Tools, parts, techniques, and procedures to keep your bike in working order. MAINTENANCE is not the same as REPAIR, a separate tag. Maintenance is what one does on a regular basis. Repair is what one does only when something is broken.

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3
votes
3answers
102 views

Center Lock to ISO Disc Adapters

We've got a bike where the front hub (Shimano Alfine dynamo) uses a Center Lock rotor and the rear hub (also Shimano, go figure) uses an ISO rotor. The front hub is giving me fits trying to sort out ...
0
votes
4answers
196 views

How much of a bruising can a MTB take?

I recently purchased my first MTB, a Rockrider 560, and I'm curious to know how much a roughing up can it take? For example, can I ride up and off kerbs without wrecking the tires? What about bunny ...
0
votes
1answer
99 views

flat tyre even after replacing the tube? [duplicate]

So I bought a used Specialized Sirrus 2011 model as my first bike (so I'm new here) recently and I love riding it, light weight, smooth handling and comfy to ride. Rear wheel was flat when I bought it ...
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 ...
9
votes
8answers
8k views

How to prevent my chain from breaking?

After my chain has broken what should I know about buying and maintaining a new chain (apart from lubing it and replacing when it 'stretches')? Do you keep a spare chain, or a spare link? I have a ...
19
votes
10answers
43k views

Homemade bicycle degreaser liquids

Does anyone have a recipe for a homemade bicycle degreaser solution? I'd like to make my own degreaser solution instead of buying one. I have read about using lemon juice and various types of alcohols ...
2
votes
1answer
168 views

How much runout is acceptable in a disc brake rotor?

I'm trying to sort out pad dragging / noises in Avid BB-7 mechanical disc brakes and I'm wondering how much runout in the rotor is acceptable? Right now I have about 0.05 mm (measured with a Park ...
5
votes
1answer
346 views

Rotating two chains on one cassette

I clean my chain on the bicycle, mostly because taking it off for a bath, drying, etc seems to take more time than I have. But maybe I could use 2 chains in rotation, I would take one chain off, ...
3
votes
1answer
73 views

Intermittent disc brake rubbing

My partner has a Kona Sutra with Avid BB-7 disc brakes. The front brake rubs intermittently on the rotor. I just went to see if I could figure out what the problem was and right now the disc runs true ...
5
votes
3answers
270 views

Storing commuter bicycle indoors during winter

I got myself a road bike that I intend to ride occasionally during winter (mostly for commuting). I live in an apartment, so storing the bicycle in a dry and cold place such as garage is not an ...
4
votes
1answer
121 views

Troubleshooting Noise from Avid BB-7 Road Disc Brakes

I'm trying to track down a dragging sound from some Avid BB-7 brakes on a Kona Sutra. The hub is a Shimano Alfine DH-S501 dynamo hub with an SM-RT82 Centerlock disc. The noise sounds like a dragging ...
9
votes
8answers
4k views

Can replacing my handlebar tape help reduce finger numbness?

Despite changing hand positions often and switching to more "cushiony" gel gloves, I'm still experiencing intermittent numbness when I ride (sometimes I get tingling and sometimes not). Are certain ...
13
votes
7answers
11k views

How do I bring an old bike up to speed?

I'm an adult that is new to biking due to a triple whammy of a childhood aversion to effort, my family moving to a town on the side of a mountain with steep roads, and my bike getting run over by a ...
5
votes
5answers
2k views

Are single-speed bikes better equipped to handle cog/chain wear?

I need to decide between a single-speed and multiple-speed bike. I usually ride multiple-speed mountain/city bikes in the highest gear anyway (around town). They're not intended for that, and doing ...
7
votes
2answers
114 views

When is it time to replace the gear-cable housing?

Please keep in mind that this question is specific to mountain bikes which roll through lots of dirt and mud. I heard stories of bikes that had their cable housing last for years, but I doubt that ...
5
votes
5answers
15k views

What should I use to lubricate a freehub?

I've noticed my freehub has gotten quite a bit louder over the last few months. Several people have recommended that I lubricate the freewheel by tipping the bike on its side and dripping lubricant ...
1
vote
1answer
113 views

Attempting to Rebuild a 2000 Trek 7700 Multitrack

I have/love my old Trek 7700 Multitrack, but it's fallen into some disrepair over the years including being in a flood (thanks Hurricane Sandy!) I've been told by my LBS that it's not worth ...
2
votes
2answers
104 views

Occassionally Dropping Chain On Downshifts

Very occasionally my chain will come of the small chainwheel on a downshift. It is not at all predictable, except that it always happens when the I'm doing an unloaded shift in preparation for a ...
1
vote
2answers
136 views

Hard to diagnose squeaking

I am in an ongoing battle to try to get a squeak to go away. Here is what I know (sorry for the length): 1) The sound is a very loud squeaking (chalk on the board) that, at its worst, persists ...
3
votes
3answers
9k views

Jammed Giant brand U-Lock. Unable to insert key

The other day I locked my bike to a fence and upon my return about an hour later, I found the lock jammed. I am unable to insert my key fully into the keyhole. My friend suspects that while locking ...
3
votes
3answers
3k views

Is my local bike shop asking to much money to change a rear cog?

I normally have much love for my LBS, but I've moved recently and am a little unsure about this new one due to the fees he is asking. I have a flip flop hub with a fixed gear (18 tooth) cog on one ...
6
votes
1answer
167 views

What is the name of this type of bolt for the front crank on my bike?

I recently had to take the front gear off of my bike and had some difficulty undoing the bolts. Because of their poor condition, I have decided to replace them. However, I have no idea what they are ...
15
votes
6answers
13k views

Real measurable benefit to ceramic bearings?

Is there a real difference between riding on ceramic bearings and riding on stainless steel? How would you measure it? Does it require it to be every bearing in the drive train, or will each set of ...
3
votes
2answers
210 views

Bottom Bracket Lube?

Lately, after my normal wash & lube routine, I've been squirting a little Teflon lube into the bottom bracket hub. I do so without dissembling by inserting the lube straw into the hub crevice. Is ...
26
votes
6answers
3k views

Why do the front and rear brakes work independently?

Why do bicycles have two individual brake levers that work independently to brake each wheel? I've always used my right brake lever because it is more comfortable to do so and I haven't noticed any ...
2
votes
2answers
279 views

back tire keeps going down

I have just bought a new bike and had it about a month now. I don't really know much about bikes but I do know how to repair an inner tube. I have had one puncture and just bought a new inner tube. ...
6
votes
4answers
288 views

Adjust handlebar position/height (damaged screw?)

I was trying to adjust the position of my handle bar...but might have turned the screw too hard in the wrong direction or perhaps it was like this earlier...not sure.... Is there anything that can be ...
1
vote
1answer
81 views

Will the 26“ tyre fit my 25” rim bike?

I have this 2002 Esperia which, and I need to change the tires cause I am getting back to it. The tire dimensions appear to be 25 x 1.90, 50-559. I read a bit about these new and old dimensions ...
1
vote
1answer
39 views

Tube adhering to tire

I was fixing a flat this morning and discovered that the tube was adhering to the tire casing. The tube pulled free from the tire, with about as much force as it would take to pull off well adhered ...
3
votes
2answers
122 views

Old freewheel removal

I have an old rear wheel - I think its from a Raleigh Arena roadbike from the late 70s or early 80s. There are broken spokes that require the sprockets removed to access. I've done this plenty of ...
12
votes
3answers
14k views

What are the benefits of external bottom brackets?

Pretty soon, I plan to replace the bottom bracket on my early 90's Sakae Litage road bike. It takes a standard, English-threaded bottom bracket. Right now I think it contains loose bearings--I was ...
1
vote
1answer
94 views

Rear wheel constant bump

my rear wheel has a constant bump whenever I ride . I've done all that came to mind at firs. Deflated and checked the tire , checked the axel for bends , checked the ball bearings , made shure the ...
25
votes
5answers
13k views

How do self-adjusting hydraulic disc brakes work?

I have Avid Elixir brakes on my mountain bike. They are the only part of the bike that's a total black box to me. I understand the principle behind disc brakes, and I understand the principle behind ...
2
votes
1answer
93 views

What is the purpose of greasing BB threads?

As is known for Shimano sealed bottom bracket cartages (e.g. page 16 here), if the BB cup is made out of metal, grease should be applied to the frame-cup thread. If the cup is plastic, grease should ...
1
vote
1answer
50 views

How to reinstall a tension screw of a V - brake that been fully unscrewed

I just bought a new showgun mountain bike and I was loosening the tension screw and it came completely out and I'm having a problem putting it back in
4
votes
2answers
160 views

Bicycle is harder to pedal when standing

From a few days now, when trying to pedal standing, my pedals become very rigid and it sounds like if the brakes are dragging. If I sit down again, the noise goes away and it's easy to pedal again. In ...
3
votes
3answers
255 views

Remove front derailleur without breaking chain

I recently purchased a Diadora Orbita bike from SportChek. As I was riding it my front derailleur got bent and now I can't use my pedals. So, my question is, can I remove the Shimano FD-TY18 front ...
9
votes
5answers
9k views

How to measure the correct belt drive tension?

I own a 2010 Trek District with a belt drive. I'm fairly happy with the setup, since after months of standing outside I just picked up the bike again and started riding without the usual chain ...
1
vote
2answers
88 views

Mechanism to draw rear wheel back and tighten chain stuck; oil not helping, what's next?

I have a bicycle with an internally geared hub (Rohloff). To tension the chain, I loosed the attachment of the rear wheel (dropouts), draw back the rear wheel, and tighten the attachment again. ...
5
votes
2answers
30k views

How do I measure a bottom bracket?

I need to replace the bottom bracket bearing on my fixie. I plan to get a Shimano UN26, but I note that there are a number of different sizes. The sizes seem to be expressed as 68-110, where 68 is the ...
0
votes
2answers
262 views

What size is the tiny ball bearing used in SRAM brake caliper quick release detents?

SRAM road brake calipers (mine are specifically Rival from 2011) have a quick release lever to facilitate wheel changes, as many calipers do. The SRAM QR lever has detents which make a little "click ...
7
votes
2answers
1k views

Cleaning Cable Housing?

I commute about 3600 miles a year and I am able to keep my gears adjusted pretty well. I do find that I get a lot of grime from rainy, muddy conditions, and I think I might be replacing my shift ...
2
votes
1answer
77 views

Is it the valve

I recently bought a new bike and the rear tire deflates quickly every time I inflate the tube. Now here's the thing: I inflate it fully and start to ride and the tire only deflates a bit. It seems as ...
3
votes
2answers
394 views

What kind of master link is most convenient for IGH / fixie / ss setups?

Here's a question related to this and this -- I've got a IGH bike and want to keep the drivetrain clean. I prefer to remove the chain for regular maintenance, but don't want to have to remove the ...
1
vote
2answers
73 views

Cyclocross tyre patching problems, bulging inwards

I bought a new cyclocross bike, very good very handsome. 2 days ago I rode it on quite a rough road composed only from rocks. Two punctures (slow leaking ones, cause only realised after coming home 2 ...
10
votes
6answers
2k views

How can I learn to take care of an old (70s era) road bike/get it back to working condition?

I found my mom's old road bike from the 70s tucked away in a corner of our attic. It's not in great condition and is pretty rusty. I don't know a lot about bikes from a mechanical or upkeep point of ...
2
votes
1answer
175 views

Refurbishing mountain bike - left standing for couple of years

I've a Marin Rocky Ridge (2007) that I'd like to give a bit of an overhaul/refurbish as it's been left standing for two years or so. I'm just looking to know where would be common areas that would ...
5
votes
3answers
301 views

How should the brakes on a child's bike be adjusted?

I picked up a child's bike from the recycling center - and I was going to give it to a financially strapped worker that I know. The brakes could easily be adjusted to be quite a bit stronger - but ...
0
votes
3answers
108 views

Chain skip happening seemingly at random with a new chain

My bike's a 24-gear trail/road hybrid, and I've had it for about three years (although I've been riding it much more lately than in previous years). For a long while, I've had an issue with chain ...
4
votes
2answers
60 views

Shimano Bottom Bracket LHS cup - splines all worn off. Removal tips?

In reference to one of these BB's: http://www.amazon.com/Shimano-UN54-Bottom-Bracket/dp/B0039369B4 My kid had successfully chamferred the left BB cup's splines, until there is no useable spline ...