Hello everyone! Welcome to Beaver’s Hobby channel. In this video I’m going to show you how to fix and install the aluminium suspension upgrade for WLtoys 1/28 scale car, K989 series. First thing first, you need a Dremel or a drill to fix this aluminium suspension kit. If you don’t have the tools, you’d better to skip this upgrade. The benefit of this upgrade is the adjustable camber. But it will make the car heavier as well. Now, let’s take a look at the problems and how to fix them. Starting with the included screws, the long screws for lower arms are too short. But it doesn’t matter because there is a major design flaw in the lower arms and you can’t use them anyway so you won’t have to use the screws. All the arms are all the same and the ball head is put in from one side. When you use it upside down in front right and rear left, the ball will slip out of the socket. Sometimes it’ll pop right off the arm. The other times it will jam up the suspension. This makes the car undrivable and there’s no way to fix it. If you somehow got working lower arms, they will still lower the ride height and widen the track width. Because they are longer than the original arms. As the result all the toe angle will change. You will also have screw heads sticking out at the bottom. All In all, it’s better to use the original lower arms. Next, the upper arms are too long. This makes the top of the wheels leaning out creating positive camber. To fix this you’ll have to use the rod from M2 screw instead of included turn buckle. To do this, measure and cut a M2 screw, 6 or 7 mm is enough. Then round the sharp edge off using sand paper or file. If you have a power tool like Dremel, now is the time to use it. Or if you don’t want to do this, you can also use M2 grub screws instead. 5mm will do nicely. Next, in order to use the original lower arms, you have to fix the ball heads by grinding out the pole under the head to have full suspension travel. Also shorten the screw length as well so it won’t interfere with swing shaft. You only need 4 of this for the lower arms. The full detail of this fix is in my previous video. Now that’s everything is ready, let’s put it on the car. The car I’ll be using is my old car that I previously modded in to RWD drift car. Then I disassembled it because it was broken beyond fixing. Now I’m going to rebuild it to 4WD CS drift car. Let’s do the upper arms first. Take the headless M2 screw, apply thread lock, and put it in one side of the arm. Then close it with other side. And wait for it to dry. If you don’t apply thread lock it is going to wobble like this. And here’s the arm with thread lock. Now put the upper arms in using original screws. On to the knuckles, put the ball head that you took out to fix back into the bottom. Then remove the ball head from the top. Remove the bearings from an original knuckle and put them in a new one. There are 2 bearings on each knuckle, one from the outside and one from the inside. If the slot for bearing is too tight, grind it down to make it wider. Next, mount the wheel and check if it can spin freely. And put it on the car. Take the short screw, put it through the ball sockets on the arm, and screw it down to the knuckle. Finally put the shock towers on. They are the only parts that you don’t have to fix anything. And that’s it. Now check if the suspension is working correctly and it can move up and down without getting stuck. Also try to check the camber if it is equal between left and right. One way to do this is by driving the car and check dust pattern that sticks on the tyres. Then adjust the camber accordingly. You might find that changing camber can affect the toe angle as well. You can fix this by making an adjustable tie rod. Use 3.5mm ball links with turn buckle to make an adjustable linkage. You can find these parts in a small helicopter. The parts I use are from Align Trex 250. You can also change the ball heads to the other size that you can easily find as long as they use M2 screw. For example, 4mm ball heads. I’ll also upgrade the transmitter as well just because I can. And I tell you, this Flysky Noble is fantastic! And now the car is complete. And here’s a little bit of test drive. That’s it for this video. Please subscribe if you want to see more content like this and press the bell icon to get notification whenever I upload a new video. You can follow me on Facebook to see what I’m doing between videos along with some quick updates. Thanks for watching. And see you again next time.