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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8
votes
4answers
186 views

Minimalist setup for a “travelling bike mechanic”?

I have very little living/working space of my own and so, in order to keep my personal bike in working order, I need to be able to transport "bike mechanic stuff" (e.g. tools, screws, cables, inner ...
1
vote
1answer
40 views

Servicing DT Swiss 240 FRONT hub

this is my first post here. How can I service a DT swiss 240 front hub, as in remove the adapter ( end cap ) to get to the insides? Do i need a special tool? Does it even need servicing? There is ...
1
vote
2answers
90 views

Bicycle crank is wobbly

My bicycle's crank is sorta wobbly - it tilts left or right, according to pressure applied to pedals. How do I fix it? What tools do I need? Video showing the wobble.
1
vote
2answers
4k views

My v-brake lever (just one) is stiff. What's wrong?

After tuning my brakes a lot (I was learning how) I noticed suddenly my back brake got really stiff. Does't really matter if the cable is loose or not, the lever itself feels really hard to pull when ...
11
votes
3answers
13k views

When should a wheel be replaced?

I an not talking about upgrading. How do you know when to buy new wheels because the other ones have worn out? How do you tell a wheel is worn out? I can always true a wheel back to true. And nothing ...
4
votes
4answers
88 views

Inner chainring bent on 6 week old MTB

I bought a new Voodoo Bizango 2015 6 weeks ago. When I was out earlier I changed down and the chain somehow got wedged between the 2 front chainrings (It's 2x10) and bent the inner ring. I've read on ...
0
votes
0answers
29 views

Maintenance After Riding a Road Bike in the Rain [duplicate]

I have a relatively new road bike but have never ridden it in the rain or anywhere wet. Let's say, it rains one day and gets my bike pretty wet, what steps do I need to take right after the ride to ...
14
votes
4answers
16k views

How do I know when to replace my bottom bracket?

With out completely removing the cranks and bottom bracket, how can I tell when it's time to replace my bottom bracket? The current symptom is a slightly 'rough' feeling when I pedal. It's not ...
3
votes
1answer
42 views

Do the cups of headsets with cartridge bearings wear out?

On my bike I have an FSA headset Orbit X-CX which has cartridge bearrings. I re-grease the headset a few times each year and have recently replaced the lower bearing after ca 13,000 miles. The upper ...
35
votes
8answers
15k views

How long should a road tyre hold its pressure?

How long should a road tyre be able to maintain a pressure of around 100psi, and what factors are likely to reduce this time? Background: My tyre pressures are consistently dropping to around 60psi ...
1
vote
2answers
66 views

Wobbly wheel/hub even when I tightened the cones

The wheel has a sideways wobble eminating from the hub. I tried adjusting the cones to the point its too tight but the wobble continues. Upon closer inspection there is play in the point where the ...
3
votes
1answer
39 views

Avoiding hydraulic brake system overfill when bleeding with worn pads

I have limited experience with bleeding Avid Elixir 5, Shimano SLX and cheaper Shimano and Tektro brakes. I usually time the bleed just before brake pad replacement, in order to avoid the risk of ...
2
votes
2answers
136 views

spinning handle bar grips - can it be dangerous

I did have spinning handle bar grips on my bike. I have now replaced them with some specialized lock on grips i.e. bolted on. For example if you're cycling on the road, could spinning grips upset ...
4
votes
1answer
150 views

When to replace FS bearings?

I know that when a fork stops working plushly, it should be serviced in order to escape permanent damage. When a chain is noisy, it should be oiled, and when it is worn - replaced - again to prevent ...
6
votes
5answers
16k 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 ...
2
votes
1answer
110 views

Can't find right headset adjustment

After a complete tear down and reassembly I can't seem to find the right tightness adjustment for my threadless fork / headset. If I loosen it to the point that the front fork turns freely, there's ...
1
vote
1answer
89 views

Is component's thread torque a factor in how 'stiff' a bike rides? Would a racer want higher torque?

Is higher pressure into the frame going to reduce vibration and hence improve stiffness?
2
votes
1answer
152 views

How to pump tire with cap that won't come off [closed]

I have a Schwinn bike from probably mid 2000's. The front tire has a regular valve cap that I can twist off and pump with a floor pump. The back tire has an oval cap that I cannot get off. And it ...
2
votes
1answer
35 views

Fork damper circuit reconditioning

I have a rockshox Dart II from 2007. I have recently rebuilt it for the first time in 9 years as it had basically locked up, and not so surprisingly given its neglectful treatment, its still not ...
14
votes
7answers
23k views

How to remove a crank arm with stripped threads?

A friend called me up yesterday after a mis-adventure during his attempt at a bottom bracket overhaul. He stripped out the threads on the (left) crank arm while using a Park crank puller. In a pinch, ...
0
votes
2answers
136 views

Planet Bike speedometer won't reset

I have a planet bike speedometer and after the winter season it seems that it is no longer functioning. It will come on when the bike starts to move but I cannot reset it and it seems to be frozen on ...
13
votes
5answers
1k views

How do you count the number of links in a chain?

I thought this was a simple question but apparently there is some confusion - and it's good to have a basic question to refer people to. How many "links" are in these short bits of chain: Image A ...
2
votes
1answer
94 views

Can 'Zefal All in 1' really doall of those: cleaning, degreasing and oiling?

Can someone tell me if 'Zefal' All in 1 Spray is good for: degreasing, oiling and cleaning? Link It seems suspicious because it covers 4 very distinct functions in a single spray; eg: Degreasing, ...
6
votes
1answer
84 views

How to assemble '70s-era center-pull brake

I've (supposedly) got a 1976 Motobecane Le Champion with what appears to be the original center-pull rim brakes, which unforunately are not in one piece and need to be re-assembled: As you can see ...
5
votes
3answers
268 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 ...
1
vote
1answer
54 views

Saddle Wash and take care and Maintenance

Can I wash saddle with soapy water? How can I take care of my saddle? My saddle is the GT MTB Saddle, which is made from synthetic materials.
7
votes
2answers
185 views

Why are ball socket allen wrenches

Anecdotally, I see a lot of bike mechanics on the Internet use ball socketed allen wrenches. Is there an objective reason to using them over the 'regular' hex allen wrenches? Are there particular ...
16
votes
9answers
9k views

Is there such a thing as frame failure?

Several general questions have been asked regarding how long a bike or bike frame will "last", and the gist of answers seems to be that a bike can last quite a while of the replaceable components are ...
5
votes
2answers
17k views

Which lubricant/grease to use for ball bearings?

A little mishap happened today during cleaning my bicycle. I tried to take off the sprocket wheel for easier access, but instead I opened the lock nut of the hub (cassette type) and the balls came ...
10
votes
3answers
2k views

What's the point of removing the excess oil after lubing the chain?

There is a very strong point in bike-mechanics culture, which I've seen in very competent answers here, too, to apply one drop of lube in every single roller of a clean chain, and then (!very ...
4
votes
2answers
155 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 ...
1
vote
3answers
97 views

If I am using DRY lube, do I need to clean my chain between applications?

Do I need to clean the chain before reapplying dry lube if I am only using dry lube?
2
votes
2answers
967 views

Which master links for 1/8 inch aka BMX chains?

It was very easy to find master links for 3/32inch (aka 9-speed chain) but I cannot find them for 1/8 inch (aka BMX chain). My chain is the Nexus CN-NX10. Cannot understand the odd observation that ...
1
vote
1answer
56 views

Are chainrings specific to double or triple cranksets?

I have a 2008 Specialized Allez with a triple crankset. The large and middle rings were getting worn so I bought replacements of identical tooth counts for them. However, after installing them I found ...
2
votes
4answers
1k views

How to fix a sluggish bike?

I just bought a used mountain bike, and it seems to be slow. Pedaling seems like very hard work, and at a normal casual pedaling rate, I can only reach 4-5mph. If I pedal like I'm being chased by a ...
1
vote
2answers
45 views

Searching model number of Shimano shifting lever

On my daughters bike, the cover of the revo shifting lever is broken. The specifications of the bike say the shifting lever is SL-RS35, but when I look at images in the net, these look completely ...
17
votes
6answers
36k 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 ...
2
votes
1answer
105 views

Front drum (was disc) brake only works when going backwards (!)

I am restoring my old bike that hasn't been used for quite a while. The rear brake works fine, however, the front brake has an issue: It only brakes when the bicycle is going backwards, not forwards! ...
16
votes
2answers
3k views

Preventing frozen brake cables

This response to another question provides a wealth of info on winter riding preparation, but doesn't mention any techniques for preventing cables, especially brake cables, from freezing. Is there a ...
2
votes
2answers
105 views

Dutch Bike Winter Cleaning

I am asking this question as I ride a dutch bike (chain guard, mud flaps etc) so my chain is not directly impacted by salt on the roads. However, seeing that there is a lot of water splashing with a ...
1
vote
3answers
18k views

I need help replacing my bike's tube

I recently popped the tube in my front tire and need help replacing it. I don't really know very much about bikes or the assortment of numbers on tubes, tires, and wheels. Here is what I do know: The ...
5
votes
7answers
6k views

What to use to clean a derailleur?

I'm not sure what type of solvent to use to clean a derailleur.
3
votes
4answers
161 views

Ease of servicing disc vs. rim brakes

How easy is it to keep a mechanical (non-hydraulic) disc brake system working at home with a set of "normal" (not bike-specific) tools, especially compared to rim brakes? Discs seem to be currently ...
0
votes
2answers
93 views

Options for fully lined bulk cable housing

I perform maintenance on 3 personal bikes, and often friend's bikes (a few per year, usually). One of the most common tasks is replacing shift/brake cables and housing. I live in Boston, winter is ...
2
votes
4answers
120 views

Ease of servicing brifters

How easy are "brifters" (e.g. Shimano Total Integration or Campagnolo ErgoPower) to maintain and adjust as a hobby cyclist at home?-- Although quite a lot of road bikes have them (including even light ...
5
votes
4answers
237 views

Are all vintage bikes difficult to work on?

I have had a couple of vintage bikes (from the '80s and earlier) and all have been absolute nightmares to work on: They always seem to have weird dimensions which aren't available anymore or in the ...
2
votes
3answers
5k views

Dahon handle post hinge loosens too quickly

I noticed that the handle post hinge on my Dahon Speed D7 now requires attention much more often than it used before. Unlike main frame hinge which remains tight for long after adjustment, this one ...
15
votes
1answer
678 views

How do I wrap a road bike handlebar?

What is the best way to wrap a handlebar? Specifically: Should I start near the stem or at the bar ends? wrap clockwise or counter-clockwise? How to wrap (e.g. how many times) around where the ...
0
votes
1answer
81 views

How to lubricate a bicycle cable [duplicate]

so I'm very new to all this, so I don't know a lot. My mountain bike will no longer shift gears, I've been told this is because my cables need lubricated, but I have no idea how to do this, so, how ...
5
votes
4answers
179 views

The shifter for the front derailleur is “soft” in my vintage bike

So I bought a used vintage bike. I just love the bike and it's awesome. However it came with one problem: gears problems. First of all I have very little experience with bike, especially gears ...