Repairing your bike when something is broken. REPAIR is not the same as MAINTENANCE, a separate tag. Repair is what one does only when something is broken. Maintenance is what one does on a regular basis.

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142 views

Peculiar feel when pedaling

I ride an early 90s Scott Unitrack CST with the original Shimano Deore drivetrain it came with. Same as this one. When pedaling, the right pedal has a peculiar feel like a sudden inward jerk at a ...
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657 views

Bottom bracket mysteriously squeaking

Somewhere from the non-drive side of the drivetrain is coming loud squeak when I pedal hard. The story is long. First I threaded the BB-ES25 incorrectly, and had to spend half an hour with a file to ...
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125 views

Rear wheel wobbles

my rear wheel wobbles while it spins, like in this video. I read in the comments that it could simply be a badly mounted tire. What's your advice on this, what should I do?
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711 views

Is there any replacement for the chainrings of a Shimano STX crankset?

I have a Shimano STX Crankset (probably FC-MC series or similar, around 2001) with worn out chainrings (5 Arms). Is there any contemporary replacement opportunity for either the chainrings or the ...
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379 views

FC-M330 replacement

I have a Trek 4500 with a Shimano FC-M330 crankset. I need to replace the crankset and was hoping that someone could tell me the current replacement. I believe that I have narrowed it down to the ...
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450 views

Can I replace a 1/2 inch bolt with a 14mm one to secure my axle?

My front wheel is secured with 14mm bolts, while my rear wheel uses 1/2 inch bolts. Turns out my multitool has only a 14mm wrench, so I can't change the rear tire with it. Rather than carrying ...
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2answers
125 views

How can I find inexpensive salvage repair (frame) parts?

I've got a 2008 or 2009 Titus X. I cracked one of the struts (probably the wrong term) in the rear suspension triangle. I'm hoping I can find a salvage part (still waiting to see how expensive a new ...
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915 views

Shimano dual lever Ultegra ST-6600

The shifter cable broke on the way home from work. The break was inside of the dual lever assembly. I was able to fish out the cable end. But, with a new cable, I am not able to get the shifter to ...
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0answers
160 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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123 views

Mystery item broken on old Dawes. Help!

I was adjusting rear brakes last night and this little thing snapped in half (see image [right]). The linear indent holds my brake cable in place and a 5mm bolt holds this in place. I guess I need to ...
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0answers
227 views

Serial numbers on bottom of a pedal crank housing from a 50s era Schwinn?

Can someone please explain what these three numbers mean on the pedal crank housing? I believe this to be the pedal crank housing from a 1956 Spitfire Ladies Bike. The Schwinn Serial reads M0D502 ...
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5answers
1k views

How can I repair a swollen tire allowing visibility on the inner tube (picture provided)?

I have a new problem on my bike which occured after patching my inner tube. Since I put the patch on, my tire is pushed out away from the rim near the intake valve (not near the patch). In the picture ...
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4answers
744 views

Crank threads stripped - both pedals fell off

Something really strange happened to me - 2 years ago I bought a bike (Carrera Gryphon Hybrid from Halfords). I had just about 100 miles on that bike the month I bought it and than I locked it to a ...
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1answer
168 views

Caliper bolts after crash: repair or replace?

A few days ago, I was looking down checking out my crank while riding and drifted into the LA River Bike Path and ended up crashing bending my front brake caliper. Can the recessed bolt that holds ...
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1answer
775 views

pedal falling off axis

One of the pedal arms in my bike is loosening off the crank every so often. When it starts to happen, the pedal arm, that has square ends, and the nut will end up detaching from the crank, so I have ...
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652 views

Can't get the drive side bottom bracket cup out

I have an older Raleigh frame that I converted to a fixed gear and the bottom bracket cup on the drive side has been painted over a few times and I can't get it out. This is the type of cup (the one ...
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1answer
815 views

repair scratches on surly frame

I am a happy owner of a Surly Cross Check frame, two years old. Today I put it against a pole, but a strong wind blow made it slide along the pole and fall to the ground. As a result, there is one ...
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3answers
141 views

Trouble Removing bottom bracket. Is it my Tool?

I'm having trouble removing my bottom bracket. I'm using quite a bit of force as far as I can tell. But neither side is budging. The bike is a 2011, and I've never removed the bottom bracket, but ...
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2answers
102 views

How to fix gears on a Kilimanjaro bike

I've just bought a Kilimanjaro bicycle for cheap. One reason it was cheap, I expect, was the gears system. It's only partly functional, and I don't understand why. I would go to the bike shop with it, ...
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2answers
89 views

Shifting 1>2 does nothing, shifting 2>3 puts me into 2nd. What's wrong?

I'll be in first gear on my front derailleur, and shift up to 2nd. Nothing will happen at all. Then I'll shift up to 3rd, and I'll finally switch into second. 3rd gear is inaccessible. What could be ...
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2answers
106 views

Axle flex under load normal for freewheel hub?

When using a freewheel'd hub is it normal for the drive side of the axle to flex a little bit? I replaced the kickstand on my bike and the new one sits closer to the rear tire with about 2 mm ...
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3answers
2k views

Bike repair costs

I just started college and though it'd be nice to have a bike to get around and was looking at my mom's old road bike, but it definitely needs some work. It's a Fuji VALite 1769 frame with Suntour ...
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3answers
124 views

Why does my Rear bike tire slow down when Pedaling?

I just replaced a flat on my rear road-bike tire. I had also tried to replace the rear axle, By removing the axle completely, to a quick release lock but realized the axle that had been installed with ...
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3answers
244 views

Water inside bike frame

My latest "project" involves my bike, i.e. I want to perform a complete renovation of it. This involves changing rim, complete shift group, brakes, hubs, carrier etc, just keeping frame, seat post and ...
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1answer
159 views

Fixie chain stuck between cog and hub

I had my chain jump off on my fixed gear when I hit a pothole, and it's gotten completely wedged between the cog and the flange of the hub. I've removed the lockring but can't get a chain whip around ...
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2answers
333 views

Fixing broken STI shifters - plastic gear cable surround

As pictured, after knocking over the bike I've broken one of the plastic surrounds where the gear cable enters the front derailleur shifter. Shifting between the lower two chainrings still works, but ...
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431 views

Maintenance of Fork springs on Marzocchi Bomber Dirt Jumper

I recently took my fork into my mechanic for service because it was making a rattling noise in one of the fork legs. Upon initial assessment he thought it was a broken return spring for the air ...
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2answers
319 views

RS Revelation '11 dual air fork leaks

I have a RS Revelation dual air fork. It's new, never used before. I installed it and after a few days I noticed, that it loses air. Maybe 20-30 psi over night. So at morning it's just too soft and ...
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2answers
69 views

cable too short to reattach into a sturmey archer 3 speed shifter

I've just been given a Rayleigh Chiltern. The only problem is, the cable has unattached from the gear shifter. I Googled how to re thread, but the cable isn't long enough at the top end to slide right ...
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1answer
113 views

Is my six-year old touring bike worth repairing?

My touring bike (which I use for commuting) needs repairs which will cost £200... half the price of a new one. I am not mechanically-minded.... and I am too busy and too old to learn! A new bike ...
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1answer
135 views

guide to correctly assemble a Walmart bike [closed]

I bought a genesis max air from Walmart last fall used it a few times before the winter and two weeks ago brought it back out. For the last two weeks me and the wife have been riding about 8 miles ...
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2answers
61 views

Restoring a 16"

This here is my 16" bike which I'm going to at least try restore. I've put some wider bars on it, fixed loose things etc. My friend removed the pedal back but I don't think he has put it back ...
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51 views

replacing tires and tubes [duplicate]

I own a trek 7000 hybrid and was wondering if there are aftermarket parts i.e. inner tubes and tires that will work for it. the wheels, tubes and tires are all bontrager if this helps any suggestions? ...
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1answer
139 views

Possible Broken Shifter

My right Shimano shifter is now loose and clicking it doesn't do anything to the rear derailleur. I've checked the derailleur and it still works fine. How can I fix the shifter? Edit: It's a road ...
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1answer
554 views

Changing one of the chainrings on SR Suntour NEX crank?

I have a SR Suntour NEX (42x34x24) crankset and got my system really bad recently. But as I've used the second (34) chainring most of all I would like to replace only this one. Is it okay? Does my ...
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1answer
459 views

Slow lever return after shortening brake line and bleeding

I've just recently replaced the brakes on my MTB with a pair of Shimano XT hydraulics. The rear brake line was extremely long for my frame's routing, so I had to cut it and subsequently bleed the ...
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1answer
272 views

What exactly happened to my rear derailleur?

I had installed my front derailleur and was adjusting the high/low when I noticed my rear derailleur was hitting the spokes of my wheel. Suddenly, I saw a screw pop out and then my derailleur popped ...
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1answer
434 views

Clicking gears on new Electra Townie 8i

I asked a similar question related to slipping gears here: Slipping gears on new Electra Townie 8i but now I no longer get slipping, but clicking noise when the pedals are rotated either forward ...
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26 views

Best way to connect a wagon/ hitch

I welded a wagon for a bicycle. What is the best way to connect it so there will be free movement, but it will stay strong
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3answers
98 views

Chain falls to the outside of the chainring, but I can't reproduce the problem

I have a Dahon Speed P8 that I use for touring Japan, which has about 3000km on it. The bicycle has 8 gears on the back, and 1 gear on the front. Note: I love riding my bike, but honestly (and ...
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3answers
85 views

Cannot locate mysterious crunching/grinding noise

I've seen other posts on this general subject. My BB seems tight, new chain installed by bike shop, gears all checked ... I am second owner of this Raleigh so no knowledge of past usage or ...
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1answer
83 views

creaky sound when cranking [duplicate]

My bike seems to all of a sudden developed a creaking sound when I pedal. It appears to be there in every gear. Bu t I noticed it appears to only happen when I put pressure on the left pedal. What ...
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2answers
182 views

Rebound doesn't work on a Rock Shox Recon Air

On my Trek Fuel Ex6 I have a Rock Shox Recon Air fork with rebound valve. The valve has a 2,5mm allen key for adjustment, but it seems broken. The Trek Suspension Setup Guide tells me to set the ...
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0answers
67 views

Shimano Inter7 axle unit disassebly

I am trying to disassemble Shimano Inter7 SG-7C26 unit to clean and repair after a bearing retainer that is situated between parts 1 and 2 broke. I am having problems removing part 2. Does anyone know ...
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60 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 ...
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0answers
165 views

Where can I find a Shimano cs50 stopper fixing bolt?

Somehow I lost a single 'stopper fixing bolt' on my down tube cable stop. I have a set of Shimano sm-cs50 outer down tube cable stops, and I don't want to buy new ones because I only need one bolt. ...
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40 views

What sort of bike chain do I need for my bike? [duplicate]

Possible Duplicate: How can I tell which size chain my bike uses? I have a vintage Ross road bike, and the chain recently snapped during one of my rides. The bike has 2 gears in the front ...
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157 views

I'm worried about my derailleur snapping. The chain isn't running around the bottom pulley, it's running next to it

I'm worried about my derailleur snapping. The chain isn't running around the bottom pulley, it's running next to it, scraping against the bottom pulley and the frame. When I change gears it makes a ...
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2answers
153 views

How did this happen to my chainring?

So, this happened. All of this group of bolts but the one you see came out of my crankset: My question is.. how exactly do all those bolts wriggle themselves loose !? How do I determine what ...
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2answers
251 views

the derailer is touching chain and it won't let me go past 14 speed supposed to go 21 speeds

The derailer on my 21-speed bike looks like it's bent. It won't let the chain go onto the 3rd ring of the front derailer so, no I can't shift past the 14th speed. If I try it makes a loud sound, like ...