, so you need some shelf space to fit it. The motors work on six rechargeable AA batteries, which is a plus because there is no AC adapter. This kit is really only for kids ages ten or older, unless they are really skilled builders. This is not a kit for beginners or casual builders

Dit is niet ernstig. Zogezegd 535 bouwstenen in zes zakjes verpakt, zonder inventaris van hoeveel er van elke soort zouden moeten zijn. Het plan volgen lukt behoorlijk maar voor iedere "bouwsteen" is het zoeken over soms meerdere zakjes. De individuele bouwstenen hebben immers geen code. En plots blijken herhaaldelijk bouwstenen te ontbreken en wel op zo'n manier dat het geheel niet afgewerkt kan worden. Dat herhaaldelijk ontbreken van de stukken is het ergste. Halfweg (?) had ik al minstens vier keer bouwstenen te kort.

Rende davvero l' idea a grandi linee di come funziona un motore 4 cilindri

Imitation de Lego technique plutôt bien faite. Le tout s'assemble bien et le moteur fonctionne. Piles non incluses. Aucune pièce manquantes, j'en avais d'ailleurs quelques unes en plus (maillon de chaîne)

I am a real Lego fan and have built a Haynes V8 engine previously. Having read some of the reviews I wasn't sure whether to buy this. I am so glad I did! I was impressed that the seller sent a message to check all was well. It uses traditional Lego type parts although there were a few I hadn't seen before (parts that clicked in together) The quality is superb and the unit is compact. Great educational fun at a great price. I wasn't sure if it would work but it did beautifully!

Difficult, but not impossible, to build. There was one spring too few, but two per cam is actually too many. The camshaft is too light, causing it to bend slightly; some extra support midway through would have been better. All in all, a beautiful machine!