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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89 views

How do I know I should replace the chain? [duplicate]

I have been riding a folding bike in the past. I have never replaced its chain. Recently, I have bought a second handed road bike for $500. I am afraid of the chain breaking suddenly. How do I know ...
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3answers
2k views

Burping v/s bleeding hydraulic disc brakes: is it safe?

I found a method for burping (get the air out of the circuit) hydraulic disc brakes in YouTube (see here). The method is: 1) Rotate/move the hand lever assembly until the reservoir cap is facing up ...
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177 views

Lock ring won't reattach on bottom bracket

I purchased a road bike and the lock ring wasn't attached, it just hangs loosely on this spindle: It doesn't seem to reattach by screwing it in like one would expect. I tried screwing it in either ...
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775 views

Could I have damaged the bearings/cone when replacing a tire? Front wheel wobbles side to side

Last evening I installed new tires on my bicycle. The front wheel now wobbles side to side. I notice a small movement about 1-2 mm near the hub/axle cone. I checked to see if the skewer is all the ...
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459 views

Joe Blow pump extra parts

anyone know where or how I can get a rubber insert for either presta or schrader head on my joe blow max floor pump? Just bought it and schrader head did NOT have an insert so it won't grab the valve. ...
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650 views

Boardman road bike bottom bracket

I recently purchased a boardman road bike and after 5 weeks as soon as you put effort into peddaling I am getting a squeaking noise from the bottom bracket, I took it back to halfords and they said it ...
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3answers
1k views

Exact dimensions for Wheelsmith Rim Rods?

Does anyone have access to the Wheelsmith Rim Rod ERD measurement tool? I need to reproduce this no longer manufactured tool. Specifically, I need the length of the yellow portion of each rod, the ...
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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
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1answer
87 views

Twist shifter cannot shift down – what might be the cause?

My son's bike is stuck on 7. When we try to shift down to 1, there are no clicks. It just shoots right back to 7. This is a dial/twist/grip shifter, not a trigger shifter. I do not think it has ...
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2answers
847 views

Can't shift front gear, despite loosening, tightening, etc. What could be wrong?

Disclaimer: I'm clueless and am piecing together what little information I know from reading this site and from watching YouTube 'intro to repair' videos. I've been gifted a used mountain bike, my ...
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2answers
167 views

BB Lockring won't completely tighten

I am trying to put the lockring back on my BB after adjusting it to reduce the play, but I am unable to full tighten it. I can hand tighten the lockring, but as soon as I try to use my hook spanner to ...
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3answers
299 views

How can I get a bike mechanic certification/where can I learn to be a bike mechanic?

I'm interested in becoming a bike mechanic in Melbourne, Victoria, Australia. I'm hoping there's an industry body which runs courses to certify bike mechanics. I'm really hoping it's not just ...
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3answers
2k views

How to measure chainring / cog wear?

Other than attempting to estimate whether a chainring or cog is worn and needs replaced by eyballing it, is there any way to measure the wear on chainrings or cassette cogs so you can determine ...
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281 views

Not working fork

I have watched several video tutorials about how to service a fork and decided to try to open and clean my Suntour Nex 4610 fork . I didn't do anything besides cleaning and lubricating the tube. I ...
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1answer
405 views

When do my brake pads need replacement?

I have a bike that is almost two years old. It still has the original brakes (side pull caliper brakes), which seem to still be functional. However, they are worn and I am going to be doing a lot of ...
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2answers
4k 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 ...
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4answers
2k views

Ultegra 9-speed brifter upshift problem - beyond WD-40?

I have a 2000 Ultegra 9-speed right/rear brifter that does not "release" the cable properly. My initial search on this problem suggested that this could often be cured by flushing with WD-40. So ...
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1answer
576 views

Santa Cruz Blur linkage maintence

How much maintenance and what is it specifically that needs attention on 2006 - 2010 Santa Cruz Bur VPP rear linkage mountain bikes? Im looking to buy a used Blur XC, but I hear they need a lot of ...
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3answers
1k views

Where to find bolts for an old Raleigh Bicycle?

The college kid in our family has a old/ancient Raleigh 3 speed bike with long fenders. Those fenders are held in place with a strange bolt that is threaded on both ends and has a head near one end. ...
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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 ...
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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 ...
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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 ...
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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 ...
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1answer
60 views

Why is part of this Derailleur loose? (Sun Tour Cyclone II)

As you can see from this picture, part of my Derailleur is loose. Notice how the gear is not in flush with the cylinder. It has a no other parts (that I can find!) than a threaded screw to go in ...
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78 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. ...
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188 views

Choosing New Rims/Hubs & Assessing Size

I have a 10 year old Trek 7300 FX hybrid which came with Matrix 750 double walled rims. "559 x 19" is marked on the sticker of these rims. The tyres fitted are 700 x 38C (622) - I'm assuming (should I ...
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202 views

if you replace the front gear system do you need to replace both the rear casette and the rear derailuer or neither

I've been given an old bike from the road which has gears where you can't tell what gear the lever is in (there is no number) just a lever in one of three positions or seven for the back). I am ...
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1answer
647 views

Can you take apart rear derailleurs, and how do you put them back together again?

I recently took apart my rear derailleur as it was on a 10 year old bike and really old and stiff. So I thought I would unscrew both jockey wheels and clean them, they had a silver bit either side, ...
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1answer
604 views

Rear V-brake pivots (cantilever studs) asymmetrical on Specialized Hardrock XC 2004 - how to fix?

This is a bit weird question. I bought a Specialized Hardrock XC used bike cheaply on e-bay. It had no front brake and the rear v-brake had different arms and was very dodgy. I thought I would able to ...
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1answer
232 views

Can I swap Semi-Metallic brake pads for Sintered Metal Brake Pads?

I'm running disc brakes on my cyclocross bike with semi-metallic brake pads. I find that I'm constantly having to keep my rotors cleaned off to ensure optimal performance. I'm used to my mountain ...
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2answers
414 views

Dahon D7HG Handlepost hinge loosens pivot point

I have a Dahon Vittese D7 HG, bought in Perú 1 year ago, my handlepost hinge begins to sound like crack , then I supposed that it could be because the friction between steel parts, and adjustment on ...
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2k views

Do my Shimano 7900 Dura Ace chainrings need replacing?

Basically today I had a bizarre suggestion; someone told me that my Dura Ace 7900 crankset (a 53 chainring) needs replacing because some teeth are worn from use. I ask myself, is that possible? I've ...
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794 views

Can I use 10-speed Shimano STI shifters with a 9-speed drivetrain?

I need to replace Shimano 105 STI shifters on a 9-speed road bike which was damaged in an accident, however there are few places that still stock 9-speed Shimano 105 STI shifters. Can I use the ...
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3answers
860 views

How often should I have maintenance for my bike?

I am a non-expert bike rider. I keep my bike in a closed storage during the winter and ride during the summer. Do I need to do some kind of maintenance at the beginning of each summer? Is it safe to ...
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1answer
353 views

Dismounting wheel in a fixie

I have a fixed gear bike, Rocky Mountain Boroughs Fixie (see picture). The chain is very tight compared to any free wheel bike. So anytime the tire gets punctured (unfortunately very often) and I want ...
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148 views

What book should I read to learn how to maintain a bike? [duplicate]

Possible Duplicate: Where to find good bicycle maintenance info? What book should someone that can fix a puncture but who have never replaced bearings etc read to learn how to maintain a ...
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0answers
76 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 ...
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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 ...
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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 ...
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0answers
66 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 ...
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1answer
151 views

converting stem shifters to brifters

I'm new. I'm 26, from the UK and until last year I'd never cycled more than 10 miles before. Then in September I cycled 2700 miles from Maine to Florida. It was great. I've just bought a Dawes ...
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2answers
186 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. ...
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0answers
24 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 ...
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1answer
62 views

Chain Replacement

I'm having a hard time finding an appropriate replacement chain for my bike. Its a 21 speed, Wal-mart brand mountain bike. My local bike store has chains that were up to a 10 speed. I know I need a ...
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0answers
191 views

Lowrider style bent forks techniques

Would a 24 inch bent fork fit on a 20 inch frame? Is there even a 24 inch fork? Would a 26 inch fit? Also if it doesn't fit in could I just add to the 20 inch - would you be able to extend it making ...
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2answers
301 views

Shimano Revo shifter does not shift [closed]

I have recently bought a new bicycle and the left Shimano Revo shifter (3 speed) is not shifting, what can I do?
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2answers
928 views

The quick release on my shimano sora brakes pops open during braking

Occasionally, when using my bike with shimano sora brakes on the front and rear, the quick release will pop open during braking, reducing my braking power. Is there some way to prevent this? Is it ...
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144 views

What is a reasonable maintenance routine for a commuter bike? [duplicate]

Possible Duplicate: How much maintenance? I've purchased a nice hybrid (a Trek Fx) and plan on using it as my daily commuter, maybe averaging 50 miles per week on it. What regular and ...
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1answer
115 views

How do I reassemble the rear gearing after fitting new tyres?

I have a Raleigh maybe 8 years old with shimano 15 gears. How do I reassemble the rear gearing after fitting new tyres? Everything seems to be in correct position but a small bolt with captive nut ...
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3answers
227 views

How long between spoke adjustments on a mountain bike?

I have a mountain bike that's now about 18 months old. At the 12 month mark I took it for its first annual service. Since then there's been a problem with the front wheel coming out of alignment. ...