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

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26
votes
7answers
6k 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?
13
votes
6answers
19k 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 ...
10
votes
3answers
5k 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 ...
8
votes
4answers
5k views

Bottle dynamo vs. hub dynamo

I have SpinPOWER usb charger kit, and I am using a bottle dynamo with it. I have heard that the power output from a hub dynamo is higher than from a bottle dynamo. Does anyone have any information ...
7
votes
2answers
210 views

Why are hub shells such different diameters?

I'm curious: why are some hub shells much larger diameter than others? Is it an aesthetic consideration? Or are there cost/functionality tradeoffs? Take for example this Dura-Ace hub -- pretty ...
6
votes
3answers
8k views

How do I change my single-speed to a fixed gear?

I've been biking on single-speed for a few months and would like to play around with a fixed gear. I've heard of a flip-flop hub, but I'm not sure exactly what it is. And without any fellow bikers - ...
6
votes
4answers
2k views

Trouble getting the right cup and cone hub adjustment

I have a pair of Shimano XT wheels and recently had issues with the hub on the rear wheel requiring new cones and bearings. These were fitted carefully but I've had issues getting the right adjustment ...
5
votes
5answers
957 views

Fixed gear wheel hard to spin

My wheel feels harder to spin than usual. I just put new tires on, and at first I thought a tire must be rubbing, but that's not the case. Seems like the hub might just be gunked up inside, but I'm ...
5
votes
6answers
7k 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 ...
5
votes
3answers
1k views

Convert fixed gear to coaster bike

I want to convert my fixed gear 700c bike (raleigh rush hour) to coaster break bike. Can anyone recomend the best way to do this. Can anyone recomend a good coaster rear hub or coaster rear wheel?
5
votes
1answer
117 views

Can I replace a 9spd freehub with a 7spd one?

On my commute this morning I established that my freehub needs replacing. There's obviously something wrong with the ratchet mechanism, because it intermittently refuses to engage. My existing setup ...
5
votes
1answer
772 views

Any experience about radially-laced hub flanges actually breaking?

Most hub manufacturers forbid lacing spokes radially, mostly because there is less material in the radial direction away from a flange hole than in the standard 3-cross, tangential lacing. (UPDATE: ...
4
votes
7answers
3k views

Is there such thing as a freewheel that doesn't click?

The clicking sound of the freewheel on my singlespeed when it's coasting is annoying for me, so I flipped over my back wheel and rode fixed for a few months in blissful silence. But having to pedal ...
4
votes
2answers
409 views

Phil Wood Hubs: Anyone had a Pawl go?

I got front & rear Phil Wood hubs for a touring setup back in Oct of 2011. I'd been using them for commuting to work -- averaging 20 KM a day. Except I'd been off the bike for the month of ...
4
votes
2answers
162 views

How to prevent freehub body damage?

I feel like this is poor design. I have two wheelsets that are less than a year old which have damaged freehub bodys due to cogs digging in to the splines on the freehub. It's so bad that I can't ...
4
votes
2answers
1k views

I assambled rear wheel hub, but now rear wheel is not turning freely

I disassambled/assambled rear wheel hub, but now rear wheel is not turning freely, what have i done wrong?
4
votes
2answers
7k views

How to set up bike so that back-pedalling stops the rear wheel?

My first bike was a 1976 Raleigh Strika. It was brilliant and was distinguished by having only a front brake lever. To get the rear wheel to stop one simply back-pedalled. This was a v. efficient way ...
4
votes
1answer
195 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 ...
4
votes
1answer
240 views

Getting the hub logo facing the valve hole?

I have built a number of wheelsets and always struggle to get the hub logotype "upwards" and faces the valve hole in my rim, so that it aligns with the tire logo. Instead of getting it right the ...
4
votes
1answer
1k views

How do I remove the freewheel side of a flip flop hub?

I've got one of those flip flop hubs, and I need to remove the freewheel side and either service or replace it as it has started slipping really badly. What tools do I need?
4
votes
1answer
395 views

Should cassette “wiggle”

Recently My freehub broke and so I removed the cassette to replace the freehub and noticed, whilst off the bike, 4 of the remaining bolted together 8 sprockets wiggled (4 wiggled together but ...
4
votes
2answers
1k views

Sturmey Archer 3-Speed Hub Slipping?

I'm about to go look at a 1972 Raleigh. The seller says that the bike slips out of third gear into neutral. Is this a simple fix (e.g. a cable adjustment), or should I stay away from such a ...
4
votes
2answers
3k views

Can a Shimano Alfine 8 speed be reduced to 120mm hub spacing?

I would like to buy a single-speed bike that happens to have 120mm hub spacing, and add the Shimano Alfine 8-speed hub. That hub, however, seems to have a 135mm spacing. Can the 8-speed Alfine hub be ...
4
votes
1answer
153 views

Should I repack the hub bearings on new wheels with quality grease?

The wheels in question are inexpensive ($100/pair) alloy wheels. If the answer is "yes", do you have an recommendations for grease? Currently I'm using "Finish Line Grease with Teflon" for most of my ...
4
votes
2answers
158 views

What size cone wrench am I likely to need for a Trek 1.5 2011 Compact rear hub?

Unfortunately the manufacturer's website, and google don't appear to hold this information. The only thing I've found is that the hubs are aluminium which doesn't really help. Is there a common size ...
4
votes
1answer
766 views

Mountain bike axle diameters

Out of interest I would like to understand the benefits of having a 15mm or 20mm through axle over a 9mm QR (and a 10mm vs. a 12mm TA on the rear). What difference does it make to the ride?
4
votes
1answer
71 views

Hub grease, white grease, red grease or buy grease?

As i'm going to overhaul my hubs, i'm looking for the right grease for the job. The easy way would be going to a shop and buy some dedicated grease. But searching through my garage, I found that i ...
4
votes
1answer
177 views

Are all ready-made wheels sold “cassette compatible” only?

I will have to change my wheels on my old trusty late-80s Peugeot (PS28) soon. The rear wheel is mounted with a freewheel-type 6-speed hub (not cassette). I was wondering if all ready-made wheels ...
4
votes
1answer
87 views

Reoccurring Bent Axles, any reasons or upgrades?

Earlier this month I had a issue with a broken axle. It was the original that was sold with the bike and lasted around 5,000 miles. I went to my LBS and bought a new axle (unbranded, labeled, etc, ...
3
votes
6answers
771 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 ...
3
votes
1answer
2k views

How do I clean the inside of a freehub?

I didn't know any better and I let degreaser drip into the freewheel body of my Shimano FH-RM65. Now it makes a terrible retching noise when it rotates. How do I clean the inside of this thing? ...
3
votes
2answers
642 views

More freehub removal problems.

So helpful folks here helped me get the cog and lockring off, and now I'm stuck with this. I looked on Park's website again for "removal of freewheel" help, but mine didn't fit with any of the ...
3
votes
1answer
658 views

Why are axle cone nuts on the left side of a bike not reverse threaded?

I recently discovered that the adjustable sealed bearing cartridges on my rear hub failed prematurely because one of the "cones" (cartridge shoulder nuts) had somehow tightened itself, putting undue ...
3
votes
2answers
169 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 ...
3
votes
1answer
496 views

Lock nuts on new hubs seem strangely tight, but can't seem to loosen them. Any advice?

As part of a new build I'm working on, I just had some wheels built up. The hubs are large flanged Miche Primatos with a double-sided fixed wheel. The rear wheel, straight out the box, seemed weirdly ...
3
votes
2answers
118 views

How does this hub come apart?

Really, I have two questions. But first, I see no place to put a wrench on this hub. Well, there is one small notch on one side on the dust cap (on the other side). How do I get this hub apart? It's ...
3
votes
1answer
309 views

Can i use a 10 speed hubbed wheel on my 7 speed/cassette bike?

I ride a 2005 Claud Butler San Remo with a Sora 7 cassette on the back. My back wheel has broke and is not repairable and I have bought an Ambrosio WS23 Wheel (700mm) with Bianchi hubs which I believe ...
3
votes
2answers
5k views

How did my rear freewheel become incredibly tight overnight?

I got a flat yesterday morning after a normal ride, walked my bike inside the house and propped it upside-down (like this) overnight. This morning, I changed the flat and put on some brand new tires ...
3
votes
1answer
185 views

Do I require a washer/spacer/shim between a hub's cone nut and lock nut?

When replacing the cones for a front hub with new ones, is it okay to tighten the lock nut directly against the cone nut? Or must I use some kind of spacer / washer / shim in order for some other ...
3
votes
3answers
310 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 ...
3
votes
1answer
207 views

Am I going to do any damage by swapping cassettes frequently?

I've got a separate wheelset for cylocross riding and road riding. Would it be detrimental to the life of my cassette or hubs If I swapped the cassette between my road and off-road wheelset ...
3
votes
3answers
2k views

Can I lace my hub with all inward or outward facing spoke heads?

It seems conventional wisdom says to alternate inward vs outward spoke heads going around the flange when lacing a wheel, like this: However, I'm wondering what the reason for this is, and if it ...
3
votes
1answer
396 views

How to service a 1995 Schwinn Phantom Coaster Brake hub?

I have a 1995 Schwinn Phantom beach cruiser with a coaster brake that I'd like to service. The coaster brake is staring to feel sloppy and hasn't been looked at in a long time. What tools will I ...
3
votes
3answers
8k 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?
3
votes
1answer
537 views

Does Enduro make a ceramic hybrid wheel bearing kit for WTB Laser Disc Lite hubs?

I would like to replace the bearings in my front and rear WTB Laser Disc Lite hubs. I'm interested in upgrading the OEM steel bearings to a ceramic hybrid. I've hear that Enduro is a quality ...
3
votes
1answer
172 views

Lots of broken spokes on one bike, with different wheels

I have a commuting bike I've had for a few years, and as long as I've had it it's frequently broken spokes on the front wheel. Eventually I got sick of replacing them, put it down to a bad wheel, and ...
3
votes
1answer
166 views

Overhauled hubs: still some noise

I've just, for the first time, finished servicing the hubs on my bicycle. They are of the cup & cone type (Shimano). The cones of the front hub where pitted so I got them replaced, along with the ...
2
votes
2answers
123 views

Should I force an 130 mm hub into my old vintage alu frame

I have a classic vitus 979 aluminium road frame where the rear dropout width is 126 mm. Most of the things I hear is that you should not use force on an alu frame and try to fit in an 130 mm hub in ...
2
votes
2answers
2k views

practical pro and contra for Nuvinci CVT especially for hilly terrain

I'm thinking of buying new bike next year, most probably combo for exercise & commuting in summer. Since terrain is relatively hilly here and both fixed city-bike and casual combo with 3x7 gears ...
2
votes
1answer
448 views

How to grease a hub?

I have a question about hub, When should I grease my hub ? every 20000 km ? How do I know it needs new grease ? Because I can not see if the grease is dry or not...? Thanks