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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
685 views

Shimano 9 speed road hub compatible with XT 11 speed cassette

I am looking to upgrade my drivetrain, essentially moving from road (Ultegra and 105) to XT mountain. I'd like to avoid replacing my rear wheel if possible though. I've read conflicting things about ...
5
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1answer
209 views

Can I put a 9mm axle hub with a Shimano roller brake into a 3/8" fork?

I have a Gazelle dutch bike which I want to upgrade with a front dynohub. It currently has a Sturmey Archer drum-brake hub dated 1988, which I believe to be a SBF model. I bought a wheel with a ...
6
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1answer
286 views

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

I recently bought a vintage Japanese Zunow road bicycle from the 1980's. The Sunshine hubs comes with small little rusty “clip rings” on both sides. Any idea what is the purpose of those clips?
3
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1answer
502 views

Wheel axle too short on the fork

I think my front wheel axle is too short, it is only half the size of the fork notch, see the picture: But if I remove the nut, the fork would touch the wheel and the disc brake. When I insert the ...
2
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1answer
86 views

Vintage Sealed Hub Maintenance Questions

Trying to do hub service for the first time... I have removed the locknuts on both sides. I'm checking to see if I should be able to hammer the axle out because it's firm. Is there supposed to be a ...
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6answers
21k views

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

I am having a new set of wheels built, and am trying to decide on whether to go with 6-bolt or centre-lock rotor interface. What are the pros and cons of the two systems?
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1answer
90 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
268 views

What road hubs models or manufacturers use replaceable cartridge/sealed bearings? [closed]

whilst opinions differ on which is better, cartridge bearings (aka sealed bearings) vs loose-ball bearings. I'm attracted cartridge bearings based hubs, because of the prospect of just periodically ...
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3answers
1k views

Can I fit a bigger cassette just by changing the hub and not getting a new wheel?

I have an old 29er that came with a 7 speed shimano tourney groupset, can I replace that with a 9-10 speed new set, just by getting new hubs? or the wheel cant handle that setup? the frame needs to be ...
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1answer
300 views

Resistance in rear hub?

I bought a new mid-range hybrid bike (Pinnacle Lithium), and for the first couple of weeks it was an absolute pleasure to ride. Then I went on holiday for two weeks, leaving it in a shed in the heat (...
2
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1answer
721 views

Purpose of locknuts+adjustable nuts on sealed hub bearings

What is the purpose of these locknuts? How tight should they be? EDIT: I'm asking because even if I remove all the nuts from the axle, leaving just the axle and the bearings, it still won't have any ...
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2answers
179 views

Innovation in cycle wheels

Do you think there is still some innovation that can be done to cycle wheels? Like changing the cycle spokes pattern? Or is it already in an optimised state?
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2answers
272 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 ...
2
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1answer
564 views

Coaster brake heat management and lubrication

I've heard that coaster brakes can reach high temperatures, so it desirable to use grease designed for high temperature applications. My questions are: Would a grease labeled max 220 °C be good ...
1
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2answers
139 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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2answers
479 views

Can I replace a 135mm/5mm QR hub with a 10mm-diameter IGH?

I have a bike whose rear wheel has "quick-release 5 x 135mm". Will I be able to replace this rear hub with an in-gear hub that has "Length 135 mm, Axis diameter 10 mm" (this is the N380 hub)?
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0answers
70 views

What's a good hub for ultra bikepacking races?

I've now twice had the body of the rear hub destroyed during bikepacking racing (999 Miglia 2017 and Race Around Denmark 2018). I'm currently using Zipp 303 Disc with 177D hubs from 2016 and it seems ...
4
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1answer
55 views

Need help identifying Industry Nine part

I recently picked up a box-lot of Industry Nine parts, including the items pictured. They are 92mm wide, and of varying diameters. Could someone please tell me what they are, and what they are used ...
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2answers
208 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 ...
4
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3answers
662 views

How to remove a threaded bottom bracket?

How to take this thing off? I think this bike is from West Germany. What tool do I need and is there a screwing direction trick? Thanks! (I am taking this off to repaint)
2
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3answers
3k views

What tool do I need to remove this Joytech freehub?

I have tried 10mm allen: too small, spins freely, with very little grip. Hub brand: Joytech On the outer side it has 9 ball bearings. Video showing right/drive side: ...
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2answers
183 views

What can one damage by bending the wheel?

What parts may be damaged by bending rear wheel manually with very high force? My father bent rear wheel several times with such high force that the tire contacted the seat stays. Could he have ...
5
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1answer
188 views

Is it normal to have pins in the cup of “cup and cone”?

I got a shimano hub for my front wheel and rebuilt it last November, but didn't ride much until March. Now I hear a metal on metal grating noice when riding and my best guess is that it is comming ...
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1answer
535 views

Track cog threading or lockring threading?

On the website of a wheel manifacturer, I can find the following specs about the cog compatibility of their track wheels: Our track hubs are then compatible with threaded track cogs of Shimano 1....
1
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1answer
3k 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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1answer
101 views

Campagnolo Large Flange Pista (track) hubs

I haven't any direct experience with vintage Campagnolo large flange pista/track hubs. Can anyone tell me if there are issues with mounting a 70-80s era 5-6 speed road freewheel and using them just ...
1
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1answer
838 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 ...
4
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4answers
225 views

Uneven friction in front hub after rebuild

I serviced my old mountain bike after 6 years of use. This included replacing balls and regreasing the hubs of the bike. When I tightened the lock nut on the front axle and checked for wobbling the ...
5
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1answer
455 views

Winter grease for extreme cold temperatures

I'm using a fat bike rear hub (Sun Ringle). It malfunctioned twice in less than a month riding everyday in winter ❄️. It stopped turning at all so I had it serviced but then it stopped again when it ...
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3answers
2k views

Shimano 11 speed road shifters with 10 speed hub?

is it possible to use Shimano 11 speed road shifter with 10 speed hub/cassette? if yes, how? I have a set of Shimano Hydraulic 11 speed shifters but I don't want to upgrade hub to 11 speed. Is it ...
2
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1answer
686 views

Proper lateral rear hub position (with spacers)

What is the proper position for a rear hub along the axle? So far my understanding is 'somewhere' slightly toward the non-drive side to leave room for the sprockets - and I understand that the rim is ...
4
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1answer
494 views

Can a hub casing be warped/bent?

For a couple weeks now, my commuter bike has been creaking ominously while I pedal, and just the other day, the rear wheel began to wobble up to a full centimeter to either side (rubbing the frame) ...
5
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1answer
222 views

Has SRAM discontinued i-light hub dynamo?

I haven't been able to find SRAM hub dynamos lately. Has SRAM discontinued making of hub dynamos?
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1answer
597 views

DT swiss 370 hub ends in a thread, what is is for?

I bought a second hand wheel which has a DT Swiss 370 hub. I miss-thought the hub is for a 135x9 mm axle, but it is not. After finding out that it was not a 9 mm I took a deeper look to the hub and ...
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2answers
162 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
812 views

Giant ATX 2 2017 axle size?

I have a Giant ATX 2 27.5 2017 and I broke my rear axle 😭. I sent it to my LBS, a week later they told me their axle fitted the front wheel but the back wheel was a different size. They haven’t got ...
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0answers
250 views

How to reassemble Trek 820 rear wheel? [duplicate]

In the process of replacing my gear cassette on my Trek 820 bike I took apart my rear wheel hub and bearings and I have no clue how the parts are supposed to go back together.
2
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1answer
204 views

What 70's/80's freewheel threading is most common in central or eastern Europe?

Just interested to know? For example, if an 80's steel frame road bike in Europe came with Suzue high flanged hubs (94mm spacing front and 126mm rear), what type of freewheel threading would be ...
2
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1answer
833 views

Grease for hub bearings? (NLGI grade)

I know this question has been asked many times on here and other bike forums. I'm struggling to find a proper answer. The NLGI basically refers to the thickness of a grease. I have some lithium ...
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2answers
303 views

Failing hub bearings on a beater bike (freewheel) — time to replace the bike?

I run an old Raleigh Michigan that only does about 12 miles per week and lives outside a station mostly exposed to the elements. While replacing the rear derailleur cable yesterday (it had almost ...
1
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1answer
82 views

Is it worth swapping two front-wheel hubs?

I have an old Bontrager Select rim with cartridge bearings and a newer Syncros Race 27 with loose ball bearings. Both are 20 spoke, would it be worth it to swap the hubs? Or would it even be possible?...
1
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1answer
665 views

Remove Maillard freewheel

I'm trying to open the freewheel from an old bike that I have, but I can't find how. I even searched for tutorials on the Internet but I can't find one that looks like mine (please see picture). And ...
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2answers
67 views

Gears and chains [duplicate]

How do I know if I can put up a 10speed casette on my 2x8 setup (so can hub support it or do I need a new hub?). Also can I put a single speed chain on this setup above? I can't seem to find colored ...
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2answers
365 views

Specialized tri-spoke rear wheel free hub replacement?

I'm looking to replace the free hub on my Specialized tri-spoke rear wheel. Can't seem to find a model number,and would love to put an 11-speed free hub. Hope for some help?
3
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1answer
605 views

Boost 148 and 110 standard specification

Where can I find exact specification for boost 148 and 110 axle specification. I was able to find many documents describing main features of it, but I would like to read document with all exact ...
1
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2answers
547 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 ...
3
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1answer
876 views

Hope pro 4 rear hub wear

When I removed the Shimano 5800 cassette from the Hope 4 Pro hub I noticed that there is a significant axial play of the freehub body. Also I am able to slightly twist the driveside spacer from side ...
6
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4answers
15k views

Labour cost in building a wheel

What is the labour cost or time involved in building a wheel. I want to use a different hub with an existing wheel
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3answers
119 views

Recommended transmission for a commuting bike

I want to get a new transmission group for my bike and I'm quite confused, so I'd really apreciate some help from the community. Here's some context: I own, since last October, a Giant Escape 2 (...
3
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2answers
760 views

Freehub body wiggles

This is a OEM wheel from a 2014 Salsa El Mariachi Single Speed, called a "Salsa 2, Singlespeed" hub, which I believe is made by Formula. The freehub body "wiggles" (the thing that my fingers are ...