MOC S Drive Motor Speed Motor 4Pcs – Supports Forward/Reverse, Slow Speed, Slow Torque, Building Blocks Power Functions Compatible with Lego

Handy little motors for classic brick builds
This is a nice set of tiny motors that look like a classic 2×4 brick, only about 1.5 times taller. They fit well with name-brand classic bricks and are great for adding motion to small, detailed builds. Because they’re slower and less powerful than typical Technic motors, they’re better suited for creations like small cars, robots, or simple moving displays made from traditional bricks rather than Technic-style models. The motors connect securely and are fully compatible with major-brand bricks.These are compact and versatile, making them easy to fit even into small designs. To use them, you’ll need a Power Functions-compatible battery box. If you’re using them with classic bricks, I recommend pairing them with a AAA battery box since it’s smaller and better suited for non-Technic builds. However, if you don’t already own a battery box, keep in mind this set doesn’t include one, which could be a hassle.✔ Pros: Fully compatible with name-brand classic bricks Compact size fits into small builds Great for precision movements✘ Cons: Requires a separate battery box (not included) Slower and less powerful than Technic motorsThis review takes a look at the MOC S Drive Motor Speed Motor 4Pcs made by Domoni.

I build large Brick displays for BrickCon type shows. My displays use lots of motors in both continuous and intermittent operation. I am always looking for small motors that can drive these displays.These motors are the equivalent of five plates thick and are the same as a 2 x 4 brick in footprint. Other people in the reviews have said they are 2 x 4 bricks, but they are two plates thicker than that. At least the ones I got were.I did two tests on these motors. The first test is a very light to no load test. The only load is an axle and large gear. All four are run at once. In the second test, I used one of my demo platforms which is driving a a gear as a cam and a rubber band to pull back the platform. So in this test the load is the large cam and the rubber band.In the first test. After about five minutes the motor on the upper right starts to slow down. At first this gave the appearance of an increasing load. Then it started getting more and more inconsistent, like it was having a hard time getting over a spot on the rotation. Eventually it quit running. The motor was a little warm. The other three kept running at full speed, at least it appeared to be. I did not measure the rate of rotation, only what my eye could see. I stopped the test at 10 minutes, so I don’t know if another motor would have stopped beyond that time point.I only tested one motor on the demo display, the same motor that failed before. Again this started out fine, but after about four minutes it started to slow down. Then it became obvious that it was having difficulty pulling against the rubber band. A few minutes later it stopped. Again the motor was warm, a little warmer than the no load test.In all test cases, after a few minutes of being off, they started working again. The longer the off time, the longer the run time before it stops again. My guess is that there is a PTC type resetable fuse inside. As the motor heats up the fuse increases in resistance, thus slowing the motor down until the voltage drop across the fuse is so great that the motor ceases to work.One test I did not do was to try and control the motor speed with a PWM signal. Since the observed performance was not that good, I decided not to try.My conclusion is that these might be good for limited light duty that is not continuous. Especially in small places. They have limited use in any thing else, especially anything that is continuous and loaded. I may use them in some small, lightly loaded, lightly used module, where space is a premium.Unfortunately the star rating is not contingent on use/implementation. So the three is a compromise for now. Should be 2.5, but am giving them the benefit of the doubt.UPDATE: I used one of these motors in one of my displays. Space was at a premium. The motor opens and closes two opposing sliding doors. In the brick world these doors are 8 x 16 studs. See the attached video. This video was made at a show I just attended. During the weekend, the doors would open/close several times every 20-30 minutes. The motor worked every time. I would call the load on the motor, medium as it is sliding the two doors across the floor. Gear reduction is achieved through a worm drive gear.This implementation verifies my previous comments. Where space is important and the motor does intermittent work, these motors will get the job done. What cycle time you can achieve, ie how often you can run them, will have to be tested. Every motor will be slightly different and motor load will also play a part.Happy Building!

As far as I’m aware, there is no name-brand LEGO equivalent to these motors. They use power functions connectors. Speed is quite a lot slower than standard M motors, torque only a little less – very impressive for the small size. I also love that they’re 2×4 brick sized, they integrate much better with traditional brick-built designs than other PF motors do (those require more technic design elements), and also fit in better with smaller overall builds.I wouldn’t use them to drive wheels such as for a car because of the limited power. They’re better for moving mechanical elements.

【感想】精巧な作りで本物のレゴと遜色がなさそう。ただ説明書がないので、初心者には使い方が分かりづらいです。【使える場面】・レゴパーツを大量に使いたい時【良いところ】・精巧に作られている・安価に購入できる【気になるところ】・説明書がなく使い方が分からない・品質の保証がない【星数の説明】５つ：全ての人にオススメ４つ：魅力ある優秀な商品３つ：使う場面が想定できる人には可２つ：課題が気にならなければ可１つ：粗悪品のため不可