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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Campagnolo Ergopower inaccurate shifting on high and low cogs

I replaced the G-Spring and G-Spring carrier on my 9 speed Chorus Ergopower. Now it is shifting better and the clicks are sharper, but I can't adjust the derailleur to shift good on all gears good. ...
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2answers
138 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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3answers
374 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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2answers
114 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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3k 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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68 views

Bottom bracket feels rough, should I replace it

My bottom bracket feels rough when I turn it with my fingers. I don't notice any problems when it's all assembled, but it's definitely not smooth like the other parts of much bike like my pedal axles. ...
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3answers
382 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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1answer
219 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
509 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
597 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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237 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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599 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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364 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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1answer
16 views

Should an amateur attempt truing a wheel

I was in a bicycle crash recently, and noticed afterwards that the wheel was out of true (it hits the brakes once every revolution). The damage doesn't seem extreme to me though: it's not visible just ...
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2answers
133 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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137 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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519 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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1answer
342 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
1k 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
1k 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
366 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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2answers
139 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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1answer
522 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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0answers
5 views

How do I keep smallest gear on my crank shaft from contacting frame

I have an old Trek 8000 ZX that I am fixing up. I had to replace the bottom bracket and I believe I successfully did that. The bike did not have a crank set to work with so I salvaged one from a pile ...
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25 views

Servicing RS XC30: oil overfill

This is the first RS fork I am opening. It is a steel spring XC30 from around 2013. I followed the manual and am currently at page 15 point 11. On a side note, my damper circuit is TurnKey, but look ...
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42 views

Why are my quill pedal cages “wobbling”?

The plates and connectors on my old quill pedals "move around" in relation to the pedal axle itself: In the photo below, I'm pushing the pedals to opposite sides to show how the pedal cage "distorts". ...
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58 views

Rear Hub Axle Appears Bent – Causes and Repair Strategy

I had my rear wheel off of the bike noticed that as I spin the axle it appears to be bent – the freewheel end of axle, for lack of a better way to describe it, orbits the centerline of the axle. ...
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2answers
124 views

Tire pressure decrease when the bike is idle [duplicate]

I ride a Btwin MyBike 7s. Yesterday morning I noticed (for the first time since purchase) that in my rear tire, the tire pressure has decreased to a flat. I thought it was a puncture, so I refilled ...
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27 views

Best way to connect a wagon/ hitch [duplicate]

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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1answer
102 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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0answers
41 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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1answer
166 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
182 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
265 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 ...
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1answer
143 views

Handlebars are slipping and the stem is cutting into my bars. How do I fix this? New bars and stem or just a new stem?

I bought a 2014 kink curb and I think I may need to buy new bars because my stem is cutting into them. I don't know though. If anyone could please help me with this.
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2answers
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How bad is it **really** to bend aluminium rims? Requesting evidence based answers [closed]

Context: Bicycle wheels can become untrue if the rim is bent, e.g. from hitting a curb. The usual question: Can a bent aluminium rim be bent back straight? The two camps (figuratively): 1. Sure, go ...