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

learn more… | top users | synonyms

14
votes
7answers
33k views

How often should I grease and repack my hubs and bottom bracket?

I am commuting 7 miles a day (round trip) in all weather in New England (temperate, moderately wet climate, cold winters). Overall I am putting about 1000 miles per year on my commuter bike, a 2009 ...
1
vote
1answer
15 views

Internal hub gear suddenly stopped shifting

I have never had an internal hub gear bike before, so I don't know much about them. My issue is that all of the gears stopped working suddenly when I was just riding the bike. The bike has 5 gears, ...
1
vote
3answers
37 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 ...
3
votes
1answer
102 views

Front Hub Wheel Falling off

I have a Generic 1000 watt front hub motor and the front wheel keeps coming loose. What should I do? I think I have heard of something called a torque arm. Will this help?
0
votes
1answer
37 views

Fixed hub threaded

I recently purchased a pre rad Bike, my friend who is a bike guy found it for me and said it was a good buy. Now when I learnt to skid I was fanging thru traffic non stop loving it, until that is the ...
3
votes
3answers
82 views

hub dynamo, maybe loose contact; maintanance?

I experience problems with my shimano hub dynamo. Few days ago, I stood in the dark, without any visible damage. Measurement prove that the dynamo does not deliver power. I measured DC and AC ...
31
votes
7answers
10k views

What's the efficiency of hub gears compared to derailleurs?

What's the efficiency of hub gears compared to derailleurs. I know that hub gears are not as efficient, a part from being heavier, how much will I loose in performance if I use hub gear?
12
votes
4answers
7k views

do DT Swiss 240 hubs need proprietary tools to maintain them?

the bearings in my DT Swiss 240 hub appear to be shot, I have the toolkit for and am used to maintaining Chris King hubs but I wonder if I have to get special proprietary tools for the DT hubs as ...
3
votes
1answer
91 views

Wheel building for n360 + disc brakes on H Plus Son 700c, 36h

I'm working on building a couple of wheels for a road/commuter bike. This is my first wheel building endeavor. I have: 2 H Plus Son 700c, 36 hole wheels A Nuvinci n360, 2012 model A set of TRP Hylex ...
5
votes
2answers
11k views

Special hub requirements for an 11-speed group

In a question earlier today (Changing cassette from 8 to 10 or 11 to meet the Shimano 105 5800 groupset) the Op asserts that they would need to change their hub, if they wanted to go from a 10- to 11- ...
0
votes
3answers
249 views

New bike hubs way over-tightened?

I have a limited budget, and I've never bought a new bicycle before. However, I just bought a 24" Giant XTC from a very bicycle-inept person who's kid had only used it a couple of months. Anyway, I ...
2
votes
1answer
71 views

What is this cogset body?

I have some backlash (free movement) in my body of cogset, so I try to dissemble my cogset to discover this weird body: I'm trying to find a new one but I don't know how to call it. Any idea how ...
3
votes
3answers
12k views

What tool is needed to remove a Shimano HG-50 freewheel?

What tool is needed to remove a Shimano HG-50 freewheel from the wheel hub? It looks like a 12mm or 13mm Allen key. Will this do it or is there some detail I have missed?
0
votes
1answer
66 views

Disc Rotor Alignment Mavic Crosstrail

I have a disc rotor alignment question you maybe can help me with. I have a Canyon Nerve AL+ 8.0 that's been working nice until the front wheel got stuck on the brake. First I thought it was a brake ...
3
votes
3answers
99 views

How to properly remove bearings from through-axle track hub

I am trying to learn the right way to remove bearings from a track hub. The bearings are cartridge bearings pressed into the hub. The axle has a ridge that prevents it from being removed while both ...
6
votes
6answers
11k views

7-speed MTB cassette on 8/9-speed wheel hub, where does spacer go?

Sheldon Brown says "Add a 4.5 mm spacer before installing a 7-speed cassette on an 8-, 9-, or 10-speed hub", but doesn't seem to show spacer placement in any picture. My direct experience is that the ...
1
vote
1answer
63 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, ...
2
votes
1answer
104 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 ...
5
votes
2answers
78 views

Dynamo hub cones regulation

I have bought my first dynamo hub wheel with Shimano DH-3N72 hub. The axle of the wheel fells like if it is over-tightened a bit, it rotates with feeling of clicks. Should I loose the cones in the ...
1
vote
1answer
95 views

1987 Schwinn Tempo Maillard hub rear axle

I have a 1987 Schwinn Tempo with 32h Maillard "Sealed mechanism" hubs. (I'm still confused about that phrase, maybe it's a bad translation? They're completely unsealed cup-cone hubs). The axle is ...
5
votes
3answers
389 views

How to minimize damage from pitted cones?

While working on a old 60's Raleigh I found that there is slight pitting on one of the cones on the front hub (rest of the hub is good). Ideally I would replace the damaged part and move one, but ...
5
votes
0answers
122 views

Flashpoint FP80 / SRAM S80 - rear hub specifications?

I'm looking for the specs of a SRAM S80 rear wheel hub. I dearly wish to replace its 9/10-speed freehub body with one that can accomodate Shimano 11-cog casettes. SRAM S80 was a 80mm-profile aero ...
0
votes
2answers
71 views

Alfine 8 crunching/grinding in highest gear

I have recently bought a bike with an Alfine 8 hub and it was working well for the first week or so. Then there was a couple of gear drop outs whilst I was riding so I made sure to line up the yellow ...
3
votes
2answers
73 views

What speed is my Shimano Nexus 8 Hub in?

I made a mistake when changing a flat. I didn't have it in 4th speed. When I was changing the flat I shifted it for more give on the shifter cable >_< . Now my shifter says 4 and I don't known what ...
0
votes
1answer
41 views

What is the spacing for trek 1.1?

I'm trying to find new wheels for my trek 1.1, and I can't find the spacing for the hubs. The wheels I'm looking at have a front spacing of 100mm, and a back spacing of 130mm. Will these fit on my ...
2
votes
2answers
2k views

Planning on building a fixed-gear/single-speed from an old Schwinn World. What new parts will I need?

I think I want a flip flop hub, to keep my options open. If I get one off amazon, do I need to buy a freewheel and fixed-gear cog as well, or will those come with the hub? Also, does the hub have to ...
2
votes
2answers
92 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 ...
3
votes
4answers
2k views

How do I know if my cone/cap/bearings need to be adjusted?

I have a custom road bike with (mostly) Shimano parts. I love to ride but I'm not so strong on the technical side. I have quick-release wheels; I regularly (3-4 times a year) put the bike in a bag ...
3
votes
3answers
163 views

Are carbon hubs a good idea?

I'm beginning to see manufactures making carbon hubs and am wondering if they have the potential to perform better than conventional metal hubs or if they are just a way to save a couple of grams of ...
6
votes
6answers
972 views

How to build a wheel

I'm in the planning stage of building a new bike. This will be a light road bike for city runs and transport. For racing I have other bikes. I'd like to build the bike from ground up by assembling ...
1
vote
3answers
267 views

Which spokes should I get for an Expresso Coaster Brake with a Velocity Deep V 700c

I'm working on my first coaster project with an old 700c frame which I want to make really clean using an Espresso Coaster Hub. http://www.espressowheels.com/griptape.html Rear black coaster brake ...
1
vote
3answers
152 views

Can I use an old cog for my new hub?

I have an old wheelset with a 16T cog. It's currently a 120mm flipflop hub, and I'm going to be replacing it with a 120mm coaster. The coaster hub that I want doesn't come with a 16T cog (only 14, 15 ...
2
votes
0answers
46 views

Can you identify this Sachs hub?

I recently picked this up along with a couple of old wheels. I don't know it's age or history. I've only got as far as identifying it as a Sachs. There are no other markings apart from the logo ...
4
votes
3answers
215 views

Will slightly loose bearings result in damage?

I just overhauled some cheap bmx hubs. I installed new bearings and cones. Now I'm trying to get the hubs adjusted so that the bearings will last as long as possible. I had always thought that ...
1
vote
1answer
104 views

SRAM Cassette on Campy Wheels

I wrecked my current wheel set in a crash and am considering purchasing a set of Campy Hyperons from a friend. AFAIK the wheels are stock and haven't been tweaked in any way. I would like to know if ...
1
vote
1answer
131 views

How can I tell where the damage is in the hub?

I am pretty new to bicycle maintenance. I've replaced brake cables, and patched tubes, but not much else. This week my plan was to clean up my back hub, because the wheel hadn't been turning as ...
2
votes
1answer
180 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 ...
4
votes
1answer
1k views

5 speed cassette on 8 speed hub

I just picked up a cheap wheelset to replace the wheels on a vintage bike. The old bike had a 5 speed freewheel (I think. The model printed on it is shimano-ug). The new rear hub is a shimano fh-rm30 ...
7
votes
4answers
689 views

Cause of spalled cones?

Was getting a sort of rubbing sound from my front wheel, like rubbing brakes, but the sound continued even with the bridal loose. So I disassembled my front hub. Everything looked good until I got ...
2
votes
2answers
271 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 ...
2
votes
1answer
97 views

Missing lock nut part

Not sure what to call it, but a couple of my wheels are missing the grippy washer thing that sits on the lock nut. They seem to be attached to the lock nut to begin with, but they just fall off after ...
1
vote
2answers
1k 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 ...
4
votes
1answer
152 views

Difference between grease

Is there a sensible difference between special bike grease (i.e. park tool grease) and grease used in vehicles? Is it worth (when speaking about cheap bikes) spending 10 times more money for special ...
3
votes
1answer
79 views

Do new hubs need to be adjusted prior to use

Do new hubs usually come adjusted, or one needs to adjust them prior to use. I have a new Shimano Claris hub, and it does not seem to be as smooth rolling as my previous Tiagra hub. Should I try to ...
1
vote
1answer
966 views

Hub rebuild - cone dust cap conflict, hub integrated vs pressed on cone?

I had to rebuilt the rear Joytech hub on my 2008(ish) Schwinn High Timber after I broke the axle: My hubs have a integrated dust cover which consists of a rubber diaphragm that is pressed into the ...
2
votes
3answers
2k views

What's wrong with my rear wheel? Wheel moves about 1/4" front to back when brake is fully applied, cassette seems a bit wobbly, some rubbing noise

I first started inspecting my wheel because I noticed when I applied my brake while not riding, I could push my rear end and the wheel would turn forward and back about 1/4"-1/2" each way (but the ...
1
vote
1answer
193 views

Repairing a damaged cone nut

So I've got a nice hybrid bike that I picked up secondhand, was doing some maintenance on it to get it up and running and thought I'd replace the bearings in the rear axle. In doing this, I've found ...
1
vote
0answers
169 views

Novatec D041SB and D142SBT Hub Quality [closed]

Anyone have idea, how is the quality of Novatec D041SB and D142SBT Hubs?
1
vote
1answer
102 views

Visual inspection of wheel hub

I need to build a new bicycle (others are gone, stolen :( ). Good thing is, I have two spare wheels of decent quality in my basement. These old wheels took quite a beating though, when I was younger. ...
3
votes
2answers
895 views

Maintence on Mavic 500 hub without Mavic 670 tool

I have a beloved but well used front wheel built around an old Mavic 500 hub whose bearings are finally starting to give up the ghost. If you hold the axle and spin the wheel you can feel it grind ...