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32 votes
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What's the verdict on hub-less circle bicycle wheels? Sturdy and "maintenance-free"?

Verdict seems to be 'this is a scam' Cyclotron is a scam https://cyclotronscam.boards.net/board/1/general-discussion Reevo is suspiciously similar https://www.reddit.com/r/shittykickstarters/comments/...
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  • 4,040
25 votes
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6-bolt vs centre-lock: pros and cons?

Centerlock largely exists because since the beginning of modern disc brakes for bikes, Shimano has more or less alone had a weird cautionary take on the physics of rotor bolts theoretically being able ...
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21 votes

What's the verdict on hub-less circle bicycle wheels? Sturdy and "maintenance-free"?

I would think about these in terms of bearings: The hubless design moves the bearing of the wheel all the way out to its circumference. As such, you get extremely long racetracks a need for many ...
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20 votes
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Freehub pawl system vs star ratchet system

Hope hubs are a very refined, reliable execution of the pawl design. They don't do much to illustrate the disadvantages of the concept that designs like the star ratchet are trying to address. One ...
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17 votes
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Remove rounded nuts/bolts from wheel on old bike

If the nuts are rounded they're stuffed. You want to remove the nuts but not damage other things, like axles. I'll assume you're talking about axle nuts, but the same ideas apply to all nuts, bolts, ...
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16 votes
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How to make a kid's bike easier to pedal

Children's bikes are usually designed with easy gearing appropriate to children. As Chris H said - they are not usually assembled by people who care that a bike is assembled correctly. From the ...
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  • 16k
15 votes
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Broken 26'' wheel

That kind of rim damage indicates over-worn brake surfaces. Whether you should replace the whole wheel is a strictly economical question which is hard to answer in general. Wheel building services and ...
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15 votes

Can my fork support disc brakes?

In order to fit a disc brake, you need a compatible fork and a compatible wheel, plus a compatible brake lever. Your fork does have a disc brake mounting already designed in, it is an International ...
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  • 11.3k
14 votes

6-bolt vs centre-lock: pros and cons?

Advantages of 6-bolt: Not being patented by Shimano means more vendors offer compatible wheels/disks. Torx bolts require a smaller tool which is often included in many multi-tools so one can always ...
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12 votes
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How to prevent freehub body damage?

From Stan's NoTubes FAQs on wheels and rims: Why is my cassette digging into my freehub body? Stan's freehubs are made lightweight using aluminum like many other brands. We recommend using ...
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  • 15.4k
12 votes

6-bolt vs centre-lock: pros and cons?

A couple more pros of centre lock: Finned rotors One big difference is that you can't get the finned Shimano Ice-Tech rotors used on the road bike groupsets in a 6-bolt configuration. E.g: or I'...
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  • 281
12 votes
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Busted my bike hub & derailleur (I think) - how bad is it?

Updated based on your edits and comments. The severed piece of metal circled in the 3rd image is one of the cage plates, and was originally attached to the lower (idler) pulley bolt. Beyond ...
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11 votes
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Chain stuck between cassette and spokes and damaged rear hub - any way to fix it?

That's a bit of a mess. Looks like the chain dinged up the hub, freehub body (that the cassette mounts on) and the spokes. The freehub body is removable, and you could possibly use a fine file to ...
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11 votes

Is it normal for a new Shimano hub to feel rough?

The intention is for it to be adjusted after the wheel is built but before it's ridden. Tension on the flanges has some effect on preload. Were it a QR hub, there's also the fact that some play is ...
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10 votes
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Special hub requirements for an 11-speed group

Shimano/SRAM 11 speed cassettes are wider than 8/9/10 speed ones. So yes, you need a new, wider freehub body, unless your old one was not very old and used a spacer to fit a 10-speed cassette. ...
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  • 2,133
10 votes

Labour cost in building a wheel

It depends. If an inexperienced person such as your regular consumer does it, it could take a few hours especially if you don't have the proper tools or preparation. If an experienced person at the ...
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  • 28.4k
10 votes

6-bolt vs centre-lock: pros and cons?

One disadvantage of 6 bolt is that you can torque one side just a bit more than the other which can cause the rotor to be just a bit warped. Center-lock torques evenly by design so there’s no risk.
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10 votes

What is this nut?

A security nut is exactly what it is. I've seen similar ones on public bike share bikes. As to where you get the tool for it, no idea. Other ones I've seen have been shrouded; this looks like you ...
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10 votes
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Cause of broken spokes (pictures included)

The grooves/enlargement shown at the hub are all normal. The path to a wheel that doesn't break spokes is use premium quality spokes (DT, Sapim, and Wheelsmith are the usual poster children), set ...
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10 votes
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Can time-till-rest be used as a hub-regrease-and-repack flag?

Keeping tabs on the condition of the hub as you describe could provide some interesting data that does relate to how in need of maintenance it is, but it also has these issues if you were trying to ...
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10 votes

Can QR cause Brinelling in hub bearing?

Brinelling happens when the contact stress exceeds the limit of the material. I don't believe you can achieve that alone with a too tight QR, although it sounds like your bearings are so tight that ...
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  • 11.4k
9 votes

Special hub requirements for an 11-speed group

As you're not clear on road vs mtb, there's two answers. For 11 spd road drivetrains Shimano uses a 1.85mm wider hub with the drive side flange closer to the centerline to compensate for the ...
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  • 8,746
9 votes
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Difference between grease

Each kind of grease will perform best at a certain temperature. And is designed for a certain speed of movement of the parts it is used at to reach and not exceed that temperature. So yes, it is ...
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  • 3,234
9 votes

Hub dynamo, maybe loose contact; maintenance?

Here's a guide for overhauling a cup-and-cone low-end Shimano dynamo: https://dl.dropboxusercontent.com/u/34057344/Overhauling_Shimano_Dynamo_Hubs.pdf The main caution from that article concerns the ...
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  • 201
9 votes

What is the “clip ring” part on my hubs?

Is there a small hole that was covered by the ring? If so it covers a lubrication port. Many old Raleigh, and other utility type hubs came with such a port.
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  • 18k
9 votes

Are thru-axles generally hollow or solid?

Thru Axles are a standard for wheel fasteners that was introduced fairly recently for MTB and later for road bikes. Today thru axles come typically in 15 mm or 12 mm diametres. If you mean thse, they ...
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  • 8,657
9 votes

Rear cassette Identification

The specs for the Schwinn Traverse, made by Pacific cycles circa 2010, are dearth. What I have seen on the Schwinn Traverse is that it is 21 speed (3x7 Shimano, w/SRAM grip shift) mountain style bike ...
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  • 6,868
9 votes

Questions about Boost frames and cranksets

You are correct. The cassette hasn't moved, so the rear chainline hasn't changed, so you don't need to compensate for it. Note however that a non-boost crank in a boost frame might have chainstay ...
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9 votes
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Does a z-shaped cone wrench exist?

No, its not not needed. Remove the cone from the non-drive side, and the axle slides out the drive side. Assembly means setting the position of the drive side cone and locking it with the lock nut, ...
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  • 39.3k
8 votes

Do I require a washer/spacer/shim between a hub's cone nut and lock nut?

Some axles [Maillard, Campag etc.] have a keyway along the threaded portions. An internal-tabbed washer slides on , between the cone and the locknut, to prevent locknut rotation also spinning the cone ...
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