33
votes
Accepted
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/...
- 4,240
26
votes
Accepted
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 ...
- 87k
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 ...
20
votes
Accepted
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 ...
- 87k
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....
- 22.7k
17
votes
Accepted
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, ...
- 129k
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 ...
- 22.9k
15
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 ...
- 14.3k
14
votes
Accepted
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 ...
- 14.3k
14
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 ...
- 12.9k
14
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 ...
- 4,240
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'...
- 291
13
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 ...
- 87k
13
votes
Accepted
Is a new Tourney rear hub better than a 15 year old Deore hub?
Better usually refers to personal preferences, so it's hard to answer "objectively", at least without knowing the priorities. Some will consider the Tourney better because it does the same ...
- 22.7k
12
votes
Accepted
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 ...
- 5,452
11
votes
Accepted
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 ...
- 75.9k
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 ...
- 87k
11
votes
Accepted
Hyperglide vs HG10/HG11/HG12
You seem to be asking about the freehub body dimensional standards as opposed to the features of the cassettes that go on each one per se, so I'll limit it to that.
One of the confusing things is a ...
- 87k
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 ...
- 29.4k
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.
- 29.4k
10
votes
Accepted
Can I replace loose ball bearings with caged ball bearings in my hub?
Yes, you can get caged bearings to go in the hub. RJ The Bike Guy seems to have several YouTube how-to videos (hint: they have to go the right way round)
No, they are not better than loose balls. ...
- 12.9k
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 ...
- 87k
10
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 ...
- 35.2k
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 ...
- 87k
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 ...
- 20.5k
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.
- 18.8k
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 ...
- 9,808
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 ...
- 129k
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 ...
- 11.1k
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 ...
- 538
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