The Giant ATX777 transmission is better changed to BB7 or the original low end oil dish

The oil disc is better than the line disc, and even Yanhao's oil disc is better than BB7 in some aspects.

The wire disc needs to be debugged frequently, otherwise it will rub the disc and the oil disc does not need these, and there is basically no need to move it after installation.

The oil pan does not need to constantly check the wire set for water, sand, rust, etc. in order to maintain the feel. It will only feel better and better with it.

Last but not least, pinching the wire disc on long downhill sections is a test of your finger strength, and the oil disc will save you a lot of effort in this regard.

The above are all about oil discs that are better than wire discs, and there are still people who are obsessed with wire discs. It may be that you are worried that the oil disc will leak oil, but in fact, the oil disc leakage is not common, and the probability is much lower than that of the brake line of the wire disc.

However, it is true that the brake force of the low-end oil disc is generally soft, which is not as good as BB7, and many times there will be a feeling of untenable. But it will change a lot after changing to metal to make the film and a good disc, and many people think that cheap oil discs do not have a sense of line, I think this is wrong, oil dishes also have a sense of line.

In general, the oil disc at the same price still has an advantage over the line disc.

The oil dish is good, because it is original, with the performance of the car, and there is a special consideration of the Giant design team, and the specific situation depends on your configuration.

Don't think that oil discs are easy to leak, there is no such thing as said on the Internet, many of my riding friends say that they will not return if they do not wrestle. After all, the oil disc brake feels good.

The Giant ATX777 uses a SHIMANOM390 27-speed shifter, which is the first three and the rear nine.

1. The transmission should be toggled while riding, and the chain must be pedal slowly when dialing from the pinion to the big gear, and then speed up the riding speed after the chain is fully on the big gear, and vice versa. In addition, the gear on the pedal has the opposite effect of the gear on the rear wheel, so if you want to ride more briskly, you can also use the front gear smaller or the rear gear larger.

If you want to speed up your ride, do the opposite. The main function of the shifting is reflected in the climbing, if you are on flat ground or downwind, use a heavier riding style (big in the front and small in the back), if you want to climb the hill, choose a light riding style (small in the front and large in the back), as long as you feel no problem.

2. Shift speed before going uphill: When riding a mountain bike and need to change speed when encountering uphill, you must have good foresight, don't wait until you ride on the slope and then change speed (deceleration), you must change speed before going uphill, so that you need to ensure the speed and stepping speed when going uphill, and it is not easy to damage your knees.

3. Flat road shifting: remember to tread evenly when shifting, don't change gears (accelerate) when accelerating sharply, sometimes the transmission can not be very smooth when shifting, then you can push the gear lever a little past until the gear is in place.

Is the shifting inaccurate or is there a delay?

The general adjustment method is to adjust the tightening and release screws of the connection fingers, and change as you adjust until it fits.

Generally, the front dial is not a big problem, the screw above the adjustment can be, the rear dial has more problems, if the screw is not good, you have to adjust the limit screw on the rear dial, this is best to go to the car dealer to find a professional for you to adjust, because a little move will affect a lot.

ps: It's my own car experience, at that time my car speed change can't be adjusted, the rear dial speed change is not smooth, the front dial rubs the chain, and finally found that the flywheel is loose, tight and all solved.

Left change 3 max, right change 8 max. Be careful not to appear left 1 right 8, the same as the rear) or this situation, which is the most worn out of the car.

Generally speaking, when riding on flat ground, left 1 can be paired with right 1-7, left 2 can be matched with right 3-8, and left 3 can be equipped with 5-8

There are generally two schools of speed shifting on flat riding. But no matter what genre, remember that it's easiest to get started. The first is to accelerate first, let the next directly hang, this advantage is that the speed is fast, but it requires a relatively large amount of physical strength to ensure the speed.

The second is to ride slowly, moving up one gear at a time. This saves energy because the speed of the thigh movement does not change.

Uphill according to your physical strength, generally speaking, there are two gears down the small slope, that is, the next big gear on the big slope, that is. This is not a certainty, it depends on your physical strength. For example, I just ride to death, and I just have enough physical strength to go uphill.

Downhill without shifting gears. According to the inertia, you can do it. If you pursue speed, you don't explain.

As long as the wear and tear of the vehicle does not appear, there is no problem. Note that if you lose your balance and can't avoid falling, you must fall to the left, otherwise you may break the shift.

If you look at the transmission, the front disc 3 has a maximum of 42 teeth, and the rear disc 8 has a minimum of 11 teeth, so that if you support 8 with 3 supports, the wheel rotates 42 11 = laps after each pedaling. From the point of view of the number of laps, the larger the front disc and the smaller the rear disc is, the more laps the rear wheel rotates per pedal, the more suitable for high speed, but the cadence suitable for each person is different, you can try to experience it in ordinary times.

Because the size of the front and rear discs is in opposite directions, the larger the number is the faster the speed whether it is done or right, and of course, the greater the resistance to pedaling.

If you go downhill, it depends on the road conditions, if it is a mountainous area, you don't need to be too fast at first, if it is a flat road with a wide view, of course, you can use 3+8.

The uphill slope is divided into a long slope and a short slope, and if it is a short slope, it can be accelerated in advance, and it is possible to use inertia. (The problem of the transformation of kinetic energy and potential energy in junior high school physics, I will give this example when I give lectures to students).

If you have a long slope, accelerate in advance, and you need to downshift halfway, according to the slope and your own strength, but don't wait until the speed is very slow and then reduce, because you can't exert force at the moment of changing gear, if the speed is zero, you must stop, and start again after changing the speed.

The other 770 is a good cost-effective car, the configuration is very balanced, and it is also very reasonable. Early brake handicap,

When going uphill, the front 2 gears are increased to ** in turn, and if you continue to feel strained, you change the front to the smallest plate. When flattening, first change the front to the most**, and then change the back to the smallest plate in turn. Just pay attention to the brakes when going downhill, and you don't have to press hard.

Dude, we're at this level, and other favors can't help much, I hope what I said can help you a little.

The treat is free.

The Giant ATX770 uses SRAM BB5 mechanical disc brakes.

Giant ATX770 detailed configuration:

frame frame.

Dimensions xs, s, m, l

Color: Bright white, bright black, sea wave blue.

Frame Giant Aluxx mountain bike frame.

Fork Giant Win alloy hydraulic lock suspension fork components components.

Handlebar Giant alloy crossbar.

Bow Boom Giant aluminum alloy nose boom.

Saddle Bar Pump lightweight saddle bar.

Seat cushion Italian selle royel seat cushion.

DriveTrain.

Shift knob Shimano M390

Front derailleur Shimano M390

Rear derailleur Shimano M390

Brakes SRAM BB5

Wheel size: 26 inches.

Rim circumference: 2385mm

Vehicle weight: speed: 27 speeds.

Load: 200 (kg).

I haven't heard that there will be 15 models yet.