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Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

author:Beautiful ride

Source : Biketo.com| Beauty Riding Network Author : Stupid Fat Grocery Store

Hello everyone, I'm stupid fat, a video migrant worker who likes to ride a bicycle. As we all know, I often install some non-mainstream bicycles for your reference or criticism, this issue I have brought many professional riders despised by the bend of the two or eight bars, gravel frame mounted road car narrow tires, of which the most uncomfortable for professional riders is my proud fenders, mountain teeth, domestic kits.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

I installed this little black at the end of December last year, and now I have been riding for 5 months, close to 2,000 kilometers. In the assembly of bicycles, novice entry and many other videos as props appeared, during the comment that let me talk about this car, in fact, I also want to hurry out of the video, but not urgent, must be full of experience, in order to produce a dry goods full of useful video for the majority of cycling enthusiasts. This issue is a bit wordy, sharing my riding experience from the perspective of demand, frames, kits, and fenders. Of course, I am a power is not a high heart rate of vegetable legs, this small black has not been out of Guangzhou since the landing, there is a one-sided place please communicate more.

demand

I buy a car according to my own physical strength and riding scene as a demand, I can't reach the level of competition, cycling is just a fitness sport, I don't pull with others, most of the time I ride by myself. From this, it was concluded that a bicycle between 2,000 and 10,000 yuan could meet my needs, and my wife approved a budget of less than 5,000 yuan for me.

The cruising speed is also 30 kilometers per hour, the average speed is less than 40, and the riding distance is more than 100 kilometers. From this, the endurance comfort road bike is more suitable for me.

Occasionally carrying a tripod and camera to climb the mountain. From this, I needed a compression dental disc and a large flywheel above 30T.

The road conditions are mostly paved, and occasionally a bit bad. From this, tires above 28C are more suitable for me.

The road near my house is more pothole, sprinklers water the road every day, all the way to the construction site, the road surface is always wet. As I said before, I don't race, and I can consider installing fenders, so it is best to have fender mounting holes in the frame.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲ Bad urban non-motorized roads

According to the demand in the dazzling market to find a few laps, Decathlon RC500 road car is the best for me, but the problem is out of stock. The Shimano kit also went up in price and out of stock, but fortunately I thought I had a good handiwork for assembling the bike, so I assembled this little black with an Asian machine gravel frame, a Shuntai kit, and a horse brand 28C tire.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲My configuration table

Gravel frame

First of all, talk about the frame group, overall very satisfied, less than two thousand yuan of aluminum frame carbon fork, my evaluation of it is - pragmatic. There is no fancy livery, there is no use of broken duct type in order to cater to Xiao bai, riding purpose of the entry model, I prefer the traditional round tube frame, because my physical strength can not reach the level of aerodynamics, so the wind break shape relative to the round pipe to increase the weight, meaningless to me. The valuable thing about this frame group is the design of the barrel shaft disc brake, which is relatively incapable of rubbing the disc.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲Barrel shaft disc brake

The frame has a STR value of up to 1.46, which means that the frame geometry is biased towards comfort endurance. Together with a standard road bike, even if I cut the fork top tube to the lowest, the handlebar height is still a lot more. So some people say that my car is a mountain bike drop, which does not confirm that sentence, gravel road is a hard fork mountain horse in the form of a bend, and the best destination of the mountain horse party may be the gravel road.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲ Very long head tube, very small drop

If you load the car yourself, remember the brake line pipe with the inner trace, and the section inside the frame wraps two or three soft protective sleeves. Otherwise, on bumpy roads, the brake line pipe may come into contact with the inner wall of the frame, resulting in annoying noise.

I think the biggest problem with this frame group is the inconsistency between the front and rear maximum compatible tire widths, the maximum compatibility of the rear wheels is 38C, and the maximum compatibility of the front wheels is 45C. I installed the 28C tire, the rear fork looks more harmonious, but the front fork looks past, the 28C tire has a huge gap around, the visual effect is a bit like my neighbor's mountain carriage. There was nothing wrong with riding it, but I always felt uncomfortable and strange when I looked at it.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲ It's like 42 feet wearing 45 size shoes

Shuntai suite

The mainstream suite brand has been divided by Shimano (Japan), Speedlink (USA), CP (Italy), and has previously used the fingering and forward dialing of micro-rotation and blueprint, but has not tried the full set is domestic. When I loaded the car, the Shimano price increase was too mad, so I set my sights on the domestic kit. So why did you decide to buy Shuntai? The story goes back a few months before loading, when I went to a car shop to buy a head basket and asked him to install the lady's car and adjust the handlebars.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲ My commuter grocery cart

During the period, some riders asked the boss how the Shuntai suite was, and the boss replied that those who did not understand the car bought domestically, and those who understood the car used Shimano. I rode the lady's car for a few days and found that the front basket was loose and the handlebars were crooked again, so I went to him again for repairs, and after a few more days of riding still had the same problem. Finally, I read the ParkTool Blue Book and went to the hardware store to buy a big wrench and do it myself. The car shop owner's repair skills made me doubt his remarks, so I had to use the domestic kit myself to see if Shuntai could do it.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲ This book is a bit difficult to buy in China

I bought the Shuntai 2*9 road kit, which is essentially a Shuntai small set, the hand change plus front and rear dial is Shuntai's own, and the tooth disc flywheel chain brakes are other brands. The Shuntai kit has the appearance of Shimano, but the shifting logic is similar to the speed link, shallow downshift, deep press upshift. However, in order to circumvent the patent, it integrates the brake and transmission operations in one operating lever. And the upshift operation feels less tough than the speed link, and beginners have to spend a little effort to get used to it.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲ Shuntai hand change

When it comes to the accuracy of the shift, everyone can be completely assured of Shuntai, which is completely fine compared with the Shimano SORA suite. Taking Shuntai to compete is difficult for strong people, used for sports and fitness, combined with the low price I can not find a fault. Many people on the Internet say that the tension of the spring at the back is small, which does exist, and it is rare to say what consequences it will bring. The consequence is to downshift at the same time as vigorously pedaling, because the chain is pulled very tightly, and the force of the rear spring pulling the chain is not enough, resulting in a slow reaction to the shift.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲ Shuntai rear dial

As for the loose hand rubber sleeve that everyone generally criticizes, I think that such a low price does not expect to use how good the rubber material can be. What annoyed me the most was that the transmission line pipe could not be completely buried in the hand change, and the upper protrusion was just the place where the palm was pressed down, resulting in a poor grip. I don't know if the new model has improved, I provide two directions of the outlet, everyone uses the Shuntai hand to change the car, if the line is protruding, it is best to take the line on the side of the hand change.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲The transmission line has two exit directions

Regarding the rear dial, when I loaded the car, I found that the fine-tuning screws were less tolerant than the Shimano. Taking the Shimano SORA rear dial as an example, I twist and fine-tune the screw half a circle, the speed accuracy will not change much, and the Shuntai rear dial, I only twist one block, about one eighth of the circle, the speed has a clear reaction, which makes me need to spend more patience when adjusting the rear dial. If the transmission line is too sensitive, the maintenance cycle will be relatively shorter, because the long-term use of the conduit will have a slight stretch, I rode nearly 2000 kilometers, the back upshift is not smooth, need to rotate the spin counterclockwise fine-tuning screws. I recommend that riders choose shuntai kits, it is best to match a good point of conduit, can alleviate the above shortcomings.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

Some riders say that the big market is difficult, I also felt difficult before, before the dial I have to keep holding the upshift button, waiting for the chain to hang on the big plate and then let go. However, after I changed Haomeng's mountain tooth plate, I found that I was wrong to dial the front, and the forward dial shift became obviously crisp and clean, without the previous drag mud and water. The original front dial does not completely determine the variable speed performance, and to a large extent, it depends on the compatibility of the tooth plate and the chain.

Dental tray

I'm a road bike, how do I install a mountain tooth plate? In order to climb steep slopes. Sometimes I get excited and like to carry a tripod and camera up the hill to take pictures. The most important thing about the climbing ability is the power-to-weight ratio, that is, the higher the output power of the human body, the lower the weight, then the theoretically the better the climbing ability. To improve the work-body ratio requires a long period of scientific training, and weight control, I like to eat roasted pork and pig's foot rice of the dead fat house, and do not know the regular coach, improve the work-body ratio of the program is counted. The second is to reduce the weight of the whole vehicle, my vehicle weight is about 10 kg, there is still a lot of room for weight loss, but the need for banknote capacity, the lighter the accessories the more expensive, and I also carry photographic equipment, the weight reduction program is of little significance.

I decided to use a flattering method to get a lower tooth ratio by changing the small tooth plate. The ratio of the number of teeth in the front disc to the number of teeth in the rear flywheel is called the tooth ratio. In the case of constant wheel diameter and cadence, the larger the gear ratio, the faster the bicycle speed, and the greater the leg strength required. The lower the gear ratio, the higher the output torque, the lighter the feel, and the steeper the slope can be climbed.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲ Mountain tooth plate, 44-28T

The price of the tooth plate becoming smaller is to sacrifice the maximum speed, and there is no way to show off the extreme speed of more than 50 kilometers in the circle of friends in the future. So why not switch to a big flywheel? This ensures extreme speed and climbs. If you want to change a larger flywheel, or the cost of high points to change the mountain back, the variable speed performance remains unchanged. Either the low cost plus the tail hook extension seat, but may affect the shifting performance. And there are two costs to changing a larger flywheel, one is that the tooth ratio gap between the gears is large, and it is easy for the largest gear to step on the flat road and the smaller gear to step on the air. The second is to change the longer chain, otherwise it will affect the transmission performance, and the replacement of the small tooth disc only needs to cut the original chain short.

For a small tooth plate I need two things, a ruler and a gear ratio calculator. According to my frame characteristics, the front-dial mounting position is too low, and the lower end of the guide plate will touch the rear fork. By measuring the axis of the central axis by measuring the distance from the guide plate in the lowest installation position in front, it can be concluded that the minimum number of teeth in my large plate is 44T. The tooth capacity of the front dial is 16T, 44-16=28, and it can be concluded that the minimum number of teeth in my small plate is 28T.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲The minimum installation height of the front dial determines the minimum platter

Open the gear ratio calculator software, enter the tire, tooth plate, flywheel, cadence and other data, you can get the speed of the corresponding gear, look at this table, the highest grade 80 cadence can step out of the speed of 41.3 kilometers per hour, for my vegetable leg is more than enough. The lowest gear is 9 km/h, which is faster than a cart.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

With theoretical knowledge, let's put it into practice. I visited Taobao and Idle Fish and found that there was no suitable road tooth plate within a thousand yuan. So I chose Haomeng's mountain tooth plate crank, and then bought another 44T and 28T discs. Note that the Q value of the mountain dental disc will be larger than the road, and some people may feel uncomfortable, so my response is to fine-tune the lock plate laterally. It may also be that the car I ride is more diverse and insensitive to changes in Q values.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲The upper side is a road tooth plate, and the lower side is a mountain tooth plate

The tooth plate was changed from 34T to 28T, and the biggest feeling was the steep slope that used to require standing and pedaling, such as the exit of the underground garage, which can now be pedaled up in a sitting position. There is also a smoother forward shift, which should be a more reasonable structure on the inside of the large market, so that the chain can be better hung on the large market.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

fender

Although every update always comments that my fender is ugly, saying that my car looks like two or eight poles, but more people ask me about the fender link, I know that competitive riders hate fenders, and I know that most people do not ride when it rains, but the city sprinklers water the road every day on time. Not every rider is starting at 30 km/h, and the fenders are also the needs of many people.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲The fender i bought before, the arc does not fit the wheel, and I feel that it is ugly and I lose it

I've used a lot of fenders, and only the folding car has the best blocking effect and the best look. The quick-release fender is not effective, and it will be crooked to the side when it encounters bumps. Most of the all-inclusive models are ugly, because the mounting holes of different models of bicycles are differently positioned, resulting in fenders not fitting the wheels, which looks very abrupt. And my popular YA2018 is actually a model of the big line of frames, their frame data and mounting hole position is almost uniform. Retrofits based on the Daxing P8 are cheap and large bowls, including fenders.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲Self-organized popular YA2018

My requirements for the fenders, preferably all-inclusive, can not be much wider than the tire width, the arc should fit the wheels, and there can be no gaps in the side view. After a long search, I finally found this all-inclusive fender that can adjust the length of the support rod. Adjust patiently and you can achieve satisfactory visual effects.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲Adjustable length of the support rod

There is a problem with the road car fender, when the crank is facing the front, the bicycle makes a sharp turn, and the fender will definitely hit the tiptoe. When bending, remember that the foot inside the bend is on the top, and the foot outside the bend is on the bottom, so that the center of gravity is better to bend, and the tip of the foot avoids touching the front wheel.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

Tires, seat cushions, locking pedals

Some audience friends asked me why I said that the tire is the first choice for modification, because the tire directly contact with the road surface can directly affect the speed, comfort, and even braking distance of the bicycle. Spending hundreds of dollars to buy top tires is one of the parts with the highest modification cost ratio. I chose more than a hundred horse brand 28C tires, subjectively feel that it has good shock filtering and puncture resistance. It should be noted that the actual width of this tire is relatively large, nominal 28C, and the measured width reaches 31 mm.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲Horse brand tire

This cushion is the third time I have bought it, and the first two cars were stolen together. Its appearance is light and not bloated, and it looks more sporty. There is a hollow design in the middle to avoid nerve compression. Most importantly, the softness and hardness of the padding inside is just right for me at 150 pounds, which is both comfortable and provides good support, allowing me to exert more strength when pedaling.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲WTB cushion

I've only used three lock pedals, and this one is the cheapest. Aside from the feeling of getting in and unlocking a bit astringent, there are no drawbacks in other aspects. Usual maintenance can add some dry lubricating oil to the spring. Improves the smoothness of entry and unlocking.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders

▲ Vig mountain lock pedal

End

In general, the cycling knowledge that everyone obtains through various channels is called learning; combined with their own actual situation, it is called xi, and the two complete processes are learning. Therefore, the views that everyone has heard about on the Internet must have their own judgment, and riding a happy and healthy bicycle is the most important. Well, the above is the video content of this issue, what is the problem, although leave a message in the comment area, I like to communicate with everyone cordially and friendly. See you in the next issue.

Group car history #5,000 yuan domestic Shuntai kit gravel road car equipped with 28C tires and fenders