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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5
votes
4answers
176 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 ...
0
votes
1answer
44 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 ...
0
votes
1answer
33 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 ...
0
votes
1answer
98 views

Front and Rear speed shifters aligment guide

How to align the front and rear speed shifters ? My chain dropped from the front chain ring, and I put it back on the first gear I found, then the rear one fall off, and I put the chain back on the ...
2
votes
2answers
64 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
12k 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 ...
0
votes
1answer
66 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 ...
1
vote
1answer
66 views

Shifting from Shimano 2300 to Tiagra

I have a road bike that I use mostly for touring (2-3 day trips) and my daily commute (~25km). It's loaded with the Shimano 2300 (2013) 3 X 10 groupset. I know it's not the most efficient or ...
24
votes
5answers
12k 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 ...
0
votes
1answer
69 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
48 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
1
vote
2answers
112 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 ...
0
votes
1answer
67 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 ...
2
votes
0answers
67 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 ...
3
votes
2answers
128 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 ...
2
votes
3answers
127 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 ...
1
vote
0answers
77 views

How do I repair a broken chain on my old BMX bike?

I have an old bmx and my chain broke yesterday. I bought a new chain from WalMart. It is 300 links for 1 speed but I don't know what is the bmx speed (gear); it was rusted but I fixed it up. I left ...
9
votes
5answers
8k 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 ...
0
votes
2answers
72 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
27k 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 ...
1
vote
2answers
187 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. ...
0
votes
2answers
189 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 ...
6
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
52 views

can I use 53-39T cahin rings with compact crank arm

I have shimano 105 5700 compact crank(50-34T). Can I use 53-39T chain rings with compact right arm.
0
votes
1answer
75 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 ...
1
vote
2answers
63 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 ...
3
votes
2answers
366 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 ...
0
votes
2answers
59 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 ...
7
votes
2answers
350 views

Tightening a nut too much

Often guidance will be given to tighten a nut to "20 ft lbs of pressure" (27 Nm) or something along those lines. What's the best way to ensure you tighten things up, but not to over-tighten? Is ...
8
votes
6answers
1k 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 ...
6
votes
6answers
10k 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 ...
2
votes
1answer
155 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 ...
4
votes
3answers
104 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
85 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 ...
3
votes
2answers
40 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 ...
2
votes
2answers
90 views

How can I protect cables in inclement weather?

I cycle year round, in Maine. It is pretty much guaranteed my brakes and shifter cables will need replacement in the spring, even if I try to maintain and clean the bike after each ride. Does anyone ...
4
votes
4answers
3k views

Where can I find replacement screws?

I have a handful of rusty screws on my bike; where can I find such small parts?
2
votes
2answers
368 views

Recessed brake pivot nut stuck in carbon fork

The recessed pivot nut for my front brake calliper (no. 4 in this diagram) has seized inside the fork. I've managed to remove the brake calliper itself by unscrewing it from the front, but the nut is ...
0
votes
0answers
47 views

Chain rubbing on rear derailleur cage after replacing crankset

I bought a new Shimano 3-ring crankset for my aged MTB (5-speed at the rear) and updated the BB to the recommended length (9.5mm longer than I previously had with 2-ring cranks)for the new cranks. Now ...
17
votes
9answers
2k views

Why are so many technical aspects of cycling so subjective? [closed]

I come from an Engineering background and I have a strong interest in science. It has always struck me as odd how so much of cycling is so very subjective. As an example, though this is by no means ...
1
vote
1answer
48 views

Have some new parts on hand but need new frame - frame swap reasonable? or sell and purchase new bike?

Purchased my first "decent" bike, a Motobecane 700HT about 5-6 years ago as a 'gateway drug' of sorts for myself to get into XC biking. Ended up using it for commuting for a few years as well. Over ...
1
vote
0answers
67 views

Bottom Bracket Compatability Question

Good afternoon all! In previous questions, I've mentioned that I intend to rebuild my 2000 Trek 7700 Multitrack. Well, I'm beginning by replacing the bottom bracket. According to the spec sheet I ...
1
vote
1answer
65 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 ...
6
votes
5answers
455 views

What is the necessary equipment on longer bike rides?

Let me provide some context to the question. I mostly cycle alone and cover distances in the range from 45 km to 65 km; depending on the route, these rides last from less than 2 hours to well over 4 ...
1
vote
2answers
60 views

Can't shift to small chainring

While riding yesterday I could shift into the big chainring, but to get back to the small chainring, I had to dismount and press on the chain with my hand (I'm not talented enough nor inclined to ...
6
votes
3answers
304 views

Is the durability of more expensive chains better than cheaper ones?

Do expensive chains last longer? I get 300-400 miles using Wally World's $10 8 speed chains while riding off road or dirt. I monitor and replace the chain at close to 1 percent stretch. Would a ...
14
votes
8answers
7k 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 ...
6
votes
2answers
183 views

What's in this patch kit?

I have a patch kit (from Bike Hand) and it includes: Rubber solution Metal rasp Patches Along with the aforementioned supplies there are two small rubber tubes, hollow, and about 1cm long. ...
1
vote
1answer
98 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 ...
0
votes
1answer
59 views

How to remove Race Face crankset?

I have a Race Face Ride XC single ring crankset that I stripped out the pedal threads on one arm. I am trying to remove the crankset, I have followed the instructions that came with the crankset, and ...