Why the new Shimano hubs don t feel smooth

Shimano or ordinary bead hubs require a certain amount of running-in, while bead hubs such as XT, XTR and some other high-end brands have been pre-ground, so the rolling effect is very good. However, the Himano's hubs are still very durable, and the waterproof and dustproof effects are very good, which is much better than a general bearing hub, which is suitable for lazy people.

Because the level is limited, I don't adjust it myself, I hope that with the increase in kilometers, it will not be worse In the future, I will upgrade and buy Himmano hubs or buy XT or above, otherwise it is not as worry-free as other brands of bearings As for the problem of the shaft, it is difficult to say We have not seen the relevant inspection report When it comes to surface roughness, the rigidity of the shaft, the roundness, the cylindricity, etc., but as such a small shaft, the load is not large, and the accuracy requirements are not so high, it really shouldn't be done badly.

If you look at the books on bearings, you will understand that rolling bearings have the longest life when they have a little preload (negative clearance in a few um). Shimano's XT and above level polishing is made more finely and can be adjusted just right. The machining accuracy of the lower level is not so high, and in order to ensure that there is no positive clearance, the preload may be larger, and the rotation is not so smooth.

You can adjust it yourself. When I got my bike, the front and rear gears were readjusted, the front wheel was Jiuyu balls, which were too tight, and the rear wheel was Shimano RM40, which was too loose and had obvious clearance. Adjust it to the extent that you can't feel the play with your hand when shaking vigorously, and there is a little "pimple" but it is very smooth.

It can swing back and forth 6-10 times on loading. That's it.

Shimano's hubs are good for pressing the road.

Because the level is limited, I don't adjust it myself, and I hope that with the increase in kilometers, it will not be worse In the future, upgrade and buy Himmano hubs, or buy XT or above, otherwise it is not as worry-free as other brands of bearings As for the problem of the shaft, it is difficult to say We have not seen the relevant inspection report It involves surface roughness, the rigidity of the shaft, the roundness, the cylindricity, etc. However, as such a small shaft, the load is not large, and the accuracy requirements are not so high

The hub is HB-M595, just ridden 180 kilometers Last night, the front wheel and inner and outer tires were all removed, only hold the hub axis and let the rim rotate, feel the wheel wheel when it rotates There is a sense of unevenness in the hub The rear wheel is not dismantled, but the back does not need to be dismantled, only the rear wheel is cocked, let it rotate You can feel the kind of unsmoothness, It's really frustrating, I can only endure it, and I can only do this After riding for a while, look at it View the original post

Anyone who uses shimano hubs knows it. There are surprises after 500 km. View the original post

It may be a low grade.,Upgrade to XT hubs and it's much more moist.,My XT hubs are super moist View the original post".

Since Shimano hubs are so bad, why do you generally recommend Shimano hubs for long distances? View the original post

Are the beads of my loose bead hub installed at the factory or are they installed on site by the car master with butter and loose beads when loading?? Which friend knows, please advise. View the original post

The hub is not powerful, it's really troublesome, make do with it, take a look at it after a while, and change the bearing, check the original post

Mine is also the Cimano M590V brake hub, the rear wheel was not very moist at the beginning, and now it is almost a few hundred kilometers, it seems to be better, View the original post

Shimano's hubs are good for pressing the road. View the original post

These are all theories, and there is no definite conclusion.

The younger brother's car is equipped with an ultegra 6700 wheelset and has ridden for 10,000 kilometers, and I want to say that the plate wheels are upgraded.

Yu Ji changed his hand to the Reynolds DV46T board wheels, and if he wanted to say that he would tremble like a speeding car.

The gods on the 01 will tell you that the DT 240S is too smooth, but I'm sure the Ultegra 6700 hub is as good as the conclusion.

You don't need to spend a lot of money to buy a super smooth hub, and you don't need to change the set of tires, which is not much benefit, just practice your heart and lungs, train your feet, and practice your car.

Shimano hubs are mainly ball structure Ball structure hub with small turning radius High sensitivity Good stability Now there are M525 M675 M785 M8000 and so on, these are very good hubs.

The road hub is not bad, and the mountain hub needs at least XT M785

The Shimano SLX hub is one of the highest grade in Shimano's mountain bike lineup. The durability and lubrication are very good, and it is a loose ball angular contact bearing with excellent cornering performance.

It is suitable for more professional riding slag riders. It is very suitable for imitation when installed in training cars or competition cars.

There are many reasons why the ride is not smooth, such as the chain, the axle, is the chain out of oil? Or is it a chain? Or the axle is out of oil, but generally the axle does not need to be oiled.

If the chain oil will rattle when riding, just put some oil, recommend sewing machine oil, I have used it, and the effect is good. If it's a chain, it will sound when riding, so just tune it.

There are more possibilities, eg.

1. The hub itself is short of oil.

2. The tire pressure is not enough.

3. The other party is a road tire, or it may be that the gear ratio is different.

4. The pulley inside the sand and gravel of the rear wheel may have friction where the maximum gear of the rear wheel, add or subtract the brake gasket appropriately, and tighten the nut in the rear wheel.

5. The brakes are disrupted.

XT is of course the higher strength of XTR compared to XTR's hubs. After all, the ** of XTR is more than twice that of XT.

In addition to the characteristics of the Deore XT, the XTR hub is more advanced than the XT hub in that it is:

The gears and bowls of the hub are all super polished, and stainless steel balls are used, the hub shell is made of high duralumin, the M970 975 has a newly improved rear hub seal, the new 4 pawl clearance is smaller, and the shaft is made of titanium alloy.

So compared to XT hubs, XTR hubs are more moist and stronger.

There is not much difference between the XTR and XT hubs in terms of strength, the difference is in the workmanship: the gears and bowls of the XTR hubs are all super polished, and stainless steel balls are used, the hub shell is made of high duralumin, the M970 975 is newly improved after the hub is sealed, the new 4 pawl clearance is smaller, and the shaft is made of titanium alloy.

Say a lot of terms and parameters you don't understand, anyway, XTR pursues weight, XT pursues strength, there must be a difference, that is, it can't be felt normally, and only forcible damage can make a difference.

It's really hard to say the strength, and it's really hard to see these two broken. It should be that xtr will have an advantage.

However, normal XT is sufficient.

The difference is there.

Pretty much the same.

xtr has one more r than xt. That's what race means.

Weight has an advantage. Everything else is pretty much the same.