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33 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/...
thelawnet's user avatar
  • 4,210
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 ...
Nathan Knutson's user avatar
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 ...
cmaster - reinstate monica's user avatar
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 ...
Nathan Knutson's user avatar
18 votes

Rear wheels are dished. Why not "dish" the frame instead?

A reason I would see is related to the cranks: a dished frame would require to have a chainring further from the center of the bike, which can be a problem from ergonomic and structural points of view....
Renaud's user avatar
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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, ...
Criggie's user avatar
  • 124k
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 ...
David D's user avatar
  • 21.1k
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 ...
Grigory Rechistov's user avatar
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 ...
Swifty's user avatar
  • 12.8k
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 ...
Grigory Rechistov's user avatar
13 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'...
tomRedox's user avatar
  • 291
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 ...
DavidW's user avatar
  • 5,220
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 ...
Argenti Apparatus's user avatar
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 ...
Nathan Knutson's user avatar
11 votes
Accepted

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 ...
Nathan Knutson's user avatar
11 votes
Accepted

What's the difference between Shimano HG and SRAM XD free hubs?

The phrase missing here is 'Freehub body'. The freehub replaced the freewheel, mostly, which integrated the sprockets and the ratcheting mechanism. The freehub body is therefore the ratcheting ...
thelawnet's user avatar
  • 4,210
10 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 ...
kfix's user avatar
  • 211
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 ...
RoboKaren's user avatar
  • 29.3k
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.
RoboKaren's user avatar
  • 29.3k
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 ...
Nathan Knutson's user avatar
10 votes
Accepted

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 ...
Nathan Knutson's user avatar
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 ...
juhist's user avatar
  • 18.5k
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.
mikes's user avatar
  • 18.6k
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 ...
gschenk's user avatar
  • 9,650
9 votes

Cause of broken spokes (pictures included)

Another common cause for spoke breakage at the J bend is low spoke tension, or preload. As you ride, the bike momentarily "hangs" from the topmost spokes on the rim. Because its a dynamic ...
Criggie's user avatar
  • 124k
9 votes

What's the difference between Shimano HG and SRAM XD free hubs?

SRAM's XD and XDR drivers (their term) don't have splines, unlike Shimano and Campagnolo freehub bodies. Instead, their cassettes screw onto the threaded section of the driver as shown in the image ...
Weiwen Ng's user avatar
  • 31.1k
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 ...
Jeff's user avatar
  • 10k
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 ...
Victor Stanciu's user avatar
9 votes

Can I put a different manufacturer’s freehub body on my hub?

There are two parts to this question. Generally, you cannot swap freehub bodies between manufacturers. There are some exceptions to this (some hub manufacturers use DT Swiss hub mechanisms, so there ...
Adam Rice's user avatar
  • 29.9k
9 votes
Accepted

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, ...
mattnz's user avatar
  • 49.8k

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