Questions tagged [hub]

Concerning the parts and mechanism of bike gearing, both internal and external. Multi-speed, single-speed, fixed and freewheel.

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1answer
894 views

What type of hubs attach on only one side? [duplicate]

I wish to build a tricycle and one of the limiting factors is getting the front hubs. I search for tricycle hubs on eBay and get nothing useful. I need both the hub and axle or the axle dimension has ...
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4answers
315 views

Can an imperfect hub make a disc rotor rub?

I had a 160mm disc rotor on a road bike that was rubbing a bit in one spot, not severely, but enough for me to notice. I've tried to true it a few times over the past couple months with little ...
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2answers
137 views

Loose Hub on front wheel

Front wheel hub is loose and the whole thing wobbles a bit. Im a fan of dubstep but there's a little too much wubwub in my hub. How do I tighten that bad boy up properly? Thanks!
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2answers
4k views

How to recognise a 6-speed freewheel compatible hub?

I need to change the freewheel and the hub on my road bike and have been looking for a suitable replacement. I wish to keep my rim so I will rebuild the wheel. Also, I want to stay with a 6 speed ...
2
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1answer
717 views

Fixed gear conversion - hub spacers

I am converting my 80s steel peugeot to a fixed gear. I have purchased most of the parts an had a wheel built onto a SS hub. Now, SS hubs are narrower than road hubs - 120mm vs 130mm (although I ...
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1answer
504 views

Has Shimano produced Ultegra 600 Hub Set, 32 hole?

I found this item at an online shop, but can not find infomation about this product. Anyone knows this hub set? and any review infomation available there?
2
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1answer
3k views

What hub to purchase for a GT aggressor?

I have a GT Aggressor 1.0 Specs here: http://www.gtbicycles.com/2013/bikes/mountain/trail/aggressor-1-0 Recently on a long ride, the crank started to roll freely after a long downhill. i.e. when ...
2
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1answer
1k views

stiff gears and chain coming off while pedalling forward (hub gear)

So I recently replaced the back wheel's tyre on my bike. Got it all fitted back on again, and the chain and everything are in place as they should be. However, changing up gears has become very stiff ...
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2answers
8k views

Is there a tool (or preferred method) for removing the snapring that holds the cog on a coaster brake hub?

I was overhauling a coaster hub the other day. The snapring was recessesed and no screwdriver in my arsenal was small enough to remove the piece. Park recommends using a small screwdriver to remove ...
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1answer
40 views

15g / 1.8mm spokes compatibility

I usually use double butted 2mm spokes that are 1.8mm in the middle. In the past, though, I have used 1.8mm straight guage spokes when I was able to drill the holes in the hub flanges myself to a ...
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1answer
74 views

12-32 freewheel cluster?

Does anyone manufacture a 12-32 7-speed freewheel cluster to replace the current 13-28 on my 20" Dahon, with a view to touring with panniers? If that's impossible, & I decide to buy a 20" freehub (...
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1answer
230 views

Are sealed bearings equal to cartridge bearings in single speed hubs?

Single speed hubs are often speced with sealed bearings. In my brief market search I haven't seen any hubs with cartridge bearings in the specifications. Are sealed bearings used synonymous with ...
2
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1answer
140 views

When I stop pedaling my bike the rear gears keep turning, is this an easy fix? Bike is a vintage Raleigh Grand Prix

Raleigh Grand Prix chain and rear hub keep turning when coasting
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1answer
2k views

Is it possible to use a 9 speed rear shifter with 11 speed cogs/cassette? Is there a disadvantage?

I'm new to biking and I plan to upgrade my bike, but with limited funds I can only upgrade the wheelset and cogs(cassette). Is it okay if I add the 11spd cogs but my shifter is only 9 speed (limited ...
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1answer
3k views

Is it usual for a freehub to have play? [duplicate]

I have a new rear wheel (Shimano Ultegra WH-6800) and the freehub has about 1mm-2mm of play in it. When the cassette is installed and the wheel is on the bike I'm getting a lot of wobble which is ...
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1answer
1k views

Rear wheel doesn't turn with cassette

I just got a used mountain bike and on my first trip my rear wheel stopped turning with the cassette. When I pedal it turns the cassette and the gears still change smoothly but it doesnt turn the rear ...
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2answers
3k views

Will two spacers between the cassette and the hub effect the chain line?

So I have a set of custom wheels (White Industries T11 hubs) and when the cassette is correctly fastened to the hub with the single spacer provided the cassette cogs can be moved in the direction ...
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1answer
1k views

Unknown freehub, trying to source

I have a neighbours daughters bike to fix at the moment. The freehub is totally seized. I've removed the freehub from the hub itself, but can't identify it nor have I see any like it. It doesn't have ...
2
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1answer
106 views

What 's the size of bearing?

What's the size of ball bearing on WH-R550 hub, is it 1/4" for the front one and rear one ? Can I replace them with 1/4" ceramic bearing ? Thanks
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0answers
63 views

DT Swiss 370 hub not spinning smoothly in thru axle frame (end caps?)

I have a brand new rear wheel that uses a DT Swiss 370 hub. (From what I understand, the 370 is the same as the 350 except with pawls instead of a ratchet.) I'm trying to use it on a 12x142 thru axle ...
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0answers
69 views

What does the brake adjuster nut do? Sturmey Archer S2C coaster brake hub

Looking at the schematics of the sturmey archer S2C hub I noticed this part: 2 HMN425 Brake Adjuster Nut (Xylan) And I was wondering, what does it exactly adjust? Does it adjust the brake ...
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1answer
189 views

I can't extract sealed bearings out of the wheel

I face the problem again of extracting the bearings, this time out of the wheel of my Giant XTC Advanced 29” 1.5 2017, Giant wheel system, hub OEM manufactured by Formula. Once removed caps and ...
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1answer
3k views

Identifying Rear Axle Size

I've got a bent QR rear axle and am looking for a replacement. Seems that these come in 9.5 and 10 mm sizes with a couple of different threadings. When I measure the OD of the threads I get around 9.8 ...
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3answers
634 views

Can any dynamo hub get the electricity rotating with the spokes?

I want to make wheel LEDs powered by a dynamo hub. I was wondering if that's even possible. Any ideas or models?
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4answers
1k views

Big tires are rubbing in certain conditions so how can I fix my rear wheel play issues?

I have a 2007 Tarmac Expert Double with a Mavic Kysrium Equipe rim spoked to a Mavic Kysrium Equipe, 24 hole, Mavic QR rear hub. I recently upgraded to 28mm tires from 25mm and I had the rear wheel ...
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3answers
203 views

Reassembling rear wheel hub

I have a ten year old decathlon cheapo bike and I wanted to take out the axle out of the rear wheel to see if I could replace it with a quick release mechanism and also learn a bit about how it works (...
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1answer
329 views

Are thru-axles generally hollow or solid?

Need to know if these thru axles (of any size) have an internal diameter or are completely solid. How common is each type?
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2answers
643 views

Hub dynamos and standlights

I've been searching for the answer to this for a while now and still none the wiser so trying on here... I've recently bought a second hand hub dynamo and am looking to get some used lights to go ...
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2answers
67 views

Visible play in the front wheel that is not in the thru axle but in the hub itself? (video included)

The video shows that the play seems to be in the hub: Is it the bearings causing this? Are they worn out or not adjusted? What steps can I take to resolve this play?
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4answers
614 views

Use Brompton BWR 3-speed hub to create a full 700c wheel?

I have been looking at getting an internal gear hub wheel for my commuter. I currently ride a fixie and I find myself wanting a lower gear at stop lights and a higher gear in straight aways. Basically ...
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2answers
890 views

Is centering axle by eye good enough?

I took apart my shimano m770 front and rear hubs, and removed both (!!) cones on each axle. When reassembling everything I ran into the issue of re-centering the axles (so that the rims run in the ...
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1answer
672 views

Hubs compatible with 7 speed cassette

I have one Gt aggressor 2.0 2014 and want to make some upgrade. So someone told me to buy a new hub to use with a 9 speed cassette. I want to buy the hub but later the 9v cassette, so has any hub can ...
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1answer
163 views

How to get a replacement rear axle for a Giant ATX 2

I need to replace the rear axle for my Giant ATX 2. See my related question. How to I get one? I found some links on Amazon, but I am not sure they would fit or about the quality of them. I need an ...
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1answer
6k views

Rear Wheel Jamming on kids bike after Training Wheels

We got our son a Hyper Metro bicycle from walmart for Christmas and I assembled it with no problem. We also go training wheels for it and when I installed them, the issues began. The rear wheel will ...
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5answers
196 views

How to tell if a hub uses sealed bearings or loose ones?

My rear hub is dead. Tt has tons of play and I'm planning to replace it with a new Shimano one. Everyone suggests me to get one with sealed bearings, how can I tell if a hub uses sealed or ...
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1answer
122 views

What is the difference between hub-cone type rear hubs?

Assume a rear hub that consist of an axle, hub, cones, loose bearings, lock-nut, with hub space = 135mm, with bolt-on disc brake Example hubs Hub 1: Shimano XT FH-M756 Cost Eur40 Hub 2: Cost Eur23 ...
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2answers
506 views

RPM regulation of direct hub motors

I found this bike push-trailer. Because the trailer project is open-source I discovered that the used hub motor is MUXUS XF40 (specs here) In many places on the internet a learned that if such ...
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2answers
161 views

Hub sticking - friction

Bike I got used and happy with the price for frame alone but I don't know the history. Kris King hub with significant drag. With cassette off and just a rim if spin it hard I get 5 revolutions. I ...
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2answers
198 views

Is this hub shot?

While inspecting a used road bike ($200) I pulled the rear wheel off to check the hub. I twisted the axle to see if there was any damage. It wasn't at all difficult to turn it, but there was a bit of ...
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3answers
3k views

My back wheel isn't connected to the gears

I have an old bike it says Via Montega on the body if that helps. I was riding it earlier when the pedaling stopped resulting in forward motion. I thought the chain might have come loose but it is ...
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3answers
400 views

One vs Two Piece Axle?

After finding out my bike has a road rear (130 mm) & disc brakes, it's been difficult to source rear hubs. Cyclocross allows disc brakes, and more commuter/cx frames are appearing but all seem to ...
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1answer
341 views

Changing Scott Scale 960 2019/2020 rear hub to thru-axle?

I'm interested to buy Scott Scale 960, but I would like to change rear hub from QR to 10 or 12mm thru-axle. Is it possible with or without changing rear hub? What kind of hub would it fit in case it ...
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1answer
193 views

Diagnosing hub wobble (Shimano Nexus)

I have a Babboe City cargo bike with a Shimano Nexus 7 rear hub. Just coming into home on my last ride there was a bit of noise from the drivetrain and, on closer inspection, some other symptoms. The ...
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2answers
667 views

Freehub Seal Orientation “Axis Sport Disc”

I've serviced my freehub, and on putting it back together am unsure of the correct orientation of the seal between the hub body and the freehub. I have a 2018 Specialized Diverge E5 Sport, with a ...
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2answers
211 views

Coaster brake: concave sprocket orientation

The sprocket for my coaster brake hub is shaped concavely in the middle, it is not symmetrical. I've seen some people on Youtube who had it mounted on the hub facing inward, and others facing outward. ...
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1answer
2k views

Play in rear wheel hub

I've got some play in the rear wheel hub, which makes the wheel move sideways a bit. Here's a video: https://drive.google.com/open?id=1EpXNE9YYdzwxotgWbCeWi2DM9FOlmY7A How can I fix this? Do I have ...
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2answers
234 views

Pedal and Cassette Shake

I really need your suggestions. The situation is bellow: I have bought brand new one "Specialized Rockhopper Sport 29" 2017 satin navy-hyper" in a official dealer of Specialized. When i arrived at ...
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2answers
2k views

15T Freewheel Which Works on Flip Flop Hub

I am building a Single Speed Freewheel and I read somewhere that manufactures don't make 15T freewheels that fit on a Flip Flop hub; only 16t and bigger. However, I would like a gain ratio above 3 and ...
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3answers
1k views

Rear hub bearing replacement

Bike noob here. I have a Quando rear hub with a busted cap? By cap I mean the cap covering the bearings beneath the cone. This cap is separate from the bearings. It hold the balls in place. Is it ...
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1answer
4k views

What is measured by hub size?

When they say 135mm hub I don't particularly understand. What are you measuring? The radius? They say that a particular hub will be short for fitting gears. I say if I change rear wheel completely, ...

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