Unanswered Questions
76 questions with no upvoted or accepted answers
9
votes
1
answer
953
views
Shimano Dura-Ace R9120 lever leaking
My bike's Dura-Ace R9120 rear-brake/front derailleur shifter (left shifter in UK) leaks brake fluid when I pull hard on the lever. It leaks from this specific place:
I understand this lever is ...
CommunityBot
- 1
6
votes
0
answers
485
views
Shimano road bike lever leaking mineral oil
I have a leak in my Shimano DA 9170 (right) shifter. When I do a bleed, everything seems to work for a ride or two and then I start to lose braking power and the underside of the brake hood is wet ...
CommunityBot
- 1
6
votes
1
answer
193
views
The bike derailer will automatically drop to the lowest gear in the rear whenever my cadence slows
I have a REI Coop CTY 2.2 bicycle. Whenever I am biking and my cadence slows down, the bicycle derailer automatically (I am not shifting) to the lowest gear on the rear derailer. Any suggestions on ...
- 47
5
votes
0
answers
166
views
Can't find derailleur hanger for an old Nakamura
I tried local parts shops and tried the internet and still can't find the right hanger, And I no longer have the old broken one.
I can't even find the bike on the internet, The only photo I found was ...
- 51
4
votes
0
answers
309
views
Sram AXS derailleur does not shift
Have you encountered a problem where a rear AXS derailleur stops shifting? Any suggestions?
I bought a mint 2023 GX AXS derailleur on Marketplace, it worked for the first short test ride on a road but ...
- 141
3
votes
0
answers
70
views
How to properly adjust front derailleur height when it can sway significantly once the clamp bolt is loosened up?
I'm trying to adjust derailleurs myself, for the first time .)
the model is DEORE XT
following the how-to
https://www.wikihow.com/Adjust-a-Shimano-Front-Derailleur
the very first step - adjusting its ...
3
votes
0
answers
148
views
Help identifying brand of road bike frame
Last year I bought this second-hand bike, but I was a total newbie and didn't realize that the branding was just stickers until I received it.
It's still a good bike and I'm having fun with it, but I'...
- 131
3
votes
0
answers
116
views
What could the source of this ticking sound be?
I have an annoying ticking sound that I need some help with. I've read through a lot of suggestions online and two bike shops have failed to solve it.
The bike is a brand new custom build (Trek Emonda ...
- 6,437
3
votes
0
answers
86
views
Just hoping someone out there recognizes this bike and can help identify it
Assuming this is a 90s era aluminum frame with only a head badge sticker to identify it, no name or model printed anywhere. RX100 RD, DeoreXT FD, Sugino triple crank and Exage500EX brakes. the fork is ...
- 31
2
votes
0
answers
40
views
Surface scratch on carbon steerer
Following my previous post, I managed to find an identical new fork replacement from a reseller since the communication with the company was absolutely terrible...
When I unpacked the fork though, I ...
- 153
2
votes
1
answer
159
views
pedals only move bike at highest gear
Recently my bike will only move if I’m in the highest gear. I can pedal at lower gears but it will not move my bike forward at any reasonable speed and when I get up to even a very low speed the ...
CommunityBot
- 1
2
votes
0
answers
76
views
Identify this Bianchi - possibly 80s
Can someone please help me identify this Bianchi model?
My uncle has had it in storage for since years – I believe it's from the 80's.
Here are some photos, to help identify the model.
Cheers,
Alex
- 21
2
votes
0
answers
105
views
Identifying this road bike brand
Can someone help me identify this frame? It was given to me in Switzerland. My uncle and cousin bought it already painted grey. I noticed an engraved logo in the dropout, but it does not look like it ...
- 4,159
2
votes
0
answers
125
views
Gear up lever will not move
I just got a new bike and unfortunately fell off it on the first ride, now the lever to change gear for my derailleur Mezzu Microshift is stuck in the position it would be if you had upped a gear ...
- 128k
2
votes
0
answers
118
views
Pirelli tires (mixing 700X23c and 70025c)
A bike shop (whom I trust) replaced my tires with new 700X25c Pirelli P Zero Zello 4S front and rear, the rear tire did not clear the fork/frame for some reason, they switched the rear 700X25c with ...
- 21
2
votes
0
answers
302
views
Why is my bar tape wearing out quicker on one side?
My bar tape has been wearing out on the left where my palm meets the bar with I ride on the hoods, but not on the right. I've noticed the same thing on the gloves I usually wear.
Is this cause by how ...
- 41
2
votes
0
answers
417
views
Using 11-36t 9 speed derailleur with 11-40t 9 speed cassette
So I've got the shimano altus rd-m2000 and it says that it only supports 11-36t. However, I've seen people on forums say that it's possible with this derailleur. Even it I was wondering if with a ...
- 21
2
votes
0
answers
1k
views
Grinding noise from headset
I have a 5 year old Merida Ride 100, which has done about 5000km. It mostly has been in dry conditions, but has seen some wet conditions once in a while. After the last ride, I noticed some grinding ...
- 59
2
votes
0
answers
84
views
What's the type of polymer material used in friction bushings in Sram rear derailleurs clutches?
The friction bushing of an (older) Sram rear derailleur clutch is shown below. What type of polymer material are these made out of? I'm also interested to know what friction materials are used in the ...
- 151
2
votes
0
answers
216
views
What type of frame could this be?
Recently purchased this 1x11 rebuild. Decals have been removed and it has a fresh powder coat. The stripes are coloured electrical tape so don't go by that... I've heard it could be a Miyata or ...
2
votes
1
answer
98
views
Old bike: replaced rear axle but the tire goes off the axis when I get on it
I just broke and then replaced my rear axle on an old timey race bike I bought online.
Everything seems to go smoothly when the bike is up on a stand or on at my side, but once I get on it and try to ...
- 47
2
votes
1
answer
408
views
Is this a real Concorde or just a replica?
I'm confused with this, the lugs in this bike look identical with another Concorde but the tubing sticker clearly says "Reynolds". (Concorde only uses Colombus, right?)
1
vote
0
answers
63
views
Searching for vintage piece
I'm trying to repair my vintage gazelle impala bike and I'm missing just one piece :( Does anyone know where I can find the piece seen in the photo? It's part of the brake cable anchor bolt.
Thank you!...
- 11
1
vote
0
answers
60
views
Shifter only clicks in one direction
My bike shifters on both the front and rear derailleurs suddenly stopped wanting to shift down. They both shift up no problem and the cable looks fine but when I try to shift down on either of them ...
- 11
1
vote
0
answers
38
views
Compatibility Shimano rear derailleur RD-6300
I have this Shimano 600ax. Due to my stupidness I broke the body of the rear derailleur endings its life. There are other rear derailleurs (RD-6300) on ebay for example but these are very expensive ...
- 5,202
1
vote
0
answers
573
views
Shimano 105 r7000 front derailleur hard and clunky shifting, shifter harder to shift
A total newbie to DIY bike repair here, and my Shimano 105 r7000 FD is shifting really harshly after a wash. Washed it with dish soap plus water solution, however I did not give the FD any specific ...
- 4,536
1
vote
0
answers
176
views
Golfer’s elbow (Inner elbow pain) from drop bars?
I’ve been cycling for 3-4 years on a flat bars without any pain in My joints . recently I switched to drop bars, My arms are slightly bent when I ride so My bike fit is ok But I’m having an inner ...
- 31
1
vote
0
answers
66
views
I have a double walled bicycle wheel frame seam that has a gap underneath NOT on top? It does not go all the way round, only underneath. Is this fine?
I have a double walled bicycle wheel frame seam that has a gap underneath NOT on top? It does not go all the way round, only underneath. Is this fine?
The bicycle is a No Logo X-type racing alloy bike ...
1
vote
0
answers
131
views
Cable rubs on mountain bike derailleur
the hole were the cable goes through does not have a guide. The cable rubs against the aluminum housing. What is suppose to go in there?
- 831
1
vote
0
answers
135
views
Rear Derailleur Noises
When I pedal on my bike there is a loud noise that increases as I go into easier gears on the cassette and in the easiest gear I can see the chain catching on the derailleur jockey wheels, why is this?...
- 128k