After returning to the apartment, the days were very peaceful, and Xu Shuidong did not bother with a group of people riding bicycles and carrying box guns to find a field.So the attitude of the people in the apartment towards Ding Chen has improved again.However, Ding Chen was still a little disappointed.The revolvers used by Xu Shuidong's bodyguards can clearly show traces of handicraft, but the design is very exquisite, and it can be seen that it is the handiwork of a famous artist.Of course, it may also be that Xu Shuidong got the design drawings that were handed down from the past.So Ding Chen still wanted to find an opportunity to ask, now that Xu Shuidong is not here, it is not good for him to take the initiative to run over and play on the field.How can I say that he is also Ye Dai's senior brother, although he didn't plan to cross the sword from the palace, he still hopes that Xu Shuidong can find his "holy aunt".There's no way, who made Ding Chen so kind-hearted.But soon Ding Chen didn't have time to think about it so much, because after returning to the apartment, Ye Dai took the initiative to find him and asked him to help him design and manufacture the new waterwheel.For Ding Chen, since Ye Dai has adopted the design principles he proposed, it should be a very easy thing to improve by herself.But in fact this is not the case.He was finally able to understand Ye Dai's father's hardships back then.In most cases, industrial design capabilities are clearly constrained by manufacturing capabilities, especially when there is neither talent nor materials.So even though Ding Chen has tried to simplify his design scheme, there are still many problems to solve.Ye Dai once reminded Ding Chen that there was a shortage of labor in the apartment.This problem has been alleviated to a considerable extent after Ding Chen proposed the miniaturization of waterwheels, after all, the difference between building a waterwheel with a radius of five meters and building a waterwheel with a radius of one meter is simply a geometric progression.Ding Chen soon found that the problems he needed to face were even more troublesome, and there was a lack of skilled workers in the apartment.There were peasants, hunters, and warriors, but there was a lack of workers.From design to manufacturing, this project needs to be solved by Ding Chen and Ye Dai themselves.Of course, the apartment is short of material resources, whether it is furniture or farm tools, you need to make and repair them yourself, so everyone's hands-on ability is not bad, and what is lacking is only manufacturing experience.In fact, most of the simple components, as long as Ding Chen can make Li Xiang and others figure out what they look like, he can make them all the same.What Ding Chen really needs to make by himself is only those parts with complex structures or high processing accuracy, because no one here can understand the drawings, and if Ding Chen is ready to let others understand what the complex parts he wants to look like, it will not take as much time as doing it himself.The only good news is that Ding Chen finally doesn't have to do it from beginning to end by himself.Ding Chen's original design concept was simple, he still needed a water wheel.However, in this scheme, the waterwheel exists as the prime mover, which is only responsible for the output of power and does not actually participate in the water transportation, which is the embodiment of the modern modular design concept, which is easy to replace and upgrade in the future.And as long as the power is sufficient, the volume of this waterwheel can be designed to be very small.The real water delivery tool is a piston that feeds water from both sides.When the piston crosses the centerline, the water inlet on the wall of the piston chamber on the side where the compression process begins is closed, and the water presses open the check valve under pressure and enters the pipeline.At the same time, the water inlet is opened on the other side to start the water absorption process.The power of this piston is provided by the prime mover through a crank linkage.The piston body is sealed by turbulent flow using a watertight groove.This is also the main idea of Ding Chen to solve the sealing problem in this scheme.No way, he didn't have anything in his hand that could be used as a sealing material.Therefore, the focus of his plan is the crank connecting rod mechanism, and it is completely ill-intentioned to talk about the piston with Ye Dai.In Ding Chen's view, this system is simple enough, but there are still problems in the actual construction process.The first is the construction of the waterwheel, Ding Chen's original design was to make the waterwheel as small as possible, so that it is easier to build and maintain, but he soon found that this plan did not work.When the size of the waterwheel is reduced, the speed will increase significantly, which will increase the requirements for the bearing material.In addition, when the rotational speed increases, the frequency of rotation of components such as connecting rods and cranks also increases.Due to the limitation of machining accuracy, the clearance of these rotary parts is certainly large, and impact may occur when changing the direction of movement, which can then further deteriorate the working environment and reduce the service life.Ding Chen is a serious professional, and he has also designed countless times more complex systems than this, and has actual construction experience, so he can foresee most of the common problems in the design stage, and does not need to find and solve them after the actual construction, saving a lot of time and costs.This alone has already shocked Ye Dai, who works with him.Because Ding Chen would always explain to her the reasons for changing his design plan, and most of them were not considered by Ye Dai at all.She really didn't understand why the gap between herself and Ding Chen would be so big if she was also engaged in design.Ding Chen actually didn't mind being a little more high-profile.Pretending to be a pig and eating a tiger is a slap in the face, which is not so interesting in daily life.Speaking of which, he is still very willing to enjoy the feeling of being worshipped.It's a pity that although he doesn't like to be low-key, he never thought of stealing Ye Dai's limelight, and besides, this kind of professional coercion can only be pretended in front of professionals, and laymen can't understand it.Don't look at Ye Dai's proposal after everyone has no opinion, that's because people believe in Ye Dai, even if the plan fails in the end, everyone is willing to accept it, because they have no choice.If the person who proposed this plan was Ding Chen, most of the first reaction of Dad and others was to shake their heads, joking, you want to overturn the plan we have used for many years, you honestly say what do you want to do, so Ding Chen will tell Ye Dai not to tell others, he is the real designer of this plan.When he made this request by the river, Ye Dai didn't understand it, and vaguely reminded him that it was very helpful for Ding Chen to stay in the apartment if he showed enough ability.It took Ding Chen a moment to make Ye Dai understand that he didn't really care if he could stay, and he never even thought of staying here for a long time.He is willing to help the apartment build a watermill because he wants to help Ye Dai and has nothing to do with other people.To be honest, it can be seen that Ye Dai was very moved at that time, but she was definitely not particularly moved, because she didn't mean to make a promise at all, and let Ding Chen be entangled for a long time.Ding Chen's previous experience told him that only the trust of managers is the key to the smooth progress of the project, since he is not willing to spend a lot of energy to cultivate this trust, it is better to use the banner of Ye Dai to brush the favorability of the girl.In this matter, Ye Dai actually has her own careful thoughts.No matter how important Ding Chen is, he is not a person in the apartment after all.To gain the trust of Daddy and others, he needs to pay a lot of additional costs, but it is better to strengthen his voice.Ye Dai admired her father since she was a child, thinking that he was omnipotent.But when I grew up, I thought back to what my father had done, and I felt that my father had made a lot of mistakes that he shouldn't have made in the power struggle.Now that there is an opportunity for her to change these mistakes, she is naturally unwilling to give up.So after Ding Chen expressed her low-key will, she took Ding Chen's design as her own.Fortunately, she herself also has a certain foundation in mechanical design, and she does not need to learn and sell when relaying the design plan to others.On the contrary, because of participating in it, you can improve your own design ability faster.Ding Chen was stuffy in the house for two days, and after running back and forth by the river for two more years, he finally decided on the final design plan.Then it's time to get into the actual manufacturing phase.It's not that he is so confident in himself that he doesn't even need trial production.It's because time is running out.Corn will soon be harvested here, and winter wheat will be planted.These require a lot of labor.At that time, there will be no manpower to follow Ding Chen to carry out the project.In fact, in the days when Ye Dai disappeared, Dad and the others were also ready to lose her forever, so they conceived a solution that could solve the water source.That is to dig a canal by the river to the bottom of the apartment building.This solution is relatively simple, but it requires a lot of earthwork and has a very important hidden danger.That's the apartment, where there is a three-month freeze period every year.At its coldest time, the outside temperature will reach minus 20 degrees Celsius.The big river will certainly not freeze, but the canal is not capable of doing so.In winter, you have to go to the river to fetch water, which is not only dangerous but also inefficient.This is also the reason why Dad and others still support Ye Dai to build a waterwheel in such a tight manpower situation, water is too important in daily life.aa2705221，，； mobile phone reading,