Bikes, technically, are not that difficult.

The core point lies in the gears and chains, and the most rigid technical content is a manual brake system.

In the case of negligible technical difficulty, all that remains is the material problem.

However, with today's technical level, Chu Tianshu feels that there is no difficulty in making a bicycle.

However, in order for it to be a qualified commodity, it is not enough to be able to make it.

It is also necessary to consider the user experience, safety issues, cost and market.

This is all something that needs to be studied little by little.

The first thing is to determine the size of the bicycle based on the current height of people.

The diameter of the wheel, the length of the chain, the size of the gears, the shock absorption of the saddle, the center of gravity of the rider during riding......

A large item splits into more than twenty children that need attention.

Many children, due to the lack of field trips, can only be left in suspense.

There are also some sub-projects that lack data to back it up, so they can only temporarily calculate a set of formulas and wait to embed the actual usage data.

Chu Tianshu spent about half an hour to solve all the children that could be solved at present, and then found a soft ruler, measured his height, and nested it into the integrated data.

INTERVIEWER Most of the sub-projects under the bicycle project are problems to be solved when considering bicycles as a commercial project.

What problems did Chu Tianshu have to solve before he brought this business to Qi Yingzhi.

For people like Qi Yingzhi who have begun to get in touch with practical things and have made certain achievements, putting forward these problems and solving them one by one is actually more able to show their own value and ability than coming up with a novel project.

And to make a sample alone, you don't need to think about it so much.

You just need to embed your own data in it and make it real.

Chu Tianshu took the token given by Qi Zhongliu, brought all the money he could use, put on the pocket watch given by Qi Yingzhi, and walked out of King Chen's mansion alone for the second time.

After leaving the palace, Chu Tianshu was not in a hurry to buy various materials and start making bicycles.

He first bought two vegetarian boxes, and while eating, he talked to the old man who sold fried boxes.

The old man's name is Chen Kun, he is fifty-four this year, he has two sons, one son is now working as a foreman in a textile factory, the other has opened a small shop, selling grain and oil, and the two sons have added three grandsons and four granddaughters to the old man.

"It's hard to be a leader in the factory." Chu Tianshu exclaimed: "Why don't you take three or five yuan that month." ”

"Hey, where are there so many, and there are only two dollars and eight cents and five cents in the factory."

"Don't you pay taxes?"

"The factory pays taxes, what taxes do those who receive wages pay?" The old man still felt that Chu Tianshu's head was dizzy.

"It's also said that the factory pays taxes, and the wages pay what taxes."

"The eldest of my family doesn't pay taxes, but I set up a stall here and have to pay taxes."

"It's normal to set up a stall and pay taxes, and you're the boss!" Chu Tianshu smiled.

"Ugh." The old man sighed: "Who says it isn't? But I always feel that it is better to set up a stall, it is better to work in the factory, I work hard every day to touch so few, and most of it will be handed over to the imperial court, and it is more like working for the imperial court to set up a stall. ”

In the blink of an eye, it has entered the complaining link.

The seller of roasted sweet potatoes on the side also complained.

Chu Tianshu finished eating the box, complained a few words, and then left.

The more he walked, into the muddy slum-like road, Chu Tianshu first found a tavern, sat down and asked for some special turbid wine, and followed the drinkers in the tavern to brag together, saying that he had an opportunity to make a fortune in a certain year and month, but he didn't seize it, and said that he met a beautiful girl in a certain year and month.

chatted for a long time, and the topic was brought to the price of iron.

The unit price of an ordinary iron hoe is about seven cents, and the weight is about half a catty, that is, 750 grams.

The average wrought iron in the steel mill costs about two cents.

It is said that there are many models and specifications of steel, and the price is generally above five cents.

Relatively speaking, it is still relatively expensive.

Then, Chu Tianshu walked around the market.

While learning about the prices of various goods, I also observed the height of the people I met.

Based on Chu Tianshu's own height, among the samples of the one hundred and twenty-seven people he encountered, only eleven were obviously taller than him, twenty-five were about the same height as him, and the rest were all lower than him.

And these people who are lower than him are generally much lower than him.

In terms of body type, it seems that I haven't encountered any particularly fat ones.

Even those with a medium plump body can't see a few.

Chu Tianshu made a preliminary basic judgment in his heart.

Of course, this needs to be further observed.

Moreover, the sampling environment of the samples currently investigated is too homogeneous.

People in the market, in the early days, will not be the main consumers of bicycles.

In other words, the people he observes today will not be the first consumers of bicycles.

If you really want to make a bicycle and lay it out as an industry, the first target customers should be the students in the school, and the scholars and maids who have a little money but are not very rich, but are used to seeing the scene of wealth and nobility, and claim to be the best people.

The targets examined today can only be used as a reference for the long-term outlook.

After Chu Tianshu observed and investigated, he asked for directions and went to the nearby steel factory.

When he arrived at the steel plant, it was almost in the evening when the factory was about to get off work.

Chu Tianshu sat down in a tavern near the steel mill again, asked for turbid wine and small cold dishes, and slowly sat down and drank.

Not long after, the factory got off work, and one after another, workers from the steel factory poured into the tavern to drink and relieve fatigue.

However, most of them didn't ask for a pot of wine and two side dishes to sit and drink like Chu Tianshu, but stood in front of the counter and spent three cents to ask for a bowl of wine.

Occasionally, if you see an extra penny, you can get two more slices of fatty pork belly, and eat it with wine.

"Zizi." Chu Tianshu drank a glass of wine, set up a chopstick, and listened carefully to the iron factory workers in front of the counter scolding the street.

"He's got a few more handfuls of overtime, it's the end of the month soon, Yuanwang Day, and I don't say that I will give some Chu rice to eat, I just know how to increase the amount, and call the men to work overtime, this group of bitches raised."

"His mother!" The worker took off his overalls and wiped the sweat beads on his head with the sleeves of his overalls: "I don't know what kind of shit the foreman ate today, and he scolded there again, saying that grandpa didn't care about his work, and that I was lazy." ”

"I really want to punch him."

Chu Tianshu held the wine cup and felt that the atmosphere had arrived: "Then give him a punch." ”